Electronically controlled pressure relief valve

A pressure relief comprises a valve body which includes an inlet bore that is connectable to a flow line, an outlet bore that is connectable to a vent line and a valve bore that extends to between the inlet and outlet bores. A valve member is slidably supported in the valve bore and is moveable between a closed position in which the fluid in the flow line is prevented from flowing from the inlet bore to the outlet bore and an open position in which the fluid in the flow line is permitted to flow from the inlet bore to the outlet bore. A solenoid operated pilot valve is connected to the valve body over the valve bore, and a fluid chamber is located in the pilot valve above the valve member. The fluid chamber is filled with a hydraulic fluid, and the hydraulic fluid in the fluid chamber is operatively engaged with the valve member. In a closed position of the pilot valve the hydraulic fluid is trapped in the fluid chamber to thereby prevent the valve member from moving from its closed position to its open position, and in an open position of the pilot valve the hydraulic fluid is released from the fluid chamber to thereby allow the valve member to move from its closed position to its open position.

Vertical tine tiller

A vertical tine tiller that includes a chassis, an engine attached to the chassis, a handle assembly extending from the chassis to allow an operator to control the tiller, and at least two vertically oriented tine assemblies. Each of the tine assemblies include a plurality of tines attached to a plate, wherein the tine assemblies are rotatable about a vertical axis such that the tines of each tine assembly provide a grinding path and adjacent tine assemblies have at least partially overlapping grinding paths. The tines are removably connected to the plate.

RECIPROCATING PUMP WITH IMPROVED FLUID CYLINDER CROSS-BORE GEOMETRY

A reciprocating pump comprising a fluid end housing having a number of plunger sections, each of which includes a plunger bore within which a plunger is slidably received, a suction bore within which a suction valve is positioned, a discharge bore within which a discharge valve is positioned, and a cross bore chamber which is located between said bores and is configured as a surface of revolution. Each of the bores intersects the cross-bore chamber to thereby define a respective cross curve which is spatially separated from each adjacent cross curve. In this manner, the cross-bore chamber defines a single, contiguous surface which extends around and between all of said cross curves. 1. In a reciprocating pump comprising a fluid end housing having a number of plunger sections , each plunger section including a plunger bore within which a plunger is slidably received , a suction bore within which a suction valve is positioned and a discharge bore within which a discharge valve is positioned , the improvement comprising a cross bore chamber which is located between said bores and is configured as a surface of revolution , wherein each of said bores intersects the cross-bore chamber to thereby define a respective cross curve which is spatially separated from each adjacent cross curve , whereby the cross-bore chamber defines a single , contiguous surface which extends around and between all of said cross curves.2. The pump of claim 1 , wherein the cross-bore chamber is configured as an ellipsoid.3. The pump of claim 2 , wherein the ellipsoid comprises a first axis which is coaxial with a centerline of the plunger bore and a second axis which is coaxial with at least one of a centerline of the suction bore and a centerline of the discharge bore.4. The pump of claim 2 , wherein the ellipsoid comprises a first axis which is coaxial with a centerline of the plunger bore and a second axis which is parallel to but offset from at least one of a centerline of the suction bore ...

ELECTRONICALLY CONTROLLED PRESSURE RELIEF VALVE

A pressure relief comprises a valve body which includes an inlet bore that is connectable to a flow line, an outlet bore that is connectable to a vent line and a valve bore that extends to between the inlet and outlet bores. A valve member is slidably supported in the valve bore and is moveable between a closed position in which the fluid in the flow line is prevented from flowing from the inlet bore to the outlet bore and an open position in which the fluid in the flow line is permitted to flow from the inlet bore to the outlet bore. A solenoid operated pilot valve is connected to the valve body over the valve bore, and a fluid chamber is located in the pilot valve above the valve member. The fluid chamber is filled with a hydraulic fluid, and the hydraulic fluid in the fluid chamber is operatively engaged with the valve member. In a closed position of the pilot valve the hydraulic fluid is trapped in the fluid chamber to thereby prevent the valve member from moving from its closed position to its open position, and in an open position of the pilot valve the hydraulic fluid is released from the fluid chamber to thereby allow the valve member to move from its dosed position to its open position. 1. A pressure relief valve which operates to control the flow of fluid from a flow line to a vent line when the pressure of the fluid in the flow line reaches a predefined maximum pressure , the pressure relief valve comprising:a valve body which includes an inlet bore that is connectable to the flow line, an outlet bore that is connectable to the vent line and a valve bore that extends to between the inlet and outlet bores;a valve member which is slidably supported in the valve bore and is moveable between a closed position in which the fluid in the flow line is prevented from flowing from the inlet bore to the outlet bore and an open position in which the fluid in the flow line is permitted to flow from the inlet bore to the outlet bore;a solenoid operated pilot valve ...

FORCE MULTIPLYING SOLENOID VALVE

A solenoid actuated valve assembly includes a valve body () comprising a fluid inlet () and fluid outlet (), a valve member () disposed within the valve body, wherein a position of the valve member controls a fluid flow between the fluid inlet and fluid outlet, and a fluid chamber () above the valve member, wherein the fluid chamber is fluidly isolated from the fluid inlet and outlet. The solenoid actuated valve assembly further includes a solenoid actuator coupled to the valve body comprising a solenoid plunger () proximate the fluid chamber, wherein a force multiplying ratio of a surface area of the valve member exposed to the fluid chamber to a surface area of the solenoid plunger exposed to the fluid chamber is at least 1.5:1. 1. A solenoid actuated valve assembly comprising: a fluid inlet and fluid outlet;', 'a valve member disposed within the valve body, wherein a position of the valve member controls a fluid flow between the fluid inlet and fluid outlet;', 'a fluid chamber above the valve member, wherein the fluid chamber is fluidly isolated from the fluid inlet and outlet; and', 'a solenoid adjustment screw having a bleed channel therethrough;, 'a valve body comprising 'a solenoid plunger proximate the fluid chamber;', 'a solenoid actuator coupled to the valve body comprisingwherein a force multiplying ratio of a surface area of the valve member exposed to the fluid chamber to a surface area of the solenoid plunger exposed to the fluid chamber is at least 1.5:1.2. The solenoid actuated valve assembly of claim 1 , further comprising a lower cage disposed in the valve body in which the valve member slides.3. The solenoid actuated valve assembly of claim 2 , wherein the lower cage comprises a valve seat that contacts the valve member.4. The solenoid actuated valve assembly of claim 1 , further comprising an upper cage positioned above the fluid chamber.5. The solenoid actuated valve assembly of claim 4 , wherein the upper cage comprises one or more ports spaced ...

VERTICAL TINE TILLER

A vertical tine tiller that includes a chassis, an engine attached to the chassis, a handle assembly extending from the chassis to allow an operator to control the tiller, and at least two vertically oriented tine assemblies. Each of the tine assemblies include a plurality of tines attached to a plate, wherein the tine assemblies are rotatable about a vertical axis such that the tines of each tine assembly provide a grinding path and adjacent tine assemblies have at least partially overlapping grinding paths. The tines are removably connected to the plate. 1. A vertical tine tiller comprising:a power supply for generating rotational power;a transfer assembly operatively coupled to said power supply, said transfer assembly includes a drive shaft for transferring said rotational power, said drive shaft being rotatable about a horizontal axis;a power head, said power head including at least two power rods, wherein each of said power rods is operatively connected to a transfer gear that is operatively connected to said drive shaft for transferring said rotational power, each of said power rods being rotatable about a separate vertical axis; anda tine assembly operatively connected to each of said power rods, said tine assembly including a plurality of vertically aligned tines being rotatable about said vertical axis of said corresponding power rod.2. The vertical tine tiller of claim 1 , wherein said tine assembly further includes a plate to which said tines are removably attached and a collar coupled to one of said power rods.3. The vertical tine tiller of claim 1 , wherein each of said tines includes a mounting portion claim 1 , a grinding portion and an angled portion integrally connected to each other claim 1 , said grinding portion extending from said mounting portion claim 1 , and said angled portion extending from said grinding portion at an angle thereto.4. The vertical tine tiller of claim 3 , wherein said grinding portion and said angled portion include a ...

MANIFOLD TRAILER WITH MULTIPLE ARTICULATING ARM ASSEMBLIES

A manifold trailer comprises at least one main line having a plurality of discharge connectors and a plurality of articulating arm assemblies which are each connected to a corresponding discharge connector. Each arm assembly comprises a connector member which includes an inlet port, an outlet port and a third port which is located generally opposite the outlet port and is closed by a removable plug member. Each arm assembly also includes an articulating conduit assembly which comprises a first end that is connected to the inlet port and a riser swivel which is connected to the outlet port. During deployment of the arm assembly, a second end of the conduit assembly is connectable to a pumping unit to thereby fluidly connect the pumping unit to the main line. 1. In combination with a manifold trailer which comprises at least one main line having a plurality of discharge connectors , the improvement comprising a plurality of articulating arm assemblies which are each connected to a corresponding discharge connector , each arm assembly comprising:a connector member which includes at least an inlet port, an outlet port and a third port which is located generally opposite the outlet port and is closed by a removable plug member;an articulating conduit assembly which comprises a first end that is connected to the inlet port; anda riser swivel which is connected to the outlet port;wherein a second end of the conduit assembly is connectable to a pumping unit to thereby fluidly connect the pumping unit to the main line.2. The combination of claim 1 , wherein the third port is positioned vertically above the inlet and outlet ports.3. The combination of claim 2 , wherein the third port is positioned vertically above the conduit assembly when the second end is connected to the pumping unit.4. The combination of claim 1 , further comprising a choke insert which is positioned in the outlet port and is removable through the third port.5. The combination of claim 4 , wherein the ...

MANIFOLD ASSEMBLY WITH MULTIPLE ARTICULATING ARM ASSEMBLIES

A manifold assembly for connecting a plurality of pumping units to a wellhead includes at least one main line which is connectable to the wellhead and includes a plurality of discharge connectors, and a plurality of articulating arm assemblies which are each connected to a corresponding discharge connector. Each arm assembly comprises a connector member which includes at least an inlet port, an outlet port and a third port that is located generally opposite the outlet port and is closed by a removable plug member, an articulating conduit assembly which comprises a first end that is connected to the inlet port and a second end that is connectable to a corresponding one of the plurality of pumping units, and a riser swivel which is connected between the outlet port and the discharge connector. In use of the manifold assembly, each arm assembly is connected to a corresponding pumping unit and the main line is connected to the wellhead to thereby connect the pumping units to the wellhead. 1. A manifold assembly for connecting a plurality of pumping units to at least one wellhead , the manifold assembly comprising:at least one main line which is connectable to the wellhead, said main line including a plurality of discharge connectors; a connector member which includes at least an inlet port, an outlet port and a third port that is located generally opposite the outlet port and is closed by a removable plug member;', 'an articulating conduit assembly which comprises a first end that is connected to the inlet port and a second end that is connectable to a corresponding one of said plurality of pumping units; and', 'a riser swivel which is connected between the outlet port and the discharge connector;, 'a plurality of articulating arm assemblies which are each connected to a corresponding discharge connector, each arm assembly comprisingwhereby in use of the manifold assembly each arm assembly is connected to a corresponding pumping unit and the main line is connected to ...

HAMMER UNION CONNECTION AND RELATED METHODS OF ASSEMBLY

A hammer union () includes a male sub (), a threaded female sub (), a threaded union nut () disposed around abutting ends of the threaded female sub and the male sub, the abutting ends of the threaded female sub and the male sub include contact surfaces () perpendicular to a longitudinal axis () of the hammer union, and an outermost diameter of the perpendicular contact surfaces and a minor thread diameter of the female sub are equidistant from a longitudinal axis of the hammer union. A method of assembling a hammer union includes inserting a plurality of load segments () between a threaded union nut and a male sub, threadedly engaging internal threads of the threaded union nut with external threads () of a female sub, and engaging flat contact surfaces () of abutting ends of the male sub and the female sub. 1. A hammer union comprising:a male sub;a threaded female sub; anda threaded union nut disposed around abutting ends of the threaded female sub and the male sub,wherein the abutting ends of the threaded female sub and the male sub include contact surfaces perpendicular to a longitudinal axis of the hammer union, andwherein an outermost diameter of the perpendicular contact surfaces and a minor thread diameter of the female sub are equidistant from a longitudinal axis of the hammer union.2. The hammer union of claim 1 , further comprising a plurality of load segments radially disposed between the male sub and the threaded union nut.3. The hammer union of claim 2 , further comprising load segment grooves in the male sub and the threaded union nut in which the one or more load segments are disposed.4. The hammer union of claim 3 , wherein the one or more load segments are removable from the load segment grooves.5. The hammer union of claim 4 , further comprising a port in the threaded union nut through which the removable load segments are inserted between the threaded union nut and the male sub.6. The hammer union of claim 5 , further comprising a plug which is ...

HAMMER UNION CONNECTION AND RELATED METHODS OF ASSEMBLY

A hammer union includes a male sub, a threaded female sub, a threaded union nut disposed around abutting ends of the threaded female sub and the male sub, the abutting ends of the threaded female sub and the male sub include contact surfaces perpendicular to a longitudinal axis of the hammer union, and an outermost diameter of the perpendicular contact surfaces and a minor thread diameter of the female sub are equidistant from a longitudinal axis of the hammer union. A method of assembling a hammer union includes inserting a plurality of load segments between a threaded union nut and a male sub, threadedly engaging internal threads of the threaded union nut with external threads of a female sub, and engaging flat contact surfaces of abutting ends of the male sub and the female sub. 1. A threaded female sub comprising:a conduit having a first end and a female end, an outer contact surface substantially perpendicular to a longitudinal axis of the threaded female sub, an outermost diameter of the outer contact surface being equidistant as a minor thread diameter of the threaded female sub from the longitudinal axis of the threaded female sub;', 'an inner contact surface substantially perpendicular to the longitudinal axis of the threaded female sub and having a different axial location along the longitudinal axis of the threaded female sub than the outer contact surface; and', 'an intermediate contact surface between the outer contact surface and the inner contact surface, the intermediate contact surface having at least a portion that is both non-parallel and non-perpendicular to the longitudinal axis of the threaded female sub; and', 'a seal pocket formed on an inner surface of the threaded female sub radially inwardly adjacent the inner contact surface., 'wherein the female end of the threaded female sub comprises2. The threaded female sub of claim 1 , further comprising the seal pocket is defined by a shoulder formed on an inner surface claim 1 , and a seal ...

AXIAL 3D PRINTING

A method and apparatus of additive manufacturing is provided, along with a 3D printed product, in which 3D printing is implemented axially, according to a cylindrical coordinate system based on the cylindrical axis of shaft. A shaft is provided as a build base. A layer of additive material is deposited onto the surface of the shaft in rows having axial coordinates in an axial direction of the cylindrical axis. Each of the rows are separated from each other by azimuthal coordinates representing angles of rotation around the cylindrical axis. Radial coordinates are displaced from the cylindrical axis such that subsequent layers are similarly deposited atop radially underlying layers, where the layers are separated by layer thicknesses represented by respective radial coordinates. The shaft is supported by a rotating chuck and an extruder is supported by carriages movable in the axial and radial directions. 1. A method of creating a 3D printed product comprising:providing a shaft having a surface and a cylindrical axis, wherein the surface includes positions referenced to a coordinate system comprising azimuthal coordinates at angles around the cylindrical axis, axial coordinates in an axial direction of the cylindrical axis, and radial coordinates displaced from the cylindrical axis;forming a first layer by depositing an additive material at a plurality of positions upon the surface of the shaft, the plurality of positions having a respective plurality of azimuthal and axial coordinates and radial coordinates corresponding to points on the surface of the shaft;forming a subsequent plurality of layers by depositing the additive material at a plurality of respective positions upon a surface of an underlying layer, the respective plurality of positions of each of the subsequent plurality of layers having a respective plurality of azimuthal and axial coordinates and radial coordinates corresponding to a distance from the cylindrical axis of points on the surface of the ...

Hammer union connection and related methods of assembly

A hammer union (100) includes a male sub (102), a threaded female sub (104), a threaded union nut (106) disposed around abutting ends of the threaded female sub and the male sub, the abutting ends of the threaded female sub and the male sub include contact surfaces (120, 122) perpendicular to a longitudinal axis (50) of the hammer union, and an outermost diameter of the perpendicular contact surfaces and a minor thread diameter of the female sub are equidistant from a longitudinal axis of the hammer union. A method of assembling a hammer union includes inserting a plurality of load segments (108) between a threaded union nut and a male sub, threadedly engaging internal threads of the threaded union nut with external threads (105) of a female sub, and engaging flat contact surfaces (120, 122) of abutting ends of the male sub and the female sub.

Cement head quick connector

A coupling for quickly connecting a cement head to a casing of an oil or gas well comprises tube-shaped upper and lower bodies that connected to each other and are telescopically adjustable. The upper body receives the cement head and the lower body attaches to the casing. A clamp mechanism utilizing split ring segments is located in the lower body and is actuated by a piston for quickly attaching or releasing the lower body to and from the casing.

Gear drive unit with equalized shift

ABSTRACT OF THE DISCLOSURE A gear drive unit with an equalized shift is set forth. The gear drive unit is specifically a two-shaft transaxle having multiple forward speeds and at least one reverse speed. The transaxle specifically utilizes an existing transaxle housing originally designed to provide even more forward speeds. Certain existing internal components are also utilized. With the transaxle having fewer forward speeds, the forward speed gears are spaced farther apart on a shaft in the existing housing. To provide an equalized, in-line shift pattern, a shift coupling is employed between certain forward speed gears. The shift coupling connects one of the gears to the shaft when the coupling itself is engaged by a shift key of shift mechanism in the transaxle. Shifting through all gears is thereby accomplished by equal incremental movements of the shift mechanism of the transaxle.

A manifold assembly

A manifold assembly for connecting a plurality of pumping units to at least one wellhead, the manifold assembly comprising: at least one main line which is 5 connectable to the wellhead, said main line including a plurality of discharge connectors; a plurality of articulating arm assemblies which are each connected to a corresponding discharge connector, each arm assembly comprising: a connector member which includes at least an inlet port, an outlet port and a third port that is located generally opposite the outlet port and is closed by a removable plug member; o an articulating conduit assembly which comprises a first end that is connected to the inlet port and a second end that is connectable to a corresponding one of said plurality of pumping units; and a riser swivel which is connected between the outlet port and the discharge connector; whereby in use of the manifold assembly each arm assembly is connected to a corresponding pumping unit and the main line is connected to a 15 wellhead to thereby connect the pumping units to the wellhead.

Quick coupling for cementing head

Electronically controlled pressure relief valve

A pressure relief valve comprises a valve body which includes an inlet bore that is connectable to a flow line, an outlet bore that is connectable to a vent line and a valve bore that extends to between the inlet and outlet bores. A valve member is axially movable in the valve bore between a closed position in which fluid in the flow line is prevented from flowing between the inlet and outlet bores and an open position in which the fluid in the flow line is permitted to flow between the inlet and outlet bores. A fluid chamber is located in the valve bore adjacent the valve member, a source of hydraulic fluid is connected to the fluid chamber, and a solenoid operated pilot valve is connected between the fluid chamber and the source of hydraulic fluid. During operation of the pressure relief valve, the pilot valve is opened to fill the fluid chamber with hydraulic fluid, then is closed to trap the hydraulic fluid in the fluid chamber and thereby maintain the valve member in its closed position against pressure in the flow line, and then, when the pressure in the flow line reaches a predetermined level, is opened to release the hydraulic fluid from the fluid chamber and thereby allow the valve member to move from its closed position to its open position.

Manifold trailer with multiple articulating arm assemblies

Force multiplying solenoid valve

A solenoid actuated valve assembly includes a valve body (122) comprising a fluid inlet (132) and fluid outlet (134), a valve member (128) disposed within the valve body, wherein a position of the valve member controls a fluid flow between the fluid inlet and fluid outlet, and a fluid chamber (140) above the valve member, wherein the fluid chamber is fluidly isolated from the fluid inlet and outlet. The solenoid actuated valve assembly further includes a solenoid actuator coupled to the valve body comprising a solenoid plunger (102) proximate the fluid chamber, wherein a force multiplying ratio of a surface area of the valve member exposed to the fluid chamber to a surface area of the solenoid plunger exposed to the fluid chamber is at least 1.5:1.

Reciprocating pump with improved fluid cylinder cross-bore geometry

Triple function shift mechanism

Shift mechanism is provided for a gearbox, such as a transmission or transaxle, of a small vehicle. The shift mechanism has three functions. It shifts or changes the gear-engaged condition of the gearbox. It moves a clutch between engaged and disengaged positions. It also actuates a brake of the vehicle to move it between a braking position and a release position. Further, the shift mechanism achieves all three of these functions through a single shift lever which is manipulated by an operator. The shift mechanism also causes the brake to be moved to its braking position at any time the gearbox is moved between a forward speed condition and a reverse speed condition, to avoid extreme, lurching movements of the vehicle.

Triple function shift mechanism

ABSTRACT OF THE DISCLOSURE Shift mechanism is provided for a gearbox, such as a transmission or transaxle, of a small vehicle. The shift mechanism has three functions. It shifts or changes the gear-engaged condition of the gearbox. It moves a clutch between engaged and disengaged positions. It also actuates a brake of the vehicle to move it between a braking position and a release position. Further, the shift mechanism achieves all three of these functions through a single shift lever which is manipulated by an operator. The shift mechanism also causes the brake to be moved to its braking position at any time the gearbox is moved between a forward speed condition and a reverse speed condition, to avoid extreme, lurching movements of the vehicle.

Reciprocating pump with improved fluid cylinder cross-bore geometry

A reciprocating pump comprising a fluid end housing having a number of plunger sections, each of which includes a plunger bore within which a plunger is slidably received, a suction bore within which a suction valve is positioned, a discharge bore within which a discharge valve is positioned, and a cross bore chamber which is located between said bores and is configured as a surface of revolution. Each of the bores intersects the cross-bore chamber to thereby define a respective cross curve which is spatially separated from each adjacent cross curve. In this manner, the cross-bore chamber defines a single, contiguous surface which extends around and between all of said cross curves.

Reciprocating pump with improved fluid cylinder cross-bore geometry.

Una bomba reciprocante comprende un alojamiento de extremo de fluido que tiene varias secciones de émbolo, cada una de las cuales incluye un orificio de émbolo dentro del cual se recibe el émbolo en forma deslizable, un orificio de succión dentro del cual se coloca la válvula de succión, un orificio de descarga dentro del cual se coloca la válvula de descarga y una cámara de hueco transversal que está ubicada entre los orificios y está configurada como una superficie de revolución. Cada uno de los orificios se entrecruza con la cámara de hueco transversal para así, definir una curva cruzada respectiva que está separada espacialmente de cada curva cruzada adyacente. De esta forma, la cámara de hueco transversal define una sola superficie contigua que se extiende alrededor y entre todas las curvas cruzadas.

Vertical tine tiller

Force multiplying solenoid valve

A solenoid actuated valve assembly includes a valve body (122) comprising a fluid inlet (132) and fluid outlet (134), a valve member (128) disposed within the valve body, wherein a position of the valve member controls a fluid flow between the fluid inlet and fluid outlet, and a fluid chamber (140) above the valve member, wherein the fluid chamber is fluidly isolated from the fluid inlet and outlet. The solenoid actuated valve assembly further includes a solenoid actuator coupled to the valve body comprising a solenoid plunger (102) proximate the fluid chamber, wherein a force multiplying ratio of a surface area of the valve member exposed to the fluid chamber to a surface area of the solenoid plunger exposed to the fluid chamber is at least 1.5:1.

Vertical tine tiller

A vertical tine tiller that includes a chassis, an engine attached to the chassis, a handle assembly extending from the chassis to allow an operator to control the tiller, and at least two vertically oriented tine assemblies. Each of the tine assemblies include a plurality of tines attached to a plate, wherein the tine assemblies are rotatable about a vertical axis such that the tines of each tine assembly provide a grinding path and adjacent tine assemblies have at least partially overlapping grinding paths. The tines are removably connected to the plate.

Cementing head quick connector

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Combined harvester and thresher

Vertical tine tiller

A vertical tine tiller that includes a chassis, an engine attached to the chassis, a handle assembly extending from the chassis to allow an operator to control the tiller, and at least two vertically oriented tine assemblies. Each of the tine assemblies include a plurality of tines attached to a plate, wherein the tine assemblies are rotatable about a vertical axis such that the tines of each tine assembly provide a grinding path and adjacent tine assemblies have at least partially overlapping grinding paths. The tines are removably connected to the plate.