Catheter with thin film pressure sensing distal tip

A mapping and ablation catheter has contact force sensing capabilities at a distal end. In one embodiment, the catheter includes a catheter body, a deflectable section, and a tip distal tip section which has a tip electrode with a thin-film pressure sensor that is adapted to detect a force vector applied to the tip electrode. The thin-film pressure sensor includes two opposing flexible and thin support members containing a pressure-sensitive material therebetween whose resistivity changes as a result of pressure and is detected by trace electrode intersections supported on interfacing surfaces of the flexible and thin support members. Used with a stop member having a conforming shape against which the thin-film pressure sensor abuts when a force vector is applied to the tip electrode, the pressure sensor can have a 2-D, radially-symmetrical shape, e.g., a disc or ring configuration, or a 3-D, radially-symmetrical shape, e.g., a conical configuration.

Coupling piezoelectric material generated stresses to devices formed in integrated circuits

A coupling structure for coupling piezoelectric material generated stresses to an actuated device of an integrated circuit includes a rigid stiffener structure formed around a piezoelectric (PE) material and the actuated device, the actuated device comprising a piezoresistive (PR) material that has an electrical resistance dependent upon an applied pressure thereto; and a soft buffer structure formed around the PE material and PR material, the buffer structure disposed between the PE and PR materials and the stiffener structure, wherein the stiffener structure clamps both the PE and PR materials to a substrate over which the PE and PR materials are formed, and wherein the soft buffer structure permits the PE material freedom to move relative to the PR material, thereby coupling stress generated by an applied voltage to the PE material to the PR material so as change the electrical resistance of the PR material.

CONTACTLESS POTENTIOMETER

A contactless potentiometer includes a shaft and a magnet rotatable together with the shaft and detects a rotational angle of the shaft corresponding to a change in magnetic fields caused by the rotation of the magnet, the magnet being held in a tip end portion of the shaft. The potentiometer includes a cover member attached to a housing at a tip end side of the shaft and arranged to define a closed sensor area between the cover member and the housing, and a circuit board mounted to the cover member at a side of the sensor area in a perpendicular or substantially perpendicular relationship with the shaft. The cover member includes a recess portion arranged on a surface of the cover member facing the circuit board, the recess portion cooperating with the circuit board to define a component-mounting spare space. 1. (canceled)2. A contactless potentiometer which includes a shaft and a magnet rotatable together with the shaft and detects a rotational angle of the shaft corresponding to a change in magnetic fields caused by the rotation of the magnet , the potentiometer comprising:a housing arranged to rotatably support the shaft through a bearing, the magnet being held in a tip end portion of the shaft;a cover member attached to the housing at a tip end side of the shaft and arranged to define a closed sensor area between the cover member and the housing, the tip end portion of the shaft extending into the sensor area; anda circuit board mounted to the cover member at a side of the sensor area in a perpendicular or substantially perpendicular relationship with the shaft, the circuit board including a sensor-area-side surface on which a magnetic angle-detecting sensor IC is mounted so as to face the magnet; whereinthe cover member includes a recess portion arranged on a surface of the cover member facing the circuit board, the recess portion cooperating with the circuit board to define a component-mounting spare space.3. The contactless potentiometer of claim 2 , wherein ...

FORCE DETECTION DEVICE

A force detection device includes: a substrate; and a force transmission block. The substrate includes: a mesa gauge arranged on a principal plane of the substrate and providing a bridge circuit; a connection region arranged on the principal plane; and a sealing portion surrounding all around the mesa gauge and connected to the force transmission block. The mesa gauge includes: a first mesa gauge extending in a first direction; and a second mesa gauge extending in a second direction and spaced apart from the first mesa gauge. The connection region electrically connects the one end of the first mesa gauge and the one end of the second mesa gauge. 1. A force detection device comprising:a substrate; anda force transmission block, wherein:the substrate includes:a mesa gauge arranged on a principal plane of the substrate and providing a bridge circuit;a connection region arranged on the principal plane and doped with an impurity; anda sealing portion arranged on the principal plane, surrounding all around the mesa gauge, and connected to the force transmission block;the mesa gauge includes:a first mesa gauge extending in a first direction; anda second mesa gauge extending in a second direction different from the first direction and spaced apart from the first mesa gauge; andthe connection region is disposed between one end of the first mesa gauge and one end of the second mesa gauge, and electrically connects the one end of the first mesa gauge and the one end of the second mesa gauge.2. The force detection device according to claim 1 , wherein:the substrate further includes a wiring arranged on the principal plane and doped with an impurity;the connection region includes a narrow portion narrowed between the one end of the first mesa gauge and the one end of the second mesa gauge; andthe wiring is connected to the narrow portion.3. The force detection device according to claim 1 , wherein:the first direction of the substrate is a direction in which an electric ...

FORCE SENSITIVE RESISTOR

A force sensitive resistor includes first and second electrical contacts, and a layer of deformable material impregnated with carbon nanotubes. The layer of deformable material is arranged between the first and second electrical contacts. A difference in the conductivity of the impregnated material caused by deformation of the material is detectable across the contacts. A method of manufacturing a force sensitive resistor includes the steps of providing first and second electrical contacts, and arranging a deformable material impregnated with carbon nanotubes between the first and second electrical contacts. Again, a difference in the conductivity of the impregnated material caused by deformation of the material is detectable across the contacts 1. A force sensitive resistor comprising:first and second electrical contacts; anda layer of deformable material impregnated with carbon nanotubes, the layer of deformable material arranged between the first and second electrical contacts wherein a difference in conductivity of the deformable material caused by deformation is detectable across the contacts.2. The force sensitive resistor according to claim 1 , wherein the deformable material is impregnated with carbon nanotubes at less than 10% of carbon nanotubes by weight claim 1 , preferably less than 5% claim 1 , more preferably less than 3%.3. The force sensitive resistor according to claim 1 , wherein the carbon nanotubes have an average outer diameter of less than 150 nm claim 1 , preferably less than 50 nm claim 1 , more preferably less than 15 nm.4. The force sensitive resistor according to claim 1 , wherein the carbon nanotubes have an average aspect ratio of more than 50 claim 1 , preferably more than 150 claim 1 , more preferably more than 1000.5. The force sensitive resistor according to claim 1 , wherein the carbon nanotubes are single-walled.6. The force sensitive resistor according to claim 1 , wherein the first and second electrical contacts and the layer of ...

Device and Method to Additively Fabricate Structures Containing Embedded Electronics or Sensors

A method of constructing an object includes depositing a first material in a predetermined arrangement to form a structure. The method further includes depositing a second material within the structure. The second material may have electrical properties and the method also includes providing electrical access to the second material to enable observation of the one or more electrical properties. 1. A method of constructing a object from a plurality of layers , comprising:depositing a first material in a predetermined arrangement to form a first layer, wherein the depositing results in at least one channel occurring within the first layer;depositing a second material within the at least one channel, the second material having one or more electrical properties;depositing the first material in a predetermined arrangement to form a second layer, wherein the second layer covers at least a portion of the first layer; and,providing electrical access to the second material to enable observation of the one or more electrical properties.2. The method of claim 1 , wherein the depositing a first material further includes using an additive manufacturing technique.3. The method of claim 1 , wherein the depositing a second material further includes using an additive manufacturing technique.4. The method of claim 1 , wherein the predetermined arrangement further includes a plurality of consecutive layers claim 1 , each of which is a cross-sectional profile of the sensor design.5. The method of claim 1 , wherein the second material includes a conductive elastomer claim 1 , and the one or more electrical properties includes piezoresistive properties.6. The method of claim 1 , wherein the second material includes a room temperature vulcanizing silicone suspension of electrically conductive particles.7. The method of claim 6 , wherein the electrically conductive particles include nickel-coated graphite particles.8. The object of claim 7 , wherein the material includes graphite particles ...

CONTROL DEVICE FOR AN ELECTRICAL CIRCUIT BUILT ON A SUBSTRATE OF POLYMERIC MATERIAL

The present invention concerns a control device for an electrical circuit integrated on a substrate made of polymeric material, incorporating carbonaceous conductive structures which define at least one track having improved electrical conductivity properties with respect to the substrate, which control device includes an operating area adapted to be acted on by a user and having a pressure-deformable structure adapted to disturb the electrical properties of the track by a piezo-resistive effect, wherein the conductive track includes at least one linear segment which has a winding progression at the operating area. 1. A control device for an electrical circuit integrated on a substrate made of polymeric material , incorporating carbonaceous conductive structures which define at least one track having improved electrical conductivity properties with respect to the substrate , which control device includes an operating area able to be acted on by a user and having a pressure-deformable structure adapted to disturb the electrical properties of said integrated track by a piezo-resistive effect ,wherein said integrated conductive track includes at least one linear segment which has a winding progression at said operating area.2. The control device as set forth in claim 1 ,wherein said integrated conductive track includes a thermally modified zone, where an electrical conductivity effect may occur, and which is arranged entirely on the same side with respect to the neutral plane of the operating area of the device, andwherein said integrated conductive track includes at least one linear segment having a winding progression at said operating area, and which includes for the most part sections of trajectory having a predominant component oriented in the plane of deformation of the operating area, which are subjected to a stressing differential such that said conductive structures experience deformation which causes a variation in electrical resistivity.3. The control device ...

CONTROL APPARATUS

The present invention relates to control (apparatus ). The control apparatus () comprises a mass of resilient conductive material () having an electrical property which changes in dependence on deformation of the conductive material. The control apparatus () further comprises at least three electrodes () in contact with the mass of resilient conductive material () at spaced apart locations to thereby define at least two electrical paths through the mass of resilient conductive material between different pairs of the electrodes. The control apparatus () is configured such that there is a change in a measurable electrical property between each of the at least two different pairs of electrodes in dependence on deformation of the mass of resilient conductive material. More than one of the at least three electrodes () move upon deformation of the mass of resilient conductive material (). 1. Control apparatus comprising:a mass of resilient conductive material having an electrical property which changes in dependence on deformation of the conductive material; andat least three electrodes in contact with the mass of resilient conductive material at spaced apart locations to thereby define at least two electrical paths through the mass of resilient conductive material between different pairs of the electrodes,the control apparatus being configured such that there is a change in a measurable electrical property between each of the at least two different pairs of electrodes in dependence on deformation of the mass of resilient conductive material, more than one of the at least three electrodes moving upon deformation of the mass of resilient conductive material.2. Control apparatus according to in which two different pairs of electrodes have an electrode in common claim 1 , the control apparatus being configured such that at least one electrode in each of at least two different pairs of electrodes moves relative to the other electrode in dependence on deformation of the mass ...

CAVITY WITH SILICON ON INSULATOR MEMS PRESSURE SENSING DEVICE WITH AN EXTENDED SHALLOW POLYGON CAVITY

An improved microelectromechanical system (MEMS) pressure sensing device has an extended shallow polygon cavity on a top side of a silicon supporting substrate. A buried silicon dioxide layer is formed between the top side of the supporting substrate and a bottom side of a device layer. Piezoresistors and bond pads are formed and located on a top side of the device layer and produce measureable voltage changes responsive to a fluid pressure applied to the device layer. The purpose of the extend shallow polygon cavity is to improve the sensitivity or increase the span while keep a low pressure nonlinearity during shrinking the die size of the MEMS pressure sensing device die with corner metal bond pads having a keep-out distance to prevent a wire bonder from breaking the thin diaphragm. 1. A cavity silicon on insulator (CSOI) microelectromechanical system (MEMS) pressure sensing device comprising:a non-rectangular and horizontally extended shallow polygon cavity located on and formed into a top side of a silicon supporting substrate, the non-rectangular and horizontally extended shallow polygon cavity that is formed into the top side of the silicon supporting substrate having a substantially planar bottom surface;a substantially planar, buried silicon dioxide layer having a top side and an opposing bottom side;a substantially planar device layer having a top side and an opposing bottom side, the bottom side of the substantially planar device layer being located above the top side of the substantially planar buried silicon dioxide layer, the device layer comprising a diaphragm, which is located above the non-rectangular and horizontally extended shallow polygonal cavity, the diaphragm having a shape substantially the same as the shape of the non-rectangular and horizontally extended shallow polygonal cavity and having dimensions which are substantially equal to dimensions of the non-rectangular and horizontally extended shallow polygonal cavity;wherein at least 4 bond ...

MULTI-STATE MEMORY RESISTOR DEVICE AND METHODS FOR MAKING THEREOF

In one aspect, the invention provides a method for making a multi-state memory resistor device. The method comprises providing a convertible component and inducing multiple state-dependent resistances on the convertible component to provide a multi-state memory resistor device. The convertible component is characterized by at least one of packing density, applied pressure, temperature, contact area or combinations thereof. The resistance from the multiple state-dependent resistances of the multi-state memory resistor device is a function of maximum current applied across the convertible component. In another aspect, the invention provides a multi-state memory resistor device comprising a convertible component, wherein the convertible component converts into a multi state memory resistor device having multiple state-dependent resistances when induced with a maximum current across the convertible component. 1. A method for making a multi-state memory resistor device , wherein the method comprises:providing a convertible component characterized by at least one of packing density, applied pressure, temperature, contact area or combinations thereof; andinducing multiple state-dependent resistances on the convertible component to provide a multi-state memory resistor device.2. The method of wherein a resistance from the multiple state-dependent resistances of the multi-state memory resistor device is a function of a variable state.3. The method of wherein the variable state is a maximum current applied across the convertible component.4. The method of wherein the inducing the multiple state-dependent resistances is by applying a threshold current corresponding to a voltage greater than a predefined voltage threshold value on the convertible component.5. The method of wherein the convertible component is at least one of: a plurality of metal filings claim 1 , at least two metal balls in contact with each other claim 1 , and a combination of a first metal and a second metal ...

Sensor elements on thin foil/films

A sensor device is disclosed comprising at least one deformable substrate, at least one transducer element formed in or on a surface area of a first side of the deformable substrate, at least one other transducer element formed in or on a surface area of a second side of the deformable substrate, and electrical conductors formed on and/or in the substrate for electrically connecting between and to the transducer elements.

RESISTANCE SUBSTRATE AND RHEOSTAT COMPRISING SAME

A resistance substrate contains a substrate and a resistance part that is formed on an upper surface of the substrate by printing. The resistance part is formed into an arc shape (a C shape) so that a width of the resistance part continually changes. The resistance part is formed so that a part having a narrow width becomes thick and a part having a narrow width becomes thin. 1. A resistance substrate comprising:a substrate; anda resistance part that is formed in an arc shape on the substrate,wherein a first part, and', 'a second part that is narrower in width than the first part,, 'the resistance part includes,'}the second part is thicker than the first part, anda width of the resistance part continuously changes between the first part and the second part.2. The resistance substrate according to claim 1 , whereinthe resistance part further includes a first end part and a second end part,the first part and the second part are positioned between the first end part and the second end part, andthe width of the resistance part continuously changes between the first end part and the second end part.3. The resistance substrate according to claim 2 , whereinthe first part is a widest part,the second part is a nearest part to the first part in narrowest parts, andthe width of the resistance part continuously increases from the second part to the first part.4. The resistance substrate according to claim 2 , further comprising a first land zone that is electrically connected to the resistance part.5. The resistance substrate according to claim 4 , whereinthe first land zone is electrically connected to the resistance part between the first end part and the first part.6. The resistance substrate according to claim 4 , wherein the first land zone is electrically connected to the first end part.7. The resistance substrate according to claim 4 , further comprising:an electrode part formed inside the resistance part, the electrode part an arc or annular shape, anda second land ...

PRESSURE SENSOR

A pressure sensor includes: a base including an outer surface partially or entirely composed of a curved surface; a plurality of electrodes disposed on the outer surface of the base with spaces therebetween and including at least one signal electrode and at least one ground electrode; and at least one variable resistor made from conductive foam elastomer material and configured to be elastically compressed upon application of pressure and such that electric resistance between the signal electrode and the ground electrode decreases as the amount of the compression increases. 1. A pressure sensor comprising:a base including an outer surface partially or entirely composed of a curved surface;a plurality of electrodes disposed on the outer surface of the base with spaces between the electrodes and including at least one signal electrode and at least one ground electrode; andat least one variable resistor made from a conductive foam elastomer material having electrical conductivity imparted by dispersing conductive filler in an elastomer material, the conductive foam elastomer material being obtained by foaming the elastomer material, whereinthe variable resistor is at least partially disposed along the curved surface of the base and is in contact with the signal electrode and the ground electrode, andthe variable resistor is configured to be elastically compressed when pressure is applied thereto such that an electric resistance between the signal electrode and the ground electrode decreases as an amount of the compression increases.2. The pressure sensor according to claim 1 , whereinthe pressure sensor includes a plurality of the variable resistors,at least one of the variable resistors has a sheet-like body obtained by molding the conductive foam elastomer material into a sheet-like shape, andthe variable resistors are disposed respectively in regions of the curved surface of the base.3. The pressure sensor according to claim 1 , wherein{'sup': '3', 'the variable ...

Electromechanical sensor, a method of producing such sensor and a wearable device including such sensor

An electromechanical sensor includes: an elastic carrier arranged to extend when subjected to an external mechanical load; a sensing sheath arranged at least partially around and along the elastic carrier; wherein the sensing sheath includes an electrically resistive element having a first electrical resistance operable to change upon a change of a dimension of the elastic carrier.

METHOD AND COMPOSITION FOR MOISTURE INGRESS PROTECTION, AND ELECTRONIC DEVICE COMPRISING SAME

A method includes coating at least one conductive element of an electronic device with an electrically non-conductive thixotropic liquid. An electronic device includes a first layer including an upper conductive element, a second layer including a lower conductive element, and a spacer positioned between the layers. The first layer, the second layer, and the spacer define a sensing chamber in which the upper and lower conductive elements move to vary the resistance of the electronic device. A non-conductive thixotropic liquid is present within the sensing chamber. Movement of the layers toward each other displaces the thixotropic liquid from an initial state coating at least one of the conductive elements to permit contact between the conductive elements, and movement of the first layer and the second layer away from each other returns the thixotropic liquid to the initial state. 1. A method for reducing moisture-based damage or interference within an electronic device , the method comprising:coating at least one conductive element of the electronic device with an electrically non-conductive thixotropic liquid.2. The method as recited in claim 1 , wherein the thixotropic liquid includes a thixotropic liquid exhibiting a viscosity ranging from about 140 cP to about 1800 cP at 40° C.3. The method as recited in claim 1 , wherein coating at least one conductive element of the electronic device includes coating the thixotropic liquid to exhibit a thickness ranging from about 10 nm to about 500 μm.4. The method as recited in claim 1 , wherein coating at least one conductive element of the electronic device includes coating the thixotropic liquid to exhibit a thickness ranging from about 100 nm to about 10 μm.5. The method as recited in claim 1 , wherein coating at least one conductive element of the electronic device includes coating only a single conductive element of the electronic device with thixotropic liquid.6. The method as recited in claim 1 , wherein coating at ...

TOUCH-TYPE VARIABLE RESISTOR STRUCTURE

A touch-type variable resistor structure includes a resistor-base plate, a conductive base plate and a separator member. The resistor-base plate further includes a main plate body and a resistance layer. The resistance layer extended along an extension direction is located on the main plate body. The conductive base plate located on the resistor-base plate includes an electricity-conductive layer facing the resistor-base plate. The separator member located between the resistor-base plate and the conductive base plate further has a central opening. One of the main plate body and the main conductive plate body is formed as a flexible-touch base plate. While the flexible-touch base plate is depressed, part of the electricity-conductive layer would pass through the central opening to electrically couple the resistance layer. 1. A touch-type variable resistor structure , comprising: a main plate body; and', 'two resistance layers, extended along an extension direction in a predetermined interval manner on the main plate body, the two resistance layers being formed as a first resistance layer and a second resistance layer, the first resistance layer having a positive end and a negative end, the second resistance layer also having its-own a positive end and a negative end, the positive end of the first resistance layer and the negative end of the second resistance layer being located at one side while the negative end of the first resistance layer and the positive end of the second resistance layer are located at another side;, 'a resistor-base plate, further including a main conductive plate body, having a coupling surface facing the two resistance layers of the resistor-base plate; and', 'an electricity-conductive layer, extended along the extension direction on the coupling surface, a coverage area of the electricity-conductive layer being to shadow the two resistance layers; and, 'a conductive base plate, located on the resistor-base plate, further includingat least ...

MICROELECTROMECHANICAL SCALABLE BULK-TYPE PIEZORESISTIVE FORCE/PRESSURE SENSOR

A microelectromechanical force/pressure sensor has: a sensor die, of semiconductor material, having a front surface and a bottom surface, extending in a horizontal plane, and made of a compact bulk region having a thickness along a vertical direction, transverse to the horizontal plane; piezoresistive elements, integrated in the bulk region of the sensor die, at the front surface thereof; and a cap die, coupled above the sensor die, covering the piezoresistive elements, having a respective front surface and bottom surface, opposite to each other along the vertical direction, the bottom surface facing the front surface of the sensor die. A conversion layer is arranged between the front surface of the sensor die and the bottom surface of the cap die, patterned to define a groove traversing its entire thickness along the vertical direction; the piezoresistive elements are arranged vertically in correspondence to the groove and the conversion layer is designed to convert a load applied to the front surface of the cap die and/or bottom surface of the sensor die along the vertical direction into a planar stress distribution at the groove, acting in the horizontal plane. 1. A microelectromechanical sensor , comprising:a sensor die of semiconductor material having a first surface and a second surface extending in a horizontal plane and having a thickness along a vertical direction transverse to the horizontal plane;a plurality of piezoresistive elements integrated in the sensor die at the first surface;a cap die coupled to the sensor die and covering the plurality of piezoresistive elements, the cap die having a first surface and a second surface opposite the first surface along the vertical direction, the second surface of the cap die facing the first surface of the sensor die; anda conversion layer arranged between the first surface of the sensor die and the second surface of the cap die, the conversion layer including a groove traversing an entire thickness of the ...

PRESSURE SENSOR

A pressure sensor includes a variable resistance portion, and a first electrode and a second electrode. The variable resistance portion includes a conductive foam elastomer material. When pressure is applied to the variable resistance portion, the variable resistance portion is compressed in accordance with the pressure. As the compression amount increases, the electric resistance of the variable resistance portion decreases. The first electrode and the second electrode are configured to contact with the variable resistance portion at a location having an interval of 0.5 mm or greater with each other, therefore being electrically connected via the variable resistance portion. 1. A pressure sensor , comprising:a variable resistance portion; andfirst electrode and second electrode, whereinthe variable resistance portion includes a conductive foam elastomer material,the conductive foam elastomer material is a material imparted with conductivity by dispersing carbon fibers in an elastomer material and obtained by foaming the elastomer material,the variable resistance portion is configured to be compressed under the pressure in accordance with the pressure applied to the variable resistance portion, and to have the electrical resistance to decrease as the compression amount increases,each of the first electrode and the second electrode includes a conductive material,each of the first electrode and the second electrode contact with the variable resistance portion to be electrically connected to each other via the variable resistance portion, andthe first electrode and the second electrode are configured to contact with the variable resistance portion at a location having an interval of 0.5 mm or greater with each other.2. The pressure sensor according to claim 1 , whereinthe elastomer material is a silicone rubber,each of the carbon fibers has a diameter of 0.01 μm or greater and 0.2 μm or smaller, a fiber length of 1 μm or greater and 500 μm or smaller, an aspect ratio ...

A sensor and a display and apparatus and methods for manufacturing them

Methods and apparatus for manufacturing a sensor are disclosed. In one arrangement, a method comprises forming first and second electrodes on a substrate. An electrically functional layer is applied to connect the first electrode to the second electrode. The applying of the electrically functional layer comprises at least a first step in which a composition comprising a carrier fluid and an electrically functional material is applied in a first pattern comprising a plurality of first sub-regions.

SYSTEMS AND METHODS FOR CONTACT LOCALIZATION THROUGH SPATIALLY OVERLAPPING SIGNALS

Achieving high spatial resolution in contact sensing for robotic manipulation often comes at the price of increased complexity in fabrication and integration. One traditional approach is to fabricate a large number of taxels, each delivering an individual, isolated response to a stimulus. In contrast, proposed sensor includes a continuous volume of soft material, e.g., a piezoresistive elastomer with a number of terminals embedded inside. Piezoresistive effects can be measured between all pairs of terminals in the set, and this rich signal set can contain the information needed to pinpoint contact location with high accuracy using regression algorithms. Submillimeter median accuracy can be demonstrated in locating contact on a 10 mm by 16 mm sensor using only four terminals (creating six unique pairs). In addition to extracting more information from fewer wires, this approach lends itself to simple fabrication methods and makes no assumptions about the underlying geometry, simplifying future integration on robot fingers. 1. A sensor for comprising:a volume of soft material; anda plurality of terminals embedded into the volume of soft material, forming one or more pairs of terminals;wherein the sensor is configured to detect a change in a signal for at least one pair of terminals in response to an indentation at a surface of the volume of soft material.2. The sensor of claim 1 , wherein the sensor is further configured to estimate a location of the indentation at the surface of the volume of soft material based on the signal change for the at least one pair of terminals.3. The sensor of claim 1 , wherein the volume of soft material is a piezoresistive material that comprises polydimethylsiloxane and carbon nanotubes.4. The sensor of claim 3 , wherein the percentage by weight of the concentration of carbon nanotubes and polydimethylsiloxane is between 0.2 and 5.5. The sensor of claim 3 , wherein the percentage by weight of the concentration of carbon nanotubes and ...

METHOD OF MANUFACTURE OF A STRAIN GAGE OR FLEXIBLE POLYIMIDE-BASED RESISTOR

A method of manufacture of a strain gage or flexible polyimide-based resistor, the method including the steps of providing a flexible polyimide substrate, joining a conductive foil to the flexible polyimide substrate, applying a layer of photoresist to the conductive foil and thereafter, patterning the conductive foil by etching using the photoresist, wherein the method is characterized in that it includes at least one of the following steps: surface conditioning of the flexible polyimide substrate using mechanical abrasion, scrubbing of the conductive foil prior to the patterning, removal of photoresist by scrubbing following the patterning, pressurized cleaning, using deionized water, following the patterning, automated algorithmic resistance calibration and shunt trimming and forming an emulsion layer of epoxy over the conductive foil following the patterning. 1. A method of manufacture of a strain gage or flexible polyimide-based resistor , the method comprising the steps of:providing a flexible polyimide substrate joined to a conductive foil;applying a layer of photoresist to the conductive foil; andthereafter, patterning the conductive foil by etching using said photoresist, surface conditioning of the flexible polyimide substrate using mechanical abrasion;', 'scrubbing of said conductive foil prior to said patterning;', 'removal of photoresist by scrubbing following said patterning;', 'pressurized cleaning, using deionized water, following said patterning;', 'automated algorithmic resistance calibration and shunt trimming; and', 'forming an emulsion layer of epoxy over said conductive foil following said patterning., 'said method being characterized in that it includes at least one of the following steps2. A method of manufacture according to and wherein said providing a flexible polyimide substrate joined to a conductive foil comprises attaching said conductive foil to said flexible polyimide substrate by using a resin.3. A method of manufacture according to ...

TUNABLE STARTER RESISTOR

A passive two-terminal circuit element may include a resistor including a carbon-metal composite resistive element. The resistive element is configured to maintain a resistivity that fluctuates less than one tenth of an ohm per ten degree temperature change up to 400 degrees Celsius. 1. A passive two-terminal circuit element comprising:a resistor including a carbon-metal composite resistive element configured to maintain a resistivity that fluctuates less than one tenth of an ohm per ten degree temperature change up to 400 degrees Celsius.2. The resistor of claim 1 , wherein the resistive element is approximately 75-85% carbon.3. The resistor of claim 1 , wherein the resistive element comprises carbon and copper particles claim 1 , the carbon particles extending along an axis parallel with a current flow through the resistive element.4. The resistor of claim 3 , wherein the copper particles extend perpendicular to the carbon.5. The resistor of claim 1 , wherein the resistive element is further configured to maintain a resistivity that fluctuates less than one hundredth of an ohm per ten degree temperature change up to 400 degrees Celsius.6. A starter circuit for a vehicle comprising:a battery;a starter motor;a solenoid switch electrically connected between the battery and the starter motor, the switch configured to close in response to an ignition signal; anda resistor including a carbon-metal composite resistive element arranged between the battery and the starter motor and configured to act on a current drawn from the battery in response to the solenoid switch closing.7. The circuit of claim 6 , wherein the resistive element is composed of carbon and copper.8. The circuit of claim 6 , wherein the resistor includes wire.9. The circuit of claim 6 , wherein the resistor has a length of approximately 0.5 inches and a diameter of approximately 0.25 inches.10. The circuit of claim 6 , wherein the resistive element is approximately 75-85% carbon.11. The circuit of claim ...

Sensors Comprising Palladium Complex Ink

A sensor including a sensing element comprising conductive features formed on a substrate; wherein the conductive features have been formed from a palladium complex ink composition that has been deposited onto the substrate to form the deposited features and wherein the deposited features have been heated to form the conductive features on the substrate. A method including disposing a palladium complex ink composition onto a substrate to form deposited features; and heating the deposited features to form conductive features on the substrate. A strain gauge sensor including a sensing element comprising conductive features formed on a substrate; wherein the conductive features conform to a two dimensional substrate surface; or wherein the conductive features conform to a three dimensional substrate surface. 1. A method for forming a strain gauge sensor comprising:disposing a palladium complex ink composition onto a substrate to form deposited features; andheating the deposited features to form conductive features on the substrate, wherein the deposited features form a strain gauge sensor.2. The method of claim 1 , wherein disposing the palladium complex ink composition comprises disposing a thin film of the ink claim 1 , wherein the thin film has a line thickness after heating of from about 50 nanometers to less than about 500 nanometers.3. The method of claim 1 , wherein the palladium complex ink composition comprises a palladium salt claim 1 , an organic amine that forms a palladium complex from the palladium salt claim 1 , and at least one solvent claim 1 , wherein the at least one solvent has a boiling point at about the decomposition temperature of the palladium complex.4. The method of claim 1 , wherein disposing the ink composition comprises a printing method selected from the group consisting of ink jet printing claim 1 , gravure claim 1 , and flexography.5. The method of claim 1 , wherein heating the deposited features comprises heating to a temperature of ...

PRE-LOADING A RESISTIVE TOUCH SENSOR DEVICE VIA LAMINATION OF DIFFERENTLY CURVED SURFACES

Systems and methods for generating a compressive pre-load in a resistive touch center through the lamination of differently curved surfaces. The system comprising a processor; and a memory that stores executable instructions that, when executed by the processor, facilitate performance of operations, comprising: determining a first curvature of a rigid back layer comprising a grouping of sensor electrodes; determining a second curvature of a flexible surface layer; and as a function of the first curvature and the second curvature facilitating lamination of the flexible surface layer to the rigid back layer. 1. A sensor device , comprising:an array of force sensors patterned on a stiff mid-frame; anda flexible display layer laminated over the array of force sensors, wherein the flexible display layer is configured to create a compressive force on the array of force sensors.2. The sensor device of claim 1 , wherein the array of force sensors comprises a force sensing membrane and an array of sensor electrodes.3. The sensor device of claim 2 , wherein the array of sensor electrodes are resistive force sensor electrodes.4. The sensor device of claim 2 , further comprising a force spreading layer interposed between the force sensing membrane and the flexible display layer.5. The sensor device of claim 2 , further comprising a force concentrating layer interposed between the force sensing membrane and the flexible display layer.6. The sensor device of claim 2 , wherein the flexible display layer comprises a flexible cover glass layer.7. The sensor device of claim 2 , wherein the flexible display layer comprises a flexible cover plastic layer.8. The sensor device of claim 2 , wherein the flexible display layer exerts a compressive pre-load to the array of sensor electrodes and the force sensing membrane.9. The sensor device of claim 2 , wherein the flexible display layer applies a tensile force to a border area of the sensor device.10. A device claim 2 , comprising:a ...

VARIABLE RESISTANCE AND MANUFACTURING METHOD THEREOF

Embodiments of the present disclosure disclose a variable resistance and a manufacturing method thereof, and the variable resistance is a variable resistance with continually adjustable resistance value. This variable resistance comprises: an elastic insulation envelope and conductive particles filled in the elastic insulation envelope. The manufacturing method of the variable resistance comprises: filling conductive particles into an elastic insulation envelope with an opening; and sealing the opening of the elastic insulation envelope. 1. A variable resistance comprising:an elastic insulation envelope; andconductive particles filled in the elastic insulation envelope.2. The variable resistance according to claim 1 , further comprising:first insulating particles mixed with the conductive particles in proportion, the first insulating particles and the conductive particles filled in the elastic insulation envelope together.3. The variable resistance according to claim 1 , whereinthe conductive particles are second insulating particles coated with conductor coatings.4. The variable resistance according to claim 1 , whereinthe elastic insulation envelope has a cylinder structure.5. The variable resistance according to claim 1 , further comprising:an insulating plug inserted partially into each end of the elastic insulation envelope; anda wiring post extending through the insulating plug, one end of each wiring post contacting the conductive particles filled in the elastic insulation envelope, and the other end of the wiring post extending beyond the insulating plug.6. The variable resistance according claim 5 , whereinthe insulating plug has a supporting section and a plugging section, a size of cross-section of the supporting section is greater than that of the plugging section, and the plugging section fits into the elastic insulation envelope.7. The variable resistance according to claim 2 , whereinboth the first insulating particles and the second insulating ...

PRE-LOADING A RESISTIVE TOUCH SENSOR DEVICE VIA LAMINATION OF DIFFERENTLY CURVED SURFACES

Systems and methods for generating a compressive pre-load in a resistive touch center through the lamination of differently curved surfaces. The system comprising a processor; and a memory that stores executable instructions that, when executed by the processor, facilitate performance of operations, comprising: determining a first curvature of a rigid back layer comprising a grouping of sensor electrodes; determining a second curvature of a flexible surface layer; and as a function of the first curvature and the second curvature facilitating lamination of the flexible surface layer to the rigid back layer. 1. A device , comprising:a processor; and determining a first curvature of a rigid back layer comprising a grouping of sensor electrodes;', 'determining a second curvature of a flexible surface layer; and', 'as a function of the first curvature and the second curvature facilitating lamination of the flexible surface layer to the rigid back layer., 'a memory that stores executable instructions that, when executed by the processor, facilitate performance of operations, comprising2. The device of claim 1 , wherein the rigid back layer is planar.3. The device of claim 1 , wherein the rigid back layer is concave.4. The device of claim 1 , wherein the rigid back layer is convex.5. The device of claim 1 , wherein the flexible surface layer is concave.6. The device of claim 1 , wherein the flexible surface layer is convex.7. The device of claim 1 , wherein the flexible surface layer exerts a pre-load force to the rigid back layer.8. The device of claim 1 , wherein the first curvature is determined as a function of a first radius of curvature of the rigid back layer and the second curvature is determined as a function of a second radius of curvature of the flexible surface layer.9. The device of claim 1 , wherein the operations further comprise in response to determining that the second curvature is less than the first curvature claim 1 , inducing a stress in the flexible ...

THIN FILM STRAIN GAUGE

A strain gauge includes: a substrate; a dielectric layer on the substrate; a thin film electrical circuit on the dielectric layer and having input/output terminals; other layers disposed on the electrical circuit; the dielectric layer forming a first seal on one side of the electrical circuit, the other layers forming a second seal on a second side of the electrical circuit, the first and second seals having structure such that: in a first instance prior to exposure of the strain gauge to an autoclave cycle, the electrical circuit is productive of a first output voltage in response to a first input voltage; and in a second instance subsequent to exposure of the strain gauge to at least 25 autoclave cycles, the electrical circuit is productive of a second output voltage in response to a second input voltage, the first and second input voltages being equal, and the first and second output voltages being equal. 1. An open-face strain gauge , comprising:a substrate;at least one dielectric layer disposed on top of the substrate;a thin film electrical circuit disposed on top of the at least one dielectric layer and having at least two input terminals and at least two output terminals;a plurality of layers disposed on top of the electrical circuit;the at least one dielectric layer forming a first moisture resistant seal on one side of the electrical circuit, the plurality of layers forming a second moisture resistant seal on a second side of the electrical circuit opposite the first side, the first and second moisture resistant seals having structure such that:in a first instance prior to exposure of the strain gauge to an autoclave cycle, the electrical circuit is productive of a first output voltage on the output terminals in response to a first input voltage on the input terminals; andin a second instance subsequent to exposure of the strain gauge to at least 25 autoclave cycles, the electrical circuit is productive of a second output voltage on the output terminals in ...

FORCE SENSING RESISTOR WITH EXTERNAL CONDUCTIVE LAYER

Embodiments of a force sensing resistor (FSR) are disclosed. The FSR has one or more external conductive layers, applied to at least part of the contact surface of the FSR, so that when a conductive probe presses the FSR, initial zero-force contact with the FSR can be detected immediately. The external conductive layer or layers may be rigid sheet metal, flexible sheet metal, metallic-coated polymer, conductive polymer, conductive elastomer, or other conductive material. A lead or trace may be electrically coupled to the external conductive layer or layers to allow for ease of coupling to a circuit or circuit board. 1. A force sensing resistor comprising an external conductive layer disposed upon a contact surface of the force sensing resistor.2. The force sensing resistor of claim 1 , where the external conductive layer is a sheet metal layer.3. The force sensing resistor of claim 1 , where the external conductive layer is a metal-coated polymer layer.4. The force sensing resistor of claim 1 , where the external conductive layer is a flexible conductive material.5. The force sensing resistor of claim 5 , where the flexible conductive material is a conductive polymer.6. The force sensing resistor of claim 5 , where the flexible conductive material is a conductive elastomer.7. The force sensing resistor of further comprising a second external conductive layer disposed upon the contact surface of the force sensing resistor claim 1 , where the second external conductive layer is electrically isolated from the external conductive layer.8. The force sensing resistor of where the external conductive layer and second external conductive layer are spirals coiled around a mutual center.9. A force sensing resistor comprising:a first electrode,a flexible conductive material,a second electrode,a first conductive lead,a second conductive lead,a nonconductive encapsulation, andan external conductive layer, where:the variable conductive elastomer layer is sandwiched between the ...

Modular potentiometer

A modular potentiometer includes a magnetic block slide unit including a slide and a magnetic block disposed on the slide; a magnetic field sensing unit parallel to the magnetic block slide unit and including at least one Hall device and a circuit board electrically connected to the at least one Hall device, wherein the circuit board is modularized so that portions thereof are connected in series; a signal processing unit electrically connected to the magnetic field sensing unit to receive a sensing signal from the magnetic field sensing unit and thereby calculate a distance traveled by the magnetic block. Hence, due to the aforesaid segmental design, the non-contact potentiometer is easy to manufacture, mount, demount, and carry, and its manufacturing cost is reduced by modularizaton.

Compositions of graphite and polyethylene

Rotary electronic components

민감도 제어가 가능한 자기 유변 탄성체 기반 스트레인 게이지와 이를 포함하는 감지장치

본 발명은 민감도 제어가 가능한 스트레인 게이지를 개시한다. 본 발명에 따른 스트레인 게이지는, 도전성 박막; 도전성 박막의 적어도 일면을 지지하는 것으로서, 탄성기재에 자성입자가 함유된 자기유변탄성체로 이루어진 지지부재를 포함한다. 본 발명에 따르면, 도전성 박막을 지지하는 지지부재에 자기유변탄성체를 사용하고 도전성 박막의 주변에 형성되는 자기장의 세기를 조절하여 지지부재의 강성을 조절함으로써 스트레인 게이지의 민감도를 다양하게 조절할 수 있다.

Bending sensor and fabrication method thereof

본 발명은, 가요성 기판(flexible substrate); 서로 이격된 위치에서 가요성 기판상에 제공되는 적어도 한 쌍의 전극 패턴; 및 도전성 입자들을 함유하고, 상기 전극 패턴이 형성된 상기 가요성 기판 상에 도포되는 페이스트 층(paste layer)을 포함하고, 상기 가요성 기판이 휘어지면, 상기 전극 패턴들 사이에서 상기 도전성 입자들의 밀도가 변화하여 상기 전극 패턴들 사이의 전기 저항이 변화됨으로써, 상기 가요성 기판, 궁극적으로는 가요성 디스플레이 소자나 상기 가요성 기판이 부착되는 대상물의 변형을 감지하는 굽힘 감지 센서를 개시한다. 상기와 같이 구성된 굽힘 감지 센서가 가요성 디스플레이 장치에 적용될 경우, 가요성 디스플레이 소자를 구성하게 될 가요성 기판상에 전극 패턴 및 페이스트 층을 형성할 수 있으므로, 실질적으로 가요성 디스플레이 소자의 두께 범위 이내에서 굽힘 감지 구조를 형성할 수 있게 된다. The present invention relates to a flexible substrate; At least one pair of electrode patterns provided on the flexible substrate at mutually spaced locations; And a paste layer containing conductive particles and coated on the flexible substrate on which the electrode pattern is formed, wherein when the flexible substrate is bent, the density of the conductive particles between the electrode patterns is And changes the electrical resistance between the electrode patterns to thereby detect the deformation of the flexible substrate, ultimately the object to which the flexible display element or the flexible substrate is attached. When the bending sensor configured as described above is applied to a flexible display device, the electrode pattern and the paste layer can be formed on the flexible substrate to constitute the flexible display device, so that the thickness of the flexible display device A bending sense structure can be formed.

旋转式电子元件

一种能无级调节输出值的中点位置复位型旋转 式电子元件，通过将小型旋转式可变电阻器[24]装在 支架[21]上，并在操作杆[30]与支架[21]之间装上受扭 螺旋弹簧[34]，使中点位置复位机构简化，实现小型 化和廉价化。

Electrically responsive composite material, a method of manufacture and a transducer produced using said material

公开了一种电响应复合材料，以及电响应复合材料的制造方法；一种具有底层以支持可流动液态聚合物的传感器以及传感器的制造方法。所生产的电响应复合材料可用于制造传感器。该方法包括步骤：接收可流动液态聚合物；引入针状电导体粒子(1501，1502)，使得通过量子隧道效应进行电流传导。加入尺寸与所述针状电导体粒子相关的电介质粒子(1505，1506)，使得多个所述电介质粒子被分散于毗邻的针状电导体粒子间。

Device for pressure measurement using a resistor strain gauge

A pressure measurement device and a method for making it are disclosed. A plurality of thick-film resistors are screen-printed onto a deformable substrate, after which they are preferably fired. The resistors are then connected to circuitry for measuring changes in their respective resistances due to deformation of the substrate by an external force or pressure to be measured.

Rotative electronic element

一种能无级调节输出值的中点位置复位型旋转式电子元件，包含：具有圆形穿通孔及制动部的支架；具有旋转轴、安装于支架端部使圆形穿通孔与旋转轴同心的旋转式可变电阻器；可旋转地嵌装于圆形穿通孔内、且一端与旋转轴连接、具有与支架的制动部配合来限定旋转角度的制动部的旋转操作轴。其特征在于，在支架与旋转操作轴间配设有缓冲机构，该电子元件具有小型、减小搭接声、价廉等优点。

Variable Resistor

본 발명은 필요에 따라 저항값을 변화시킬 수 있는 가변 저항 장치로서, 외부 회로에 각각 연결되는 한 쌍의 모 저항체, 및 상기 모 저항체들 사이에 착탈가능하게 설치되어 있는 둘 또는 그 이상의 가변 저항체들을 포함하는 구조로 구성되어 있어서, 가변 저항체들을 모 저항체로부터 탈리 및/또는 부착시키는 간단한 과정에 의해 다양하고 정확한 저항값을 설정할 수 있으며, 저항값을 용이하게 설정할 수 있어서 다양한 변수가 존재하는 안전성 시험을 단기간에 수행할 수 있는 효과가 있다. The present invention provides a variable resistance device that can change a resistance value as needed, and includes a pair of mother resistors connected to an external circuit, and two or more variable resistors detachably installed between the mother resistors. It is composed of a structure that includes, by a simple process of detaching and / or attaching the variable resistors from the parent resistor, it is possible to set a variety of accurate resistance value, it is possible to easily set the resistance value to test the safety test that there are a variety of variables There is an effect that can be performed in a short time.

Mechanical-electrical conversion element

PRESSURE SENSITIVE RESISTOR ELEMENT

Analytic device

FIELD: analytic devices such as sensors for detecting and measuring quantity of materials in fluid state. SUBSTANCE: sensor responding to chemical or biological material, particle, or radiation has polymeric composition body of first level of electric conductivity in quiescent state and can be transferred to second state of other level of electric conductivity due to variations in mechanical stress applied to body by means of extension or compression, or by means of electric field; it also has electrodes connected to mentioned body for connection to electric circuit responding to variations in mentioned body conductivity. Sensor has channel component for organizing channel therein to pass fluid medium under test. Mentioned body is permeable for mentioned fluid medium and stretches crosswise of channel so that fluid medium flows through mentioned body. The latter is made in the form of layer of granules which is supported within channel between two electrode-forming perforated lattices. Body can be made in the form of sheet incorporating foam or textile with granules of mentioned polymeric composition dispersed therein. EFFECT: ability of sensor to afford static and dynamic contact and of real-time system variation. 9 cl, 32 dwg ÐÎÑÑÈÉÑÊÀß ÔÅÄÅÐÀÖÈß (19) RU (11) 2 289 173 (13) C2 (51) ÌÏÊ H01C 7/02 (2006.01) ÔÅÄÅÐÀËÜÍÀß ÑËÓÆÁÀ ÏÎ ÈÍÒÅËËÅÊÒÓÀËÜÍÎÉ ÑÎÁÑÒÂÅÍÍÎÑÒÈ, ÏÀÒÅÍÒÀÌ È ÒÎÂÀÐÍÛÌ ÇÍÀÊÀÌ (12) ÎÏÈÑÀÍÈÅ ÈÇÎÁÐÅÒÅÍÈß Ê ÏÀÒÅÍÒÓ (21), (22) Çà âêà: 2004100234/09, 30.05.2002 (72) Àâòîð(û): ËÀÑÑÈ Äýâèä (GB), ÁËÎÐ Äýâèä (GB), ËÀÔËÈÍ Ïîë Äæîíàòàí (GB), ÕÀÍÄÇ Ôèëèï Äæåéìñ Óîëòîí (GB) (24) Äàòà íà÷àëà îòñ÷åòà ñðîêà äåéñòâè ïàòåíòà: 30.05.2002 (73) Ïàòåíòîîáëàäàòåëü(è): ÏÅÐÀÒÅÊ ËÒÄ (GB) (43) Äàòà ïóáëèêàöèè çà âêè: 10.06.2005 R U (30) Êîíâåíöèîííûé ïðèîðèòåò: 07.06.2001 GB 0113905.4 (45) Îïóáëèêîâàíî: 10.12.2006 Áþë. ¹ 34 2 2 8 9 1 7 3 (56) Ñïèñîê äîêóìåíòîâ, öèòèðîâàííûõ â îò÷åòå î ïîèñêå: WO 00/79546 A1, 28.12.2000. RU 2068587 C1, 27.10.1996. RU 2043670 C1, 10.09.1995. WO ...

Manufacturing method of silicon thin film piezoresistive element

Analytical device

Analytical device...

A sensor for chemical species or biological species or radiation presenting to test fluid a polymer composition comprises polymer and conductive filler metal, alloy or reduced metal oxide and having a first level of electrical conductance when quiescent and being convertible to a second level of conductance by change of stress applied by stretching or compression or electric field, in which the polymer composition is characterised by at least one of the features in the form of particles at least 90% w/w held on a 100 mesh sieve; and/or comprising a permeable body extending across a channel of fluid flow; and/or affording in-and-out diffusion of test fluid and/or mechanically coupled to a workpiece of polymer swellable by a constituent of test fluid.

Polymer composition

A polymer composition is elastically deformable from a quiescent state and comprises at least one electrically conductive filler dispersed within and encapsulated by a non-conductive elastomer, the nature and concentration of the filler being such that the electrical resistivity of the composition is variable in response to distorsion forces down to a value substantially equal to that of the conductor bridges of the filler, the composition further comprising a modifier which, on release of the distorsion forces, accelerates the elastic return of the composition to its quiescent state.

Patent FR2496380B1

Pressure sensitive resistor - with resistance formed by moulding conducting particles coated with elastic resin

Pressure sensitive resistor is produced by (a) forming a resistance by hot moulding conducting articles in the agglomerated state, the surfaces of the these particles being coated with an elastic resin and (b) fixing metallic electrodes to the resistance with an adhesive. Pref. the conducting particles are carbonaceous particles prepd. by carbonising and graphitising a thermosetting resin. The wt. ratio of conducting particles to elastic resin to 3/7 to 7/3. The metallic electrodes are mounted on the resistance with the aid of a pressure sensitive, conducting adhesive. Provides a stable pressure sensitive resistor with a weak hysteresis. Resistors can be produced with a wide range of resistances for a given mechanised strength.

Patent FR2056556A5

PIEZORESISTIVE DEVICE WITH ELECTRICAL CONTROL

L'INVENTION SE RAPPORTE A UN DISPOSITIF PIEZORESISTIF A COMMANDE ELECTRIQUE. SELON L'INVENTION, LE DISPOSITIF PIEZORESISTIF A COMMANDE ELECTRIQUE EST REALISE A L'AIDE D'UN ELEMENT PIEZORESISTIF 1 COUPLE A UN TRANSDUCTEUR ELECTROMECANIQUE 2 DONT LES BORNES 4 SONT LES BORNES D'ENTREE DU DISPOSITIF. CE DISPOSITIF COMPREND UN MOYEN DE COMPENSATION 3 DE LA DERIVE THERMIQUE. APPLICATION NOTAMMENT AUX DISPOSITIFS D'AFFICHAGE. THE INVENTION RELATES TO A PIEZORESISTIVE DEVICE WITH ELECTRICAL CONTROL. ACCORDING TO THE INVENTION, THE ELECTRICALLY CONTROLLED PIEZORESISTIVE DEVICE IS REALIZED BY A PIEZORESISTIVE ELEMENT 1 COUPLE TO AN ELECTROMECHANICAL TRANSDUCER 2 WHOSE TERMINALS 4 ARE THE INPUT TERMINALS OF THE DEVICE. THIS DEVICE INCLUDES A MEANS OF COMPENSATION 3 FOR THERMAL DRIFT. APPLICATION IN PARTICULAR TO DISPLAY DEVICES.

Patent FR2196514B1

ELECTRICALLY CONDUCTING ELASTOMERIC COMPOSITION, SENSITIVE TO PRESSURE

a. Composition élastomère conductrice d'électricité sensible à la pression. b. Composition caractérisée en ce que les particules conductrices d'électricité sont des particules de graphite articificiel, en forme de tubercules à bosses, dont les angles vifs sont arrondis. c. L'invention s'applique à la fabrication de commutateurs, de détecteurs, etc., et de tous dispositifs dans lesquels on veut utiliser une variation de pression ou détecter une pression. at. Electrically conductive pressure sensitive elastomeric composition. b. Composition characterized in that the electrically conductive particles are particles of articular graphite, in the form of tubercles with bumps, the sharp corners of which are rounded. vs. The invention applies to the manufacture of switches, detectors, etc., and all devices in which it is desired to use a pressure variation or to detect a pressure.

Piezo-resistant material

Elastic,cellular polymer material - esp compressible polyurethane sponge with permanent electrically conductive or magneti

The cellular polymer is preimpregnated with a pure aq. plastic dispersion prior to coating with the aq. dispersion containing the electrically conductive or magnetic particles. Pref. the cellular polymer is polyurethane and the plastic dispersion is an aq. acrylic resin dispersion.

PRESSURE TRANSDUCER AND METHOD FOR MANUFACTURING SUCH TRANSDUCER

A.TRANSDUCTEUR DE PRESSION PERFECTIONNE ET PROCEDE DE FABRICATION. B.DE MANIERE GENERALE, LE TRANSDUCTEUR EST REALISE A PARTIR DE PLAQUETTES 12, 14 ET 16 ET EST CONCU POUR APPORTER LES AVANTAGES DES TRANSDUCTEURS DE TYPE A POUTRELLE ET DE TYPE A DIAPHRAGME DIFFUSE TOUT EN REDUISANT OU ELIMINANT DE NOMBREUX INCONVENIENTS. LE PRODUIT EST CONCU DE FACON A PERMETTRE DE REALISER UN GRAND NOMBRE D'ENSEMBLES INDIVIDUELS SUR UN SEUL ENSEMBLE COMPOSE AVEC UNE REPRODUCTIVITE RELATIVEMENT ELEVEE ET POUR UN COUT RELATIVEMENT BAS. C.APPLICATION POUR JAUGE DE CONTRAINTE. A. PERFECTED PRESSURE TRANSDUCER AND MANUFACTURING PROCESS. B. GENERALLY, THE TRANSDUCER IS MADE FROM PLATES 12, 14 AND 16 AND IS DESIGNED TO PROVIDE THE ADVANTAGES OF BEAM TYPE AND DIFFUSED DIAPHRAGM TYPE TRANSDUCERS WHILE REDUCE OR ELIMINATE MANY DISADVANTAGES. THE PRODUCT IS DESIGNED TO ALLOW A LARGE NUMBER OF INDIVIDUAL SETS TO BE MADE ON A SINGLE COMPOUND SET WITH A RELATIVELY HIGH REPRODUCTIVITY AND AT A RELATIVELY LOW COST. C. APPLICATION FOR STRAIN GAUGE.

PIEZORESISTIVE GAUGE AND METHOD FOR MANUFACTURING THE SAME

L'INVENTION A POUR OBJET UNE JAUGE PIEZORESISTIVE ET SON PROCEDE DE FABRICATION. CETTE JAUGE COMPREND DEUX ELECTRODES 3 DISPOSEES SUR UN SUPPORT ISOLANT 1 ET UN ELEMENT PIEZORESISTIF 5 INTERCALE ENTRE LES ELECTRODES 3. L'ELEMENT 5 EST CONSTITUE PAR DES PARTICULES CONDUCTRICES PIEZORESISTIVES, PAR EXEMPLE EN GRAPHITE, NOYEES DANS UNE MATRICE ISOLANTE REALISEE, PAR EXEMPLE EN RESINE EPOXYDE OU EN RESINE POLYIMIDE. APPLICATION A LA MESURE DE PRESSIONS DE L'ORDRE DE 500BARS. THE SUBJECT OF THE INVENTION A PIEZORESISTIVE GAUGE AND ITS MANUFACTURING PROCESS. THIS GAUGE CONSISTS OF TWO ELECTRODES 3 ARRANGED ON AN INSULATING SUPPORT 1 AND A PIEZORESISTIVE ELEMENT 5 INTERCALED BETWEEN THE ELECTRODES 3. ELEMENT 5 IS CONSTITUTED BY PIEZORESISTIVE CONDUCTIVE PARTICLES, FOR EXAMPLE IN GRAPHITE, FLOODED IN AN INSULATED MATRIX, PARTICLE EPOXIDE RESIN OR POLYIMIDE RESIN. APPLICATION TO THE MEASUREMENT OF PRESSURES OF THE ORDER OF 500BARS.

PIEZORESISTIVE MATERIAL FOR USE IN THE PRODUCTION OF PIEZORESISTIVE PROBES AND METHOD FOR MANUFACTURING SUCH MATERIAL

Method and apparatus for measuring forces or pressures

Graphite fiber tactile sensor

A layer of carbon fiber materials sandwiched between two conductive layers provides a tactile feedback sensor which is particularly useful in manipulator systems for robotics and assembly automation.

CURRENT LIMITATION DEVICE

Regulator device for electric currents

Progressive rheostat

PRESSURE MEASURING DEVICE USING A RESISTOR EXTENSOMETER

DISPOSITIF MESUREUR DE PRESSION DU TYPE COMPRENANT UN SUBSTRAT DEFORMABLE SOUMIS A LA PRESSION A MESURER, SUR LEQUEL EST APPLIQUE UN EXTENSOMETRE A RESISTORS, ET UN CIRCUIT ELECTRIQUE EN MESURE DE RELEVER LES VARIATIONS DE RESISTANCE DES RESISTORS EN FONCTION DE LA DEFORMATION DU SUBSTRAT. L'EXTENSOMETRE EST FORME PAR DES RESISTORS A FILM EPAIS APPLIQUES PAR SERIGRAPHIE SUR LE SUBSTRAT. PRESSURE MEASURING DEVICE OF THE TYPE INCLUDING A DEFORMABLE SUBSTRATE SUBJECT TO THE PRESSURE TO BE MEASURED, ON WHICH A RESISTOR EXTENSOMETER IS APPLIED, AND AN ELECTRIC CIRCUIT CAPABLE OF READING THE VARIATIONS IN RESISTANCE OF THE RESISTORS AS A FUNCTION OF THE DEFORMATION OF THE SUBSTRATE. THE EXTENSOMETER IS SHAPED BY THICK FILM RESISTORS APPLIED BY SERIGRAPHY TO THE SUBSTRATE.

Regulator device for electric currents

Improvements to electrical resistances

Multidirectional input member and electrical device having same

A multidirectional input member according to the present invention includes a base plate on which a looped sensor that includes a plurality of groups of non-contacting electrodes configured in a loop is formed and an operation plate locating opposite to the base plate. The operation plate has a first loop-shaped protrusion that is located at a plane opposite to the base plate, that is protruded toward the base plate side, that is opposite to the looped sensor, and that is configured with a resistant rubber member. The first protrusion has a configuration in which its sectional area of a plane parallel to the base plate is tapered in the direction from the operation plate side toward the base plate side.

Agglomerating nano-particles

A method of agglomerating nanoparticles to form larger agglomerates is shown. The nanoparticles are mixed with a resin to form a first mixture 803 of agglomerates, having sizes over a range that includes agglomerates considered to be too large, suspended in the resin. A bead milling cylinder 802 produces a second mixture 808 with fewer large agglomerates. A filter removes the remaining large agglomerates. The resulting mill-base may be cut with a solvent before deployment. The nano-particles may have a size less than 100nm and may be substantially spherical or acicular. The nanoparticles may be antimony-doped tin-oxide and the resin may be un-diluted lacquer. Agglomerates having a size greater than 10 micrometres may be considered too large. The mixing step may be performed by a speed mixer operating at a rotational speed of up to 1600 revolutions per minute. Bead milling may reduce the size of agglomerates to below 5 micrometres. The filtering step may deploy a filter with openings having a size of 10 micrometres.

Variable electrical resistor

Patent FR2357040B1

Spherical electronic components

Electronic components are constructed from a solid spherical core of electrically nonconducting material such as a stabilized crosslinked copolymer plastic. The spherical core is coated with a plurality of concentric electrically functional layers to provide a variety of electronic components such as resistors and capacitors having pressure sensitive electrical characteristics. More complex electronic components such as transistors, thermistors, rectifiers and thermocouples may be provided depending upon the configuration and composition of concentric layers on the spherical core. A plurality of spheres may be combined in a pressure chamber to provide a variety of transducers and detectors such as a pressure transducer, photosensitive detector, infrared detector or memory cell bank.

Flexible switching devices

An electronic resistor user interface comprises flexible conductive materials and a flexible variably resistive element capable of exhibiting a change in electrical resistance on mechanical deformation and is characterised by textile-form electrodes (10,12), a textile form variably resistive element (14) and textile-form members (16) connective to external circuitry.

Pressure responsive variable electrical resistive rubber material

Abstract of the Disclosure A pressure-responsive variable electrical resistive rubber material including at least one inorganic filler selected from a group consisting of conductive carbon black, short fibers of nonmetallic inorganic material, powder, and whiskers. The filler is dispersed in a matrix formed of an electrically insulative rubber. The rubber material exhibits a gradually reducing resistance value as a gradually increased pressing force is applied thereto. The rubber material provides a wide range of relationship between the applied force and the electrical resistance there-of. The rubber material is adapted for use as a pressure sensor having excellent fatigue creep resistance.

Process for producing electric resistors having a wide range of specific resistance values

A process consisting in preparing a homogeneous system comprising particles of a first electrically conductive material arranged in substantially uniform manner inside a mass of a second liquid material which, when solidified, is both flexible and electrically insulating; and in solidifying the aforementioned mass of the aforementioned second liquid material, so as to form a matrix for supporting the aforementioned particles; throughout solidification of the aforementioned second material, a given pressure being applied on the system for the purpose of producing triaxial precompression of the aforementioned second material when solidified.

Electric-current-control apparatus

Patent FR2282157B3

Conductive device with variable electrical resistance

Piezoresistive type touch panel; manufacturing method thereof; and display device, touch pad, pressure sensor, touch sensor, game console and keyboard having the panel

The present invention relates to a touch panel, more specifically a piezoresistive type touch panel. According to the present invention, it is provided a manufacturing method of a piezoresistive type touch panel, comprising manufacturing a polymer membrane in which a piezoresistive type film pattern, of which resistance varies with applied pressure, is embedded; manufacturing a spacer layer and attaching one side of the spacer layer to a surface of the polymer membrane; and then attaching a bottom substrate to the other side of the spacer layer.

Silicone rubber molded products and a method for producing same

SILICONE RUBBER MOLDED PRODUCTS AND A METHOD FOR PRODUCING SAME Abstract Cured unitary molded articles containing conductive and insulating silicone rubber components are prepared by tightly contacting a curable insulating silicone rubber composition comprising a curable silicone rubber containing substantially no carbon black and a nonacyl-type peroxide with a cured conductive silicone rubber component containing carbon black and which has been cured by an addition reaction in the presence of a platinum-type catalyst and molding the resultant composition at elevated temperatures to cure the insulating silicone rubber component and form a unitary cured silicone rubber article. This invention also relates to cured silicone rubber articles prepared using the method of this invention.

Polymer composition

ELECTRICALLY CONDUCTIVE ELASTOMERIC DEVICES.

Pressure-sensitive elastic resistor compositions

Pressure-sensitive compositions adaptable for use as elastic resistors over a wide pressure range, useful as keyboard switches or vehicle-crash sensors, comprising hard, metallic-conductive particles insulatively distributed in elastomer.

PRESSURE MEASURING DEVICE USING A RESISTOR EXTENSOMETER

PRESSURE SENSITIVE MANAGER

Resistive sheet, pressure-sensitive switch, and input device

A resistive sheet includes a flexible cover sheet, a wiring part provided on the bottom face of the cover sheet, and ring, circular-arc, or spiral resistive layer connected to the wiring part. This resistive layer has an uneven bottom face. The resistive sheet also includes a spacer layer whose bottom face is disposed at a position lower than the resistive layer. The wiring part is sandwiched between the bottom face of the cover sheet and the spacer layer.

PROTECTIVE DEVICE ON A CLOSING EDGE

Optimized stress and strain distribution diaphragms

A stress distribution plate, such as a diaphragm for a pressure transducer, has a central plane and a neutral stress plane. According to the invention, the neutral stress plane is displaced from the central plane, providing for a mechanical advantage or amplification in the operation of the stress plate or transducer. The stress plate or diaphragm may be provided with a lacunose surface region or with a predetermined and preferably symmetrical pattern of mesas and recesses for a displacement of the neutral stress plane relative to the central plane.

Patent FR2438829B1

PRESSURE SENSITIVE CONDUCTOR AND PROCESS FOR ITS MANUFACTURING

a. Ce conducteur est caractérisé en ce qu'il est constitué par un élastomère isolant contenant de 3 à 40 % en volume de particules magnétiques électriquement conductrices ces particules étant distribuées dans l'élastomère de manière à constituer à la fois des parties conductrices de sensibilité élevée à la pression et des parties isolantes ou parties conductrices de faible sensibilité à la pression. b. L'invention trouve une application avantageuse notamment dans la conversion des signaux de pression et dans les dispositifs microélectroniques. at. This conductor is characterized in that it consists of an insulating elastomer containing from 3 to 40% by volume of electrically conductive magnetic particles, these particles being distributed in the elastomer so as to constitute both conductive parts of high sensitivity to pressure and insulating or conductive parts of low pressure sensitivity. b. The invention finds an advantageous application in particular in the conversion of pressure signals and in microelectronic devices.

Adjustable electrical resistance

Flexible switching devices

FIELD: electrical engineering; switching devices including flexible ones. SUBSTANCE: user interface has fabric-like flexible conducting electrodes connected to external circuit and fabric-like variable-resistance component capable of exposing resistance variation in response to mechanical strain and made in the form of coating applied to fabric interleaved between mentioned electrodes. Coating is made of conducting or variable-resistance material and elastomer binder. As an alternative, coating can be applied to first fabric-like flexible conducting electrode and made of one or more second fabric-like flexible conducting electrodes disposed so that they abut against mentioned fabric-like variable-resistance electrode and connected to external circuit. EFFECT: improved design. 34 cl, 4 dwg ÐÎÑÑÈÉÑÊÀß ÔÅÄÅÐÀÖÈß RU (19) (11) 2 273 911 (13) C2 (51) ÌÏÊ H01H 3/14 (2006.01) ÔÅÄÅÐÀËÜÍÀß ÑËÓÆÁÀ ÏÎ ÈÍÒÅËËÅÊÒÓÀËÜÍÎÉ ÑÎÁÑÒÂÅÍÍÎÑÒÈ, ÏÀÒÅÍÒÀÌ È ÒÎÂÀÐÍÛÌ ÇÍÀÊÀÌ (12) ÎÏÈÑÀÍÈÅ ÈÇÎÁÐÅÒÅÍÈß Ê ÏÀÒÅÍÒÓ (21), (22) Çà âêà: 2002133956/09, 17.05.2001 (24) Äàòà íà÷àëà îòñ÷åòà ñðîêà äåéñòâè ïàòåíòà: 17.05.2001 (30) Ïðèîðèòåò: 18.05.2000 GB 0011829.9 (72) Àâòîð(û): ËÀÑÑÈ Äýâèä (GB), ÄÆÎÓÍÇ Äàéàíí (GB), ËÅÔÒËÈ Ñòèâåí (GB) (43) Äàòà ïóáëèêàöèè çà âêè: 20.04.2004 (45) Îïóáëèêîâàíî: 10.04.2006 Áþë. ¹ 10 2 2 7 3 9 1 1 (56) Ñïèñîê äîêóìåíòîâ, öèòèðîâàííûõ â îò÷åòå î ïîèñêå: GB 2343516 À, 10.05.2000. RU 2134443 C1, 10.08.1999. RU 2025811 C1, 30.12.1994. ÅÐ 0177267 À, 09.04.1986. US 3794790 A, 26.02.1974. DE 3805887 C, 21.09.1989. (85) Äàòà ïåðåâîäà çà âêè PCT íà íàöèîíàëüíóþ ôàçó: 18.12.2002 2 2 7 3 9 1 1 R U (87) Ïóáëèêàöè PCT: WO 01/88935 (22.11.2001) C 2 C 2 (86) Çà âêà PCT: GB 01/02183 (17.05.2001) Àäðåñ äë ïåðåïèñêè: 129010, Ìîñêâà, óë. Á. Ñïàññêà , 25, ñòð.3, ÎÎÎ "Þðèäè÷åñêà ôèðìà Ãîðîäèññêèé è Ïàðòíåðû", ïàò.ïîâ. Þ.Ä.Êóçíåöîâó, ðåã.¹ 595 (54) ÃÈÁÊÈÅ ÏÅÐÅÊËÞ×ÀÞÙÈÅ ÓÑÒÐÎÉÑÒÂÀ (57) Ðåôåðàò: Èçîáðåòåíèå îòíîñèòñ ê ýëåêòðè÷åñêèì ïåðåêëþ÷àþùèì óñòðîéñòâàì è, â ÷àñòíîñòè, ê êîíñòðóêöèè ãèáêèõ ...

Film pressure sensitive resistor and pressure sensitive sensor

A film pressure sensitive resistor comprises conductive particles such as carbon black, a binder such as polyester resin, and spherical elastic particles having an average particle diameter of 2 µm to 50 µm, and further has average surface roughness of 0.1 µm to 3µm, a peak-to-peak concavo-convex period of 10 µm to 1000 µm. and an elastic modulus of 800 MPa to 8000 MPa so as to have reliable quality, and excellent environmental resistance, and durability to repeated use (depressing).

Patent JPS5824921B2

Strain gauge and method of manufacture

A pressure sensor has resistive elements for measuring strain on the surface of a diaphragm. Each resistive element has first and second metallic pads with at least two lines of piezoresistive material formed between the pads, each exhibiting a high length to width aspect ratio. The pressure gauge may be of a one piece, cup-shaped construction having a diaphragm forming the floor of the cup. The internal diameter of the cup is less than 10 mm, and piezoresistive, thick film elements are formed on the inside surface of the diaphragm. The piezoresistive elements may be formed using a pen to trace a pattern of resistive ink on the substrate surface, using a stencil or using electrostatic spraying of the resistive ink onto the substrate surface.

An elastomeric particle having an electrically conducting surface, a pressure sensor comprising said particles, a method for producing said sensor and a sensor system comprising sais sensors.

La presente invención se refiere a una partícula elastomérica (1, 1´, 1´´) que comprende un cuerpo elastomérico no conductor (2) que tiene una superficie eléctricamente conductora (4a, 4b, 4c). Se describen elementos sensores de presión (20, 20´, 20´´; 30, 30´, 30´´, 30´´´) que comprenden tales partículas elastoméricas, así como grupos de sensores (50´´, 50´´´, 50IV, 50V. 50VI, 50VII, 70) que comprende tales elementos sensores. También se describe un elemento sensor de presión (40, 40´, 40´´, 40´´´, 40IV, 40V, 40VI, 40VII), que comprende un elemento resistivo, (44, 44´, 44´´) que proporciona una ruta de conducción, un primer electrodo (42a, 42a-1, 42a-2, 42a-3, 42a-4, 42a-5 42a-6) conectado al elemento resistivo, un segundo electrodo (42b, 42b´), el cual en un estado estático está espaciado del primer electrodo, en donde el segundo electrodo, cuando el elemento sensor de presión está sometido a una presión, está colocado para hacer contacto con el primer electrodo o con el elemento resistivo. Se describen sistemas que comprenden tales elementos sensores y grupos de sensores, así como métodos para su fabricación.

Variable electric resistance and application to an electric regulator

Analytical device

A sensor for chemical species or biological species or radiation presenting to test fluid a polymer composition comprises polymer and conductive filler metal, alloy or reduced metal oxide and having a first level of electrical conductance when quiescent and being convertible to a second level of conductance by change of stress applied by stretching or compression or electric field, in which the polymer composition is characterized by at least one of the features in the form of particles at least 90% w/w held on a 100 mesh sieve; and/or comprising a permeable body extending across a channel of fluid flow; and/or affording in-and-out diffusion of test fluid and/or mechanically coupled to a workpiece of polymer swellable by a constituent of test fluid.

Current control element switched by a magnetic field

A current control or switching device comprises a contact switch 1, a varistor 2 and a variable resistance element 3. This element is made from an electrically conductive soft magnetic powder, such as grains of steel coated with a boride, carbide or nitride. These grains can be immersed in a liquid such as oil or perfluorinatedpolyether, or can be surrounded by a solid or gel. An electromagnet 4 applies a magnetic field to the element, and the resistance of the element is varied by varying the strength of that field, the element only being conductive in the presence of the field. Alternatively, a current-carrying coil housed around the element can be used. In an alternative embodiment, the element is responsive to both the magnetic field and to mechanical stress, and is rendered conductive only in the presence of both the field and the stress. The element can be used as a part of the switching device shown, this arrangement preventing the occurrence of arcing across the contact switch 1.

Electronic device having protection panel

An electronic device having a protection panel includes: a display device ( 3 ) having a display part ( 3 A); a housing ( 2 ) for mounting the display device ( 3 ) therein which has a display window ( 2 A) including an opening for allowing the display part ( 3 A) to face externally and a supporting portion ( 2 b ) in a shape of a frame; a protection panel ( 4 ) fitted into the display window ( 2 A), whose back side rim portion is supported by the supporting portion ( 2 b ); and a pressure-sensitive conductive print layer ( 30 ) which is disposed between the protection panel ( 4 ) and the supporting portion ( 2 b ) and configured to detect a pressing operation on the protection panel ( 4 ), and includes a resin having a glass-transition temperature (Tg) in a temperature range higher than room temperature as binder, and a conductive material dispersed therein.

Push operation type electric parts

Pressure detector

There provided is a pressure detector accurate in operation and high in reproducibility to have a resistance circuit substrate provided with at least one pair of electrodes and forming a resistance circuit between the electrodes through printing or other means, a block contact maker formed of a conductive elastic material to a shape ready for deforming, which is characterized in that the block contact maker is kept in contact with the resistance circuit substrate at all times, the block contact maker is deformed according as the state shifts from non-pressurized to pressurized to change a contact area gradually with the resistance circuit substrate, thus forming a variable resistance circuit parallel electrically with the resistance circuit substrate.

Electro-resistant material