A device for the transmission of movements

1,125,576. Screw-and-nut gearing; cams; valves. COMMISSARIAT A L'ENERGIE ATOMIQUE, and P. VULLIEZ. 8 Feb., 1966 [19 Feb., 1965], No. 5500/66. Headings F2K, F2Q and F2V. Valve control means comprise coaxial shafts 1, 2 carrying at their upper ends crank-pins 3, 4 and rollers 5, 6 which engage a cam-groove 7 in a worm-wheel 8, and being splined at their lower ends to screw-threaded bushings 13, 14. Bushing 14 has an extension 18 which contains a piston 10 integral with the gate of the valve and has a screw-threaded connection, of relatively small pitch, with the bushing 13 which has a screw-threaded connection, of relatively coarser pitch, with a valve case 16. During the first half-rotation of wheel 8, shaft 2 remains stationary and bushing 13 rotates to effect rapid downward movement of piston 10 towards the valve closure position. During the second half-rotation of wheel 8, shaft 1 remains stationary and bushing 14 is rotated to complete the downward motion of piston 10 slowly. An assembly of flexible washers 19 holds the gate to its seating in the closed position.

METHODS AND APPARATUSES FOR VERTEBRAL BODY DISTRACTION AND FUSION EMPLOYING A COAXIAL SCREW GEAR SLEEVE MECHANISM

Improved methods and apparatuses for vertebral body distraction and fusion in accordance with various embodiments of the present invention employ one or more coaxial screw gear sleeve mechanisms. In various embodiments, coaxial screw gear sleeve mechanisms include a post with a threaded exterior surface and a corresponding sleeve configured to surround the post, the corresponding sleeve having a threaded interior surface configured to interface with the threaded exterior surface of the post and a geared exterior surface. A drive mechanism can be configured to interface with the geared exterior surface of the sleeve, causing the device to distract.

DUAL STROKE TRANSFER DRIVE

Transfer Drive for a Machine Tool A ball screw (22) in a transfer drive (10) is rotated to translate first and second carriages (32 and 48) at first and second rates, respectively. First and second ball nuts (32,40) engage the ball screw (22), the first ball nut (32) being fixed to the first carriage (34) and the second ball nut (40) being rotatably mounted on the second carriage (48). A power transmission unit (52) is connected between the ball screw (22) and the second ball nut (40) to establish a specified relationship between the rotation of the ball screw (22) and the second ball nut (40). The relationship is such that rotation of the ball screw (22) causes the first carriage (34) to be translated at the first rate by the first ball nut (32) and the second carriage (48) to be translated at the second rate by the second ball nut (40). (FIGURE 1).

ACTUATOR HAVING MAIN ROD AND AUXILIARY ROD

L'invention concerne un Actionneur télescopique comportant un corps dans lequel une tige principale est montée pour coulisser télescopiquement selon un axe de coulissement entre une position rentrée et une position sortie, l'actionneur télescopique comportant une tige auxiliaire montée pour coulisser télescopiquement dans la tige principale selon le dit axe de coulissement entre une position rentrée et une position sortie, l'actionneur comportant des moyens commandés de retenue de la tige auxiliaire en position rentrée dans la tige principale, l'actionneur comportant en outre des moyens de freinage d'un coulissement de la tige auxiliaire dans la tige principale dans le sens d'une extension. Selon l'invention, la tige auxiliaire comporte un filetage sur une surface externe, la tige principale portant à son extrémité un palier tournant qui centre la tige auxiliaire dans la tige principale et qui coopère par une liaison hélicoïdale réversible avec le filetage de la tige auxiliaire de sorte qu'une sortie de la tige auxiliaire provoque une rotation du palier tournant, les moyens de freinage étant agencés pour freiner une rotation du palier tournant lors d'une extension de la tige auxiliaire.

Dispositif pour le déplacement d'un coulisseau sur une machine-outil et pour la mesure de ce déplacement.

Dispositif pour la transmission de mouvements

Zylindervorrichtung

Eine Zylindervorrichtung, bestehend aus: einem Hohlwellenmotor (1), durch den eine Spindelwelle (2) geführt ist, einer mit einer Abtriebswelle des Hohlwellenmotors (1) verbundenen Verlangsamungsvorrichtung (3), einer ersten Spindelmutter (5), die mit der Spindelwelle (2) im Eingriff steht und die mit der Verlangsamungsvorrichtung (3) verbunden ist, so dass eine Rotationsantriebskraft des Hohlwellenmotors (1) übertragen werden kann, einer zweiten Spindelmutter (10), die mit der Spindelwelle (2) im Eingriff steht, mit der Verlangsamungsvorrichtung (3) verbunden ist und der ersten Spindelmutter (5) gegenüber angeordnet ist, wobei der Hohlwellenmotor (1) zwischen der ersten Spindelmutter (5) und der zweiten Spindelmutter (10) platziert ist, so dass eine Rotationsantriebskraft des Hohlwellenmotors (1) übertragen werden kann, einem Zahnrad mit Innenverzahnung (12), das die Spindelwelle (2) ringförmig umgibt, das derart angeordnet ist, dass dessen Rotationsachse mit derjenigen der Spindelwelle ...

WAY REDUCTION ACTUATOR, SPECIAL FOR A MOTOR VEHICLE CLUTCH

CONTROL MEMBER WITH HAUPTUND NEBENSTANGE

METHODS AND APPARATUSES FOR VERTEBRAL BODY DISTRACTION AND FUSION EMPLOYING A COAXIAL SCREW GEAR SLEEVE MECHANISM

Improved methods and apparatuses for vertebral body distraction and fusion in accordance with various embodiments of the present invention employ one or more coaxial screw gear sleeve mechanisms. In various embodiments, coaxial screw gear sleeve mechanisms include a post with a threaded exterior surface and a corresponding sleeve configured to surround the post, the corresponding sleeve having a threaded interior surface configured to interface with the threaded exterior surface of the post and a geared exterior surface. A drive mechanism can be configured to interface with the geared exterior surface of the sleeve, causing the device to distract.

TELESCOPING LINEAR ACTUATOR

A telescoping actuator is described which provides a first and third segments operatively connected to a second segment. A locking system locks the first and third segment in rotation with respect to one another. Upon rotation of the second segment, the first and third segments are displaced relative to one another and the second segment. The first and third segments are operatively coupled to the second segment by corresponding sets of threads in some embodiments. The locking system may be interlocking tubes, or shafts displaced internal to the actuator. Rotational energy may be imparted to the second stage externally about its outer diameter or internally by a driveshaft operatively connected to a drive source.

ACTUATOR HAS PRINCIPAL STEM AND STEM AUXILIARE.

Micro stepping drive

An internally and externally threaded double nut is screwed onto the threaded shaft of a stepper motor. The nut is restrained from rotational motion thereby limiting it to translation along the shaft axis. An internally threaded output sleeve is screwed onto the external thread of the double threaded nut. The pitch of the nut internal thread is smaller than that of the external thread so that rotary motion reduction occurs at the output sleeve. A ball bearing is positioned in contacting support between the sleeve and the shaft thereby minimizing output sleeve tolerance accumulations of eccentricity and axial positioning.

Actuator arrangement

An actuator arrangement comprises a first screw shaft (14, 118), a first nut (18, 120) cooperating with the first screw shaft (14, 118) such that rotation of the first screw shaft (14, 118) causes the first nut (18, 120) to translate thereon, a second screw shaft (16, 118), a second nut (20, 120) cooperating with the second screw shaft (16, 118) such that rotation of the second screw shaft (16, 118) causes the second nut (20, 120) to translate thereon, and first and second linkages (22, 24, 122, 124) connecting the first and second nuts (18, 20, 120), respectively, to an output member (26, 138), rotation of the first and second screw shafts (14, 16, 118) to cause translation of the first and second nuts (18, 20, 120) towards one another causing extending movement of the output member (26. 138) and rotation of the first and second screw shafts (14, 16, 118) to cause translation of the first and second nuts (18, 20, 120) away from one another causing retracting movement of the output member (26, 138).

A machine tool transfer drive

A ball screw (22) in a transfer drive (10) is rotated to translate first and second carriages (32 and 48) at first and second rates, respectively. First and second ball nuts (32,40) engage the ball screw (22), the first ball nut (32) being fixed to the first carriage (34) and the second ball nut (40) being rotatably mounted on the second carriage (48). A power transmission unit (52) is connected between the ball screw (22) and the second ball nut (40) to establish a specified relationship between the rotation of the ball screw (22) and the second ball nut (40). The relationship is such that rotation of the ball screw (22) causes the first carriage (34) to be translated at the first rate by the first ball nut (32) and the second carriage (48) to be translated at the second rate by the second ball nut (40).

DIFFERENZIALER LINEARANTRIEB

ACTUATOR CABLE TOLERANT SKEW CONSIDERATION

Vérin à câbles comprenant un châssis (1), une vis (2) montée à rotation sur le châssis et entraînée par un moteur électrique, un écrou (4) coopérant avec la vis et associé à des moyens d'anti-rotation de sorte qu'une rotation de la vis sous l'action du moteur provoque un déplacement axial de l'écrou, et deux câbles (10) sensiblement parallèles attelés à l'écrou de part de d'autre de celui-ci. Les câbles sont reliés à un organe d'ancrage (20; 30; 40) qui est interposé entre l'écrou et les câbles, l'organe d'ancrage étant solidarisé à l'écrou tout en étant mobile par rapport à celui-ci. Cable jack comprising a frame (1), a screw (2) rotatably mounted on the frame and driven by an electric motor, a nut (4) cooperating with the screw and associated with anti-rotation means so that a rotation of the screw under the action of the motor causes an axial displacement of the nut, and two cables (10) substantially parallel coupled to the nut on the other hand thereof. The cables are connected to an anchoring member (20; 30; 40) which is interposed between the nut and the cables, the anchoring member being secured to the nut while being movable relative thereto .

정렬오류를 허용하는 케이블 액츄에이터

... 샤시(1), 상기 샤시에 회전가능하게 장착되고 전기 모터에 의하여 구동되는 스크류(2), 상기 스크류와 결합되고 회전 방지 수단과 연계된 너트(4), 및 상기 너트의 양 측부에서 상기 너트에 결합된 두 개의 실질적으로 평행한 케이블(10)들을 포함하는 케이블 액츄에이터가 제공되는바, 상기 모터의 작용 하에서 상기 스크류의 회전은 상기 너트의 축방향 이동을 초래한다. 상기 케이블들은 상기 너트와 케이블들 사이에 개재된 계류 부재(20; 30; 40)에 연결되고, 상기 계류 부재는 너트에 대하여 움직일 수 있으면서도 너트에 대해 고정된다.

UNDER TRAVEL ACTUATOR, PARTICULARLY FOR AN AUTOMOBILE CLUTCH

Improvements relating to step-down transmission mechanisms

991,885. Screw and nut mechanism; cams. R. E. HAYDEN. Sept. 1, 1961 [Sept. 7, 1960], No. 30885/60. Headings F2K and F2Q. A slow linear motion is produced differentially from two intermediate rotary members driven at slightly different speeds from a rapidly rotating input shaft. In a feed mechanism for a drill head (not shown) axial feed movement of a shaft 34, against a return spring 38, is produced by the relative rotation of an externally threaded sleeve 28, slidably keyed to a shaft 25 driven by pulley 27, and a nut member 44 rigid with a rocking arm 41 pivoted at 42 on a flywheel 16 driven by a pulley 20. The pulleys 27, 20 are driven from a drive shaft 11 by a pair of pulleys 27, one of which may be of variable effective diameter to predetermine the relative speeds of the pulleys 27, 20. A piston 47 axially movable under manual control of a lever and cam 52, 53 has a skirt bore 48 which coacts with a ball 50 on the lever 41 to hold the nut member 44 in engagement with the threaded sleeve; a cam ring 49 in the skirt allowing release of the member 44 when the piston is moved axially by the lever 52. In a second embodiment (Fig. 3) the drill spindle 64 is moved axially by a quill 77 acted on by a face cam 60 and cam follower 61 rotated slowly with respect to each other by pulleys 65, 68 respectively. Slow feed and fast return or intermittent progressive feed may be obtained by suitable design of the face cam 60.

DIFFERENZIALER LINEAR DRIVE

LINEAR DRIVE FOR HÖHENVERSTELLBARE COLUMNS

Misalignment-tolerant cable actuator

A cable actuator comprising a chassis (1), a screw (2) mounted rotatably on the chassis and driven by an electric motor, a nut (4) engaging with the screw and associated with anti-rotation means such that a rotation of the screw, under the action of the motor, results in an axial movement of the nut, and two substantially parallel cables (10) coupled to the nut on either side of same. The cables are linked to an anchoring member (20; 30; 40) that is interposed between the nut and the cables, the anchoring member being secured to the nut while also being movable relative to same.

DIFFERENZIALER LINEARANTRIEB

Differential drive linear actuator

Improvements in machine tools

... 342,664. Indicating-apparatus. SOC. GENEVOISE D'INSTRUMENTS DE PHYSIQUE, 8, Rue des Vieux-Grenadiers, Geneva, Switzerland. Aug. 1, 1929, No. 23666. Convention date, Oct. 13, 1928. Void [Published under Sect. 91 of the Acts]. [Class 106 (iv).] The movements of a screwactuated work table or tool slide on a lathe, milling or boring machine &c., are indicated by a second screwed shaft in threaded engagement therewith and connected to the drive screw by transmission gearing capable of transmitting only a limited torque, so that the measuring screw is relieved from the wear of acting as a driving member. The drive screw c and measuring screw d, mounted in bearings on a bed b, respectively engage nuts s, r secured to the table &c. a slidable on guideways, the measuring screw being provided with a graduated head e from which the indications are read. The driving-gear comprises a crank-driven pinion p meshing with a pinion h, transmitting the drive to the screw c through a lost-motion connection ...

Methods and Apparatuses for Vertebral Body Distraction and Fusion Employing a Coaxial Screw Gear Sleeve Mechanism

Improved methods and apparatuses for vertebral body distraction and fusion in accordance with various embodiments of the present invention employ one or more coaxial screw gear sleeve mechanisms. In various embodiments, coaxial screw gear sleeve mechanisms include a post with a threaded exterior surface and a corresponding sleeve configured to surround the post, the corresponding sleeve having a threaded interior surface configured to interface with the threaded exterior surface of the post and a geared exterior surface. A drive mechanism can be configured to interface with the geared exterior surface of the sleeve, causing the device to distract.

Coaxial screw gear sleeve mechanism

An improved mechanism for expanding or lifting a device in accordance with various embodiments of the present invention is a coaxial screw gear sleeve mechanism. In various embodiments, coaxial screw gear sleeve mechanisms includes a post with a threaded exterior surface and a corresponding sleeve configured to surround the post, the corresponding sleeve having a threaded interior surface configured to interface with the threaded exterior surface of the post and a geared exterior surface. A drive mechanism can be configured to interface with the geared exterior surface of the sleeve, causing a device utilizing such a mechanism to expand or lift between a collapsed configuration and an expanded configuration.

Arrangement for adjusting mechanically the angular setting of the blades of axial flow machines, such as axial-flow blowers and the like

... 1,047,950. Axial-flow blowers. DINGLERWERKE A.G. Dec. 18, 1963 [Dec. 21, 1962], No. 50035/63. Heading F1C. An adjusting mechanism for the angular setting of the rotor blades of an axial-flow blower or the like is carried inside a stationary casing supported by the rotor, and comprises a member adapted to be shifted along the rotor axis, with its longitudinal position controlled from the outside of the casing, so as to move a further member coaxial with the rotor, rotating in unison therewith and adapted to adjust the angular setting of the blades in accordance with its longitudinal position. The shaft 2 of the rotor 1 of an axial flow blower is journalled in bearings (not shown) and the rotor supports a stationary casing 11 through a ball bearing 12 and a hub 10. The spindles 3 of the rotor blades 4 are connected through cranks 5 to an adjusting disc 7 which rotates with the rotor and is connected through a ball bearing 8 to a rod 9 so as to be movable axially with the latter to adjust ...

ACTUATOR HAS CORRECTION OF RACE, IN PARTICULAR FOR A CLUTCH OF MOTOR VEHICLE

Micro stepping drive

An internally and externally threaded double nut is screwed onto the threaded shaft of a stepper motor. The nut is restrained from rotational motion thereby limiting it to translation along the shaft axis. An internally threaded output sleeve is screwed onto the external thread of the double threaded nut. The pitch of the nut internal thread is smaller than that of the external thread so that rotary motion reduction occurs at the output sleeve. A ball bearing is positioned in contacting support between the sleeve and the shaft thereby minimizing output sleeve tolerance accumulations of eccentricity and axial positioning.

FEED MECHANISM FOR MACHINE-TOOLS.

DUAL STROKE TRANSFER DRIVE

ACTUATOR HAVING MAIN ROD AND AUXILIARY ROD

L'invention concerne un Actionneur télescopique comportant un corps dans lequel une tige principale est montée pour coulisser télescopiquement selon un axe de coulissement entre une position rentrée et une position sortie, l'actionneur télescopique comportant une tige auxiliaire montée pour coulisser télescopiquement dans la tige principale selon le dit axe de coulissement entre une position rentrée et une position sortie, l'actionneur comportant des moyens commandés de retenue de la tige auxiliaire en position rentrée dans la tige principale, l'actionneur comportant en outre des moyens de freinage d'un coulissement de la tige auxiliaire dans la tige principale dans le sens d'une extension. Selon l'invention, la tige auxiliaire comporte un filetage sur une surface externe, la tige principale portant à son extrémité un palier tournant qui centre la tige auxiliaire dans la tige principale et qui coopère par une liaison hélicoïdale réversible avec le filetage de la tige auxiliaire de sorte ...

Force compensation type push rod`s course adjustment actuator for controlling motor vehicle clutch, has course adjustment assembly displaced in translation by motor along adjustment stroke positions and driving unit drive strokes

The actuator has a course adjustment assembly (14) that connects an electric motor (12) to a push rod (16) and is displaced in translation by the motor along adjustment stroke positions (P0, P2) and driving unit drive strokes (P3-P4). The assembly is formed of push rod`s drive stopper position adjustment screw and nut (22, 24) and conjugated unidirectional drive rings (34a, 34b). The rings are supported by a casing (10) and cooperate with the assembly to displace it in a direction, when the assembly is displaced by the motor from an intermediate adjustment position (P1).

Differential screw jack

ACTUATOR CABLE TOLERANT SKEW CONSIDERATION

TELESCOPIC LINEAR ACTUATOR

Methods and apparatuses for vertebral body distraction and fusion employing a coaxial screw gear sleeve mechanism

Improved methods and apparatuses for vertebral body distraction and fusion in accordance with various embodiments of the present invention employ one or more coaxial screw gear sleeve mechanisms. In various embodiments, coaxial screw gear sleeve mechanisms include a post with a threaded exterior surface and a corresponding sleeve configured to surround the post, the corresponding sleeve having a threaded interior surface configured to interface with the threaded exterior surface of the post and a geared exterior surface. A drive mechanism can be configured to interface with the geared exterior surface of the sleeve, causing the device to distract.

Linear actuators

... 1,129,646. Cam mechanism. ROTAX Ltd. 16 June, 1966 [25 June, 1965], No. 26970/65. Heading F2K. A linear actuator comprises a non-rotatable shaft 11 which is given a stepped axial motion in the direction of the arrow A on rotation of an input shaft 19 by mechanism comprising a first nut 12, a second nut 13, a fixed housing abutment 15 and a movable abutment 14 which is reciprocated axially by rollers 21 engaging a face cam 17. The nuts 12, 13 are interconnected by a spring 23, and abutment 14 is prevented from rotating by means of a splined connection with the housing 10. A cage 21a for rollers 21 is driven from input shaft 19, through a gear 22, at half the speed at which cam 17 is driven from the shaft 19, through a gear 18. A pinion 24, coupled to shaft 19 by a spring 25, meshes a toothed periphery of nut 12. Springs 26 force the movable abutment 14 in the direction of the cam 17. On rotation of input shaft 19, cam 17 is rotated and causes axial movement, in the direction of arrow A, ...

JOINT DRIVING APPARATUS FOR A ROBOT AND THE ROBOT INCLUDING THE SAME FOR MINIMIZING A NUMBER OF ACTUATORS FOR DRIVING JOINTS

PURPOSE: A joint driving apparatus for a robot and the robot including the same are provided to driver a joint portion by using a single motor and wire. CONSTITUTION: A joint driving apparatus for a robot(500) comprises a driving motor(510), a pair of moving members(530A,530B), a wire(560), a joint portion(420). The driving motor rotates forward and backward. The pair of moving members is coupled to the driving motor. The moving members move linearly in a direction of facing each other according to the rotation of the driving motor. Both ends of the wire are connected to the pair of moving members. The joint portion is wound in the wire. The joint portion is driven according to the movement of the wire. COPYRIGHT KIPO 2010 ...

TRANSFER DRIVE APPARATUS OF TRANSFER MACHINE

An actuator with a main rod and an auxiliary rod

Device for the transmission of movements

Mechanism for eliminating overstrain of measuring spindles in machine tools

A machine tool transfer drive

同軸スクリューギアスリーブ機構を用いた椎体伸延および固定のための装置

Eccentric differential screw actuating, torque multiplying and speed changing device

An eccentric differential screw usable for torque multiplying, speed changing, positioning and actuating functions is disclosed. The disclosed device produces output between fixed output member positions. A rotatable shaft having threaded portions, constrained axially, acting as a screw, is threadably engaged by fine threads to a floating nut-screw acting as a nut. The same floating nut-screw acting as a screw axially eccentric with respect to the axis of the said fine threads is threadably engaged by coarse threads to a rotatable nut. The unique motions of the parts and the self-locking behavior of the device being made achievable by the eccentricity of the axes of the said fine and coarse threads. The speed ratio of the device is dependent on the ratio of the leads of the fine and coarse threads.

UNDER TRAVEL ACTUATOR, PARTICULARLY FOR AN AUTOMOBILE CLUTCH

Drilling machine

DEVICE FOR THE LINEAR DISPLACEMENT OF A VALVE MEMBER

Aktuatoranordnung für Flugzeugsteuerfläche

An actuator with a main rod and an auxiliary rod

... -9 The invention relates to a telescopic actuator comprising a cylinder (1) in which a main rod (2) is mounted to slide telescopically along a sliding axis (X) 5 between a retracted position and an extended position, the telescopic actuator including an auxiliary rod mounted to slide telescopically in the main rod along said sliding axis between a retracted position and an extended position, the actuator including controlled retaining means (30, 31, 32, 33) for retaining the auxiliary rod in the retracted position inside the main rod, the actuator further including brake means 10 for braking sliding of the auxiliary rod in the main rod in the extension direction. According to the invention, the auxiliary rod (20) has a thread (101) on an outside surface, the main rod (2) carrying at its end a rotary bearing (102) that centers the auxiliary rod inside the main rod and that co-operates via a reversible helical connection with the thread of the auxiliary rod such that extension of the auxiliary ...

Differential drive linear actuator

A linear actuator having an output shaft having a pair of driven wheels mounted thereon. One of the driven wheels is rotatably mounted in a fixed plane and has a drive nut for an associated thread on the output shaft. The other drive wheel is rotatably fixed to the output shaft. An input shaft is in side-by-side relationship with the output shaft and adapted to be rotated by a suitable power source. The input shaft provides a drive wheel for each of the driven wheels, with the ratio between each drive and driven wheel set being chosen to rotate the driven wheels at different speeds in the same rotational direction and thereby produce a controlled axial movement of the output shaft in a direction depending upon the relative rotation of the driven wheels. The other driven wheel and the drive wheel of its set are in the form of meshing helical gear wheels. A fail-safe arrangement is provided and has a clutch between the drive wheels of the input shaft, a back-drive for the output shaft, and ...

MECHANISM FOR VARYING DIAMETER OF A BODY

Twin screw spur gear drive

A twin screw spur gear drive in the form of an electromotive linear drive, useful for furniture in the field of hospital and nursing care, includes a housing for attachment of a flanged tube, and a screw drive having at least two spur wheels and a screw, which is wedged onto a journal of an electric motor and engaging the spur wheels, for operating a spindle. A drive nut is placed in threaded engagement with the spindle and secured against rotation. The drive nut carries a lifting tube which is connected to a component to be operated and moves back and forth as the spindle rotates and the nut is advanced along the spindle. In order to protect the twin screw drive from ingress of contaminants such as cleaning liquid, seals are provided for sealing at least some of the abutting surfaces between the housing and adjoining components.

Doppelschneckenstirnradantrieb

Dual stroke transfer drive

In a ball screw transfer drive for a transfer machine, first and second carriages are translated by rotation of a ball screw, the ball screw being actuated by a DC electric or other type of variable speed motor through a ball screw drive train. The first carriage is coupled to the ball screw through a first ball nut which is immovably joined to the first carriage and which has threads in engaging relationship with threads of the ball screw. The second carriage is coupled to the ball screw through a second ball nut which is journaled in bearings attached to the second carriage, threads of the second ball nut likewise being in engaging relationship with the ball screw. A power transmission train is mounted between the ball screw and the second ball nut to rotate the second ball nut during a specified rotation of the ball screw to maintain a pre-specified relationship between the speeds of translation of the first and second carriages during the specified ball screw rotation. During the specified ...

ACTUATOR WITH MAIN ROD AND AUXILIARY ROD

【課題】副ロッドの制動が改善されたアクチュエータを提供する。 【解決手段】伸縮自在アクチュエータは、主ロッドが収縮位置と伸張位置との間で滑動軸線に沿って伸縮自在に滑動するように内部に搭載される、シリンダと、滑動軸線に沿って主ロッド内で伸縮自在に滑動するように搭載される、副ロッドと、主ロッド内の収縮位置において副ロッドを保持するための保持手段（３０，３１，３２，３３）と、伸張方向において主ロッド内で副ロッドの滑動を制動するための制動手段とを具備する。副ロッド（２０）は、外面にねじ（１０１）を有し、主ロッドは、主ロッド内で副ロッドを中心に配置し、可逆ならせん状接続部を介して副ロッドのねじと協働して、副ロッドが伸張すると回転ベアリングを回転させる、回転ベアリングをその端部において支持しており、制動手段は、副ロッドの伸張中に、回転ベアリングの回転を制動するように配置される。 【選択図】図２

DEVICE FOR THE LINEAR DISPLACEMENT OF A VALVE MEMBER

The device comprises a spindle (2), which is rotatably supported perpendicular to the displacement direction and is made of a first spindle part (2a) and a second spindle part (2b). The two parts are provided with outside threads configured in opposite directions to each other. On the first spindle part (2a), a first nut (4a) having a complementary inside thread is applied. On the second spindle part (2b), a second nut (4b) having a complementary inside thread is applied. The first nut (4a) comprises a first bearing (4') for the rotatable support of one end of a first connecting rib (5a). The second nut (4b) comprises a second bearing (4b') for the rotatable support of one end of a second connecting rib (5b). The other end of the first connecting rib (5a) and the other end of the second connecting rib (5b) together are rotatably supported on a third bearing (6') perpendicular to the axis of rotation of the spindle (2). Parallel to the spindle (2), on the side thereof facing away from the ...

Mechanical drive for a blind spline broaching machine

A mechanical drive linkage for a blind spline broaching machine wherein a rotary motion provided by a servo driven helical ball or roller screw is converted to a linear reciprocal motion of a ram through the use of a kite link and a pivot link that as a part of their motion communicate with guide tracks in order to prevent side loads from being applied to the ball screw, its carriage, or the ram of the blind spline broaching machine.

METHODS AND APPARATUSES FOR VERTEBRAL BODY DISTRACTION AND FUSION EMPLOYING A COAXIAL SCREW GEAR SLEEVE MECHANISM

Improved methods and apparatuses for vertebral body distraction and fusion in accordance with various embodiments of the present invention employ one or more coaxial screw gear sleeve mechanisms. In various embodiments, coaxial screw gear sleeve mechanisms include a post with a threaded exterior surface and a corresponding sleeve configured to surround the post, the corresponding sleeve having a threaded interior surface configured to interface with the threaded exterior surface of the post and a geared exterior surface. A drive mechanism can be configured to interface with the geared exterior surface of the sleeve, causing the device to distract.

TWIN-SCREW SPUR GEAR

The invention relates to a twin-screw spur gear in the form of an electromotive linear drive that is preferably used for furniture in the field of hospital and nursing care. Said twin-screw spur gear drive is provided with a housing that is joined to a stationary flanged pipe and that has a screw drive whose screw is wedged up on the power take-off shaft of an electromotor. The screw engages with at least two screw spur gears and drives a spindle. The aim of the invention is to improve such a drive so that it can be easily cleaned or disinfected with a suitable liquid. In order to protect a cleaning liquid from penetrating the drive at least a part of the abutment surfaces of the housing is sealed by sealing elements (14, 26, 28, 37). The flanged pipe (23) is sealed from the transmission housing (11) by a toroidal sealing ring or an O-ring seal. A guide cap (25) is firmly inserted in the free end of the flanged pipe (23) and is sealed from the flanged pipe (23) by a seal, preferably a flat ...

METHODS AND APPARATUSES FOR VERTEBRAL BODY DISTRACTION AND FUSION EMPLOYING A COAXIAL SCREW GEAR SLEEVE MECHANISM

Improved methods and apparatuses for vertebral body distraction and fusion in accordance with various embodiments of the present invention employ one or more coaxial screw gear sleeve mechanisms. In various embodiments, coaxial screw gear sleeve mechanisms include a post with a threaded exterior surface and a corresponding sleeve configured to surround the post, the corresponding sleeve having a threaded interior surface configured to interface with the threaded exterior surface of the post and a geared exterior surface. A drive mechanism can be configured to interface with the geared exterior surface of the sleeve, causing the device to distract.

ROTARY AND LINEAR DUAL MOTION VALVE OPERATOR

Einrichtung zur mechanischen Laufschaufel-Verstellung bei axialen Stroemungsmaschinen,insbesondere Axialgeblaesen

Under travel actuator, particularly for an automobile clutch

An under travel actuator, particularly intended for an automobile clutch, including an engine (12) for the translation movement of a mobile gear (14) acting on a push stem (16) for the opening and closing of the clutch, the mobile gear including screw-nut means (22, 24) cooperating with two combined means of unidirectional driving in order to regulate the length of the push stem (16) according to the wear of the clutch surfaces subject to friction.

Under travel actuator, particularly for automobile clutch

An under travel actuator, particularly intended for an automobile clutch, including an engine (12) for the translation movement of a mobile gear (14) acting on a push stem (16) for the opening and closing of the clutch, the mobile gear including screw-nut means (22, 24) cooperating with two combined means of unidirectional driving in order to regulate the length of the push stem (16) according to the wear of the clutch surfaces subject to friction.

Device for the linear displacement of a valve member

The device includes a spindle rotatably supported perpendicular to a value displacement direction and is made of a first spindle part and a second spindle part. The two parts are provided with outside threads configured in opposite directions to each other. On the first spindle part, a first nut having a complementary inside thread is applied. On the second spindle part, a second nut having a complementary inside thread is applied. The first nut includes a first bearing for the rotatable support of one end of a first connecting rib. The second nut comprises a second bearing for the rotatable support of one end of a second connecting rib. The other end of the first connecting rib and the other end of the second connecting rib are rotatably supported on a third bearing. Parallel to the spindle, on the side thereof facing away from the valve member, a stop is provided for the first nut and for the second nut, the stop surface extends perpendicular to the displacement direction of the valve ...

UNDER TRAVEL ACTUATOR, PARTICULARLY FOR AN AUTOMOBILE CLUTCH

An under travel actuator, particularly intended for an automobile clutch, including an engine (12) for the translation movement of a mobile gear (14) acting on a push stem (16) for the opening and closing of the clutch, the mobile gear including screw-nut means (22, 24) cooperating with two combined means of unidirectional driving in order to regulate the length of the push stem (16) according to the wear of the clutch surfaces subject to friction. © KIPO & WIPO 2009 ...

UNDER TRAVEL ACTUATOR, PARTICULARLY FOR AN AUTOMOBILE CLUTCH

An under travel actuator, particularly intended for an automobile clutch, including an engine (12) for the translation movement of a mobile gear (14) acting on a push stem (16) for the opening and closing of the clutch, the mobile gear including screw-nut means (22, 24) cooperating with two combined means of unidirectional driving in order to regulate the length of the push stem (16) according to the wear of the clutch surfaces subject to friction.

A machine tool transfer drive

A ball screw (22) in a transfer drive (10) is rotated to translate first and second carriages (32 and 48) at first and second rates, respectively. First and second ball nuts (32,40) engage the ball screw (22), the first ball nut (32) being fixed to the first carriage (34) and the second ball nut (40) being rotatably mounted on the second carriage (48). A power transmission unit (52) is connected between the ball screw (22) and the second ball nut (40) to establish a specified relationship between the rotation of the ball screw (22) and the second ball nut (40). The relationship is such that rotation of the ball screw (22) causes the first carriage (34) to be translated at the first rate by the first ball nut (32) and the second carriage (48) to be translated at the second rate by the second ball nut (40).

Device for the linear displacement of a valve member

The device comprises a spindle (2), which is rotatably supported perpendicular to the displacement direction and is made of a first spindle part (2a) and a second spindle part (2b). The two parts are provided with outside threads configured in opposite directions to each other. On the first spindle part (2a), a first nut (4a) having a complementary inside thread is applied. On the second spindle part (2b), a second nut (4b) having a complementary inside thread is applied. The first nut (4a) comprises a first bearing (4') for the rotatable support of one end of a first connecting rib (5a). Thesecond nut (4b) comprises a second bearing (4b') for the rotatable support of one end of a second connecting rib (5b). The other end of the first connecting rib (5a) and the other end of the second connecting rib (5b) together are rotatably supported on a third bearing (6') perpendicular to the axis of rotation of the spindle (2). Parallel to the spindle (2), on the side thereof facing away from the ...

정렬오류를 허용하는 케이블 액츄에이터

샤시(1), 상기 샤시에 회전가능하게 장착되고 전기 모터에 의하여 구동되는 스크류(2), 상기 스크류와 결합되고 회전 방지 수단과 연계된 너트(4), 및 상기 너트의 양 측부에서 상기 너트에 결합된 두 개의 실질적으로 평행한 케이블(10)들을 포함하는 케이블 액츄에이터가 제공되는바, 상기 모터의 작용 하에서 상기 스크류의 회전은 상기 너트의 축방향 이동을 초래한다. 상기 케이블들은 상기 너트와 케이블들 사이에 개재된 계류 부재(20; 30; 40)에 연결되고, 상기 계류 부재는 너트에 대하여 움직일 수 있으면서도 너트에 대해 고정된다. (1), a screw (2) rotatably mounted on the chassis and driven by an electric motor, a nut (4) associated with the screw and associated with the anti-rotation means, and a nut There is provided a cable actuator comprising two substantially parallel cables (10) coupled, wherein rotation of the screw under the action of the motor results in axial movement of the nut. The cables are connected to mooring members (20; 30; 40) interposed between the nuts and cables, and the mooring members are movable relative to the nuts while being fixed relative to the nuts.

Methods and apparatuses for vertebral body distraction and fusion employing a coaxial screw gear sleeve mechanism

Improved methods and apparatuses for vertebral body distraction and fusion in accordance with various embodiments of the present invention employ one or more coaxial screw gear sleeve mechanisms. In various embodiments, coaxial screw gear sleeve mechanisms include a post with a threaded exterior surface and a corresponding sleeve configured to surround the post, the corresponding sleeve having a threaded interior surface configured to interface with the threaded exterior surface of the post and a geared exterior surface. A drive mechanism can be configured to interface with the geared exterior surface of the sleeve, causing the device to distract.

Robot joint driving apparatus and robot having the same

Disclosed are a robot joint driving apparatus and a robot having the same. The robot joint driving apparatus includes a driving motor being rotatable in forward and reverse directions; a pair of movable members connected to the driving motor, and moving rectilinearly in mutually opposite directions according to the rotation of the driving motor; a wire provided with both ends respectively connected to the pair of movable members; and a joint unit, on which the wire is wound, driven by the movement of the wire.

Differential driving mechanism

TELESCOPING LINEAR ACTUATOR

A telescoping actuator is described which provides a first and third segments operatively connected to a second segment. A locking system locks the first and third segment in rotation with respect to one another. Upon rotation of the second segment, the first and third segments are displaced relative to one another and the second segment. The first and third segments are operatively coupled to the second segment by corresponding sets of threads in some embodiments. The locking system may be interlocking tubes, or shafts displaced internal to the actuator. Rotational energy may be imparted to the second stage externally about its outer diameter or internally by a driveshaft operatively connected to a drive source.

Actuator with a main rod and an auxiliary rod

A telescopic actuator comprising a cylinder in which a main rod is mounted to slide telescopically along a sliding axis (X) between a retracted position and an extended position. The actuator includes an auxiliary rod mounted to slide in the main rod along the sliding axis between retracted and extended positions. A structure is provided for retaining the auxiliary rod in the retracted position inside the main rod. There also is a brake structure for braking sliding of the auxiliary rod in the main rod in the extension direction. The auxiliary rod has a thread on an outside surface, and the main rod has a rotary bearing that centers the auxiliary rod inside the main rod and co-operates via a reversible helical connection with the thread of the auxiliary rod such that extension of the auxiliary rod causes the rotary bearing to rotate.

Mechanical movement

Screw feed

WORKPIECE ORIENTATION APPARATUS

A workpiece orientation apparatus includes a base, two pushing bars, a linear actuator, a connecting member, at least one first connecting bar, and a second connecting bar. The two pushing bars are slidably connected to the base and aligned apart along a first direction. The linear actuator is mounted on the base. The connecting member is driven by the linear actuator to move back and forth along a second direction. One end of the first connecting bar is rotatably connected to the connecting member, and the other end of the first connecting bar is rotatably connected to one of the two pushing bars. One end of the second connecting bar is connected to the first connecting bar and is rotatably assembled together on the connecting member. The other end of the second connecting bar is rotatably connected to the other of the two pushing bars.

Mechanical movement

Coaxial screw gear sleeve mechanism

An improved mechanism for expanding or lifting a device in accordance with various embodiments of the present invention is a coaxial screw gear sleeve mechanism. In various embodiments, coaxial screw gear sleeve mechanisms includes a post with a threaded exterior surface and a corresponding sleeve configured to surround the post, the corresponding sleeve having a threaded interior surface configured to interface with the threaded exterior surface of the post and a geared exterior surface. A drive mechanism can be configured to interface with the geared exterior surface of the sleeve, causing a device utilizing such a mechanism to expand or lift between a collapsed configuration and an expanded configuration.

TELESCOPING LINEAR ACTUATOR

Zylindervorrichtung

Eine Zylindervorrichtung, bestehend aus: einem Hohlwellenmotor (1) durch den eine Spindelwelle (2) geführt ist, einer mit einer Abtriebswelle des Hohlwellenmotors (1) verbundenen Verlangsamungsvorrichtung (3), einer ersten Spindelmutter (5), die mit der Spindelwelle (2) im Eingriff steht und die mit der Verlangsamungsvorrichtung (3) verbunden ist, so dass eine Rotationsantriebskraft des Hohlwellenmotors (1) übertragen werden kann, und einer zweiten Spindelmutter (10), die mit der Spindelwelle (2) im Eingriff steht und der ersten Spindelmutter (5) gegenüber angeordnet ist, wobei der Hohlwellenmotor (1) zwischen der ersten Spindelmutter (5) und der zweiten Spindelmutter (10) platziert ist, so dass eine Rotationsantriebskraft des Hohlwellenmotors (1) übertragen werden kann.

A device for the transmission of movements

Vorrichtung zur linearen Bewegung eines Ventilgliedes

Die Vorrichtung besteht aus einer senkrecht zur Bewegungsrichtung drehbar gelagerten Spindel (2), die aus einem ersten Spindelteil (2a), einem zweiten Spindelteil (2b) besteht. Diese weisen jeweils gegenläufig zueinander ausgebildete Außengewinde auf. Auf dem ersten Spindelteil (2a) ist eine erste Mutter (4a) mit komplementärem Innengewinde aufgebracht. Auf dem zweiten Spindelteil (2b) ist eine zweite Mutter (4b) mit komplementärem Innengewinde aufgebracht. Die erste Mutter (4a) weist ein erstes Lager (4') für die drehbare Lagerung des einen Endes eines ersten Verbindungssteges (5a) auf. Die zweite Mutter (4b) weist ein zweites Lager (4b') für die drehbare Lagerung des einen Endes eines zweiten Verbindungssteges (5b) auf. Das andere Ende des ersten Verbindungssteges (5a) und das andere Ende des zweiten Verbindungssteges (5b) sind gemeinsam an einem dritten Lager (6') senkrecht zur Drehachse der Spindel (2) drehbar gelagert. Parallel zur Spindel (2) ist auf ihrer, dem Ventilglied abgewandten ...

Medical Device Employing a Coaxial Screw Gear Sleeve Mechanism

Medical devices in accordance with various embodiments of the present invention employ one or more coaxial screw gear sleeve mechanisms. In various embodiments, coaxial screw gear sleeve mechanisms include a post with a threaded exterior surface and a corresponding sleeve configured to surround the post, the corresponding sleeve having a threaded interior surface configured to interface with the threaded exterior surface of the post and a geared exterior surface. A drive mechanism can be configured to interface with the geared exterior surface of the sleeve, causing the device to expand. 1. A spinal implant extending along a longitudinal axis between a first region and a second region , the spinal implant comprising:an upper body for engaging an upper vertebral body;a lower body for engaging a lower vertebral body;a first member located in the first region, the first member including an opening having internal threads formed therein, the first member being translatable in a first direction with respect to at least one of the upper and lower bodies to cause the upper and lower bodies to move away from one another in at least the first region;a second member located in the second region, the second member including an opening having internal threads formed therein, the second member being translatable in a second direction with respect to at least one of the upper and lower bodies to cause the upper and lower bodies to move away from one another in at least the second region;a first actuator extending along a first axis and operably connected to the first member such that actuation of the first actuator causes the first member to translate in the first direction; anda second actuator extending along a second axis and operably connected to the second member such that actuation of the second actuator causes the second member to translate in the second direction;wherein the first and second actuators are actuatable independently of one another to independently move the ...

COAXIAL SCREW GEAR SLEEVE MECHANISM

An improved mechanism for expanding or lifting a device in accordance with various embodiments of the present invention is a coaxial screw gear sleeve mechanism. In various embodiments, coaxial screw gear sleeve mechanisms includes a post with a threaded exterior surface and a corresponding sleeve configured to surround the post, the corresponding sleeve having a threaded interior surface configured to interface with the threaded exterior surface of the post and a geared exterior surface. A drive mechanism can be configured to interface with the geared exterior surface of the sleeve, causing a device utilizing such a mechanism to expand or lift between a collapsed configuration and an expanded configuration. 1. (canceled)2. A method comprising:placing a lifting device in a retracted state in which a first member of the lifting device is adjacent a second member of the lifting device; androtating a first sleeve rotatably coupled to the first member, which, in turn, non-rotatably translates a first post extending from the second member, thereby transitioning the lifting device to an expanded state in which the first and second members are spaced apart.3. The method according to claim 2 , wherein rotating the first sleeve includes axially translating the first sleeve relative to the first member simultaneously with the first post translating relative to the first sleeve.4. The method according to claim 2 , wherein rotating the first sleeve includes the first sleeve surrounding the first post.5. The method according to claim 4 , wherein rotating the first sleeve includes the first post having a threaded exterior surface threadably engaging a threaded interior surface of the first sleeve.6. The method according to claim 2 , wherein rotating the first sleeve includes the first sleeve having a helically geared exterior surface.7. The method according to claim 6 , wherein rotating the first sleeve includes actuating a drive mechanism having a surface configured to interface ...

采用同轴螺纹齿轮套机构的椎体撑开与融合方法及装置

根据本发明多种实施例的用于椎体撑开和融合的改进方法和装置采用一或多各同轴螺纹齿轮套机构。多种实施例中，同轴螺纹齿轮套机构包括带有螺纹外表面的柱件及配置为围绕所述柱件的相应套筒，所述相应套筒包括与所述柱件的螺纹外表面接合的螺纹内表面以及齿轮外表面。驱动机构可具有配置为与所述套筒的齿轮外表面接合并且使装置撑开。

Rongeur

A surgical instrument in the form of a power driven rongeur which includes an air turbine motor adapted to control the closing and opening of the cutting blades. A toggle linkage connects the cutting blades to a threaded member which linearly advances and retracts upon rotation of the air motor so as to cause the opening and closing of the cutting blades respectively.

Actuator with main rod and auxiliary rod

Device for linear movement of valve members

Actuator with main rod and auxiliary rod

Actionneur télescopique comportant un corps (1) dans lequel une tige principale (2) est montée pour coulisser télescopiquement selon un axe de coulissement (X) entre une position rentrée et une position sortie, l'actionneur télescopique comportant une tige auxiliaire montée pour coulisser télescopiquement dans la tige principale selon le dit axe de coulissement, l'actionneur comportant des moyens commandés de retenue (30,31,32,33) de la tige auxiliaire en position rentrée dans la tige principale, l'actionneur comportant en outre des moyens de freinage d'un coulissement de la tige auxiliaire dans la tige principale dans le sens d'une extension. La tige auxiliaire (20) comporte un filetage (101) sur une surface externe, la tige principale (2) portant à son extrémité un palier tournant (102) qui centre la tige auxiliaire dans la tige principale et qui coopère par une liaison hélicoïdale réversible avec le filetage de la tige auxiliaire de sorte qu'une sortie de la tige auxiliaire provoque une rotation du palier tournant, les moyens de freinage (106,110) étant agencés pour freiner une rotation du palier tournant lors d'une extension de la tige auxiliaire.

Apparatuses for vertebral body distraction and fusion employing a coaxial screw gear sleeve mechanism

Under travel actuator, particularly for an automobile clutch

特别用于机动车离合器的行程补偿式致动器，该致动器包括使作用在推杆(16)上的活动装置(14)平移的马达(12)以便开合离合器，活动装置包括螺杆-螺母部件(22、24)，其与两个联合单向传动部件配合以便根据离合器摩擦衬片的磨损来调节推杆(16)的长度。

winnard

Actuator with main rod and auxiliary rod

本发明涉及一种伸缩致动器，包括圆筒(1)，其中安装有沿滑动轴线(X)在收缩位置和伸展位置之间伸缩滑动的主杆(2)；伸缩致动器包括辅助杆，其安装用于在主杆内沿所述滑动轴线在收缩位置和伸展位置之间伸缩滑动；致动器包括可控的保持装置(30，31，32，33)，其使辅助杆在主杆内保持在收缩位置；致动器进一步包括制动装置用来制动辅助杆在主杆中沿伸展方向的滑动。根据本发明，辅助杆(20)外表面有螺纹(101)，主杆(2)端部支承有与在主杆内的辅助杆对中的旋转轴承(102)，其通过双向螺旋型连接与辅助杆的螺纹共同作用，因而辅助杆的伸展引起旋转轴承的旋转；制动装置(106，110)用来制动在辅助杆伸展过程中的旋转轴承的旋转。

Cylinder device

提供一种气缸装置，能够在减少旋转中心的偏摆，提高丝杠进给精度的同时，抑制切换转速时电动机输出发生变动，控制输送部进给速度，使其在高速域至低速域的较大范围内保持稳定。端部固定在内置制动器(6)和编码器(7)的外罩(8)上的中空轴电动机(1)，其中不仅贯穿着滚珠丝杠(2)，还连接着由行星齿轮减速机构成的减速机(3)，在中空轴电动机(1)和减速机(3)的两边相对而设的一对滚珠丝杠螺母(5和10)分别与丝杠(2)螺合，设置在减速机(3)输出齿轮(4)端部的垫片(11)连接着内齿轮(12)，内齿轮(12)与连接在滚珠丝杠螺母(5)上的外齿轮(13)啮合，减速机(3)的输出齿轮(4)通过花键与连接轴(9)啮合。

Linear actuators

Misalignment-tolerant cable actuator

一种缆绳致动器包括：底架(1)；螺杆(2)，其可转动地配装在底架上，且借助于电动机保持驱动；螺母(4)，其与螺杆啮合，并与防转动装置相联，这样，螺杆在电动机作用下转动，引起螺母轴向位移；以及两个基本上平行的缆绳(10)，它们连结到螺母的两侧上。所述缆绳连接到锚固单元(20；30；40)，该锚固单元插设在所述螺母和所述缆绳之间，锚固单元固定到螺母，同时还可相对于螺母移动。

actuator with a main rod and an auxiliary rod

The invention relates to a telescopic actuator comprising a cylinder ( 1 ) in which a main rod ( 2 ) is mounted to slide telescopically along a sliding axis (X) between a retracted position and an extended position, the telescopic actuator including an auxiliary rod mounted to slide telescopically in the main rod along said sliding axis between a retracted position and an extended position, the actuator including controlled retaining means ( 30, 31, 32, 33 ) for retaining the auxiliary rod in the retracted position inside the main rod, the actuator further including brake means for braking sliding of the auxiliary rod in the main rod in the extension direction. According to the invention, the auxiliary rod ( 20 ) has a thread ( 101 ) on an outside surface, the main rod ( 2 ) carrying at its end a rotary bearing ( 102 ) that centers the auxiliary rod inside the main rod and that co-operates via a reversible helical connection with the thread of the auxiliary rod such that extension of the auxiliary rod causes the rotary bearing to rotate, the brake means ( 106, 110 ) being arranged to brake rotation of the rotary bearing during extension of the auxiliary rod.

Misalignment-tolerant cable actuator

A cable actuator comprising a chassis (1), a screw (2) mounted rotatably on the chassis and driven by an electric motor, a nut (4) engaging with the screw and associated with anti-rotation means such that a rotation of the screw, under the action of the motor, results in an axial movement of the nut, and two substantially parallel cables (10) coupled to the nut on either side of same. The cables are linked to an anchoring member (20; 30; 40) that is interposed between the nut and the cables, the anchoring member being secured to the nut while also being movable relative to same.

The cable actuator for allowing alignment inaccurate

一种缆绳致动器包括：底架(1)；螺杆(2)，其可转动地配装在底架上，且借助于电动机保持驱动；螺母(4)，其与螺杆啮合，并与防转动装置相联，这样，螺杆在电动机作用下转动，引起螺母轴向位移；以及两个基本上平行的缆绳(10)，它们连结到螺母的两侧上。所述缆绳连接到锚固单元(20；30；40)，该锚固单元插设在所述螺母和所述缆绳之间，锚固单元固定到螺母，同时还可相对于螺母移动。

Device for separating and merging articles

一种物件分离与合并装置，其包括底座，与该底座连接的导向杆，沿第一方向滑动套设于该导向杆的两个拨动杆，该两个拨动杆用于拨动物件以将物件分离与合并，设置于底座的线性驱动机构，由该线性驱动机构驱动且沿第二方向移动的连接件，设于该连接件的转轴，交叉设置的第一连杆及第二连杆，第一连杆及第二连杆的一端均与转轴转动连接，另一端均与一个拨动杆转动连接，以带动拨动杆相对导向杆沿第一方向移动。上述物件分离与合并机构具有结构简单且操作便利的优点。

Differenzialer linearantrieb

Linearantrieb für höhenverstellbare säulen

Wegminderungsaktuator, speziell für eine kraftfahrzeugkupplung

Medical Device Employing a Coaxial Screw Gear Sleeve Mechanism

Medical devices in accordance with various embodiments of the present invention employ one or more coaxial screw gear sleeve mechanisms. In various embodiments, coaxial screw gear sleeve mechanisms include a post with a threaded exterior surface and a corresponding sleeve configured to surround the post, the corresponding sleeve having a threaded interior surface configured to interface with the threaded exterior surface of the post and a geared exterior surface. A drive mechanism can be configured to interface with the geared exterior surface of the sleeve, causing the device to expand.

Theodobe naish

Rock-drill machine

Improvement in throttle-valve gear

Doppelschneckenstirnradantrieb

Ein Doppelschneckenstirnradantrieb in Form eines elektromotorischen Linearantriebes, der bevorzugt für Möbel in Krankenhaus- und Pflegebereich verwendet wird, der mit einem Gehäuse ausgestattet ist, an das eine feststehendes Flanschrohr angesetzt ist und der einen Schneckentrieb aufweist, dessen Schnecke auf den Motorzapfen eines Elektromotors aufgekeilt ist, und die mit mindestens zwei Schnekkenstirnrädern in Eingriff steht, um eine Spindel anzutreiben, soll so gestaltet werden, dass die Reinigung bzw. Desinfizierung mit einer entsprechenden Flüssigkeit problemlos durchgeführt werden kann. Erfindungsgemäss wird zum Schutz gegen Eindringen von Reinigungsflüssigkeit zumindest ein Teil der Stossflächen des Gehäuses durch Dichtelemente (14, 26, 28, 37) abgedichtet. Das Flanschrohr (23) ist gegenüber dem Getriebegehäuse (11) durch eine Rundschnurdichtung oder durch einen O-Ring abgedichtet. In das freie Ende des Flanschrohres (23) ist eine Führungskappe (25) fest eingesetzt, die gegenüber dem Flanschrohr (23) durch eine Dichtung, vorzugsweise durch eine Flachdichtung abgedichtet ist. Der erfindungsgemässe Doppelschneckenstirnradantrieb wird bevorzugt für Krankenhausbetten und Pflegebetten verwendet.

Improvement in screw-rods

Dual drive electromechanical actuator with center output

Electromechanical actuators (EMAs) are provided that include an output disposed at a location that is axially central between two EM devices. The EMAs include either one or two motors and an output mechanism. The motors are adapted to be energized and are operable, upon being energized, to either generate torques about a first axis or drive forces along a first axis. The output mechanism is responsive to the torques or forces to translate along a second axis that is perpendicular to the first axis

Replaceable threaded sleeve for gate type valves

Miner's drill.

Synchronized double action screw jack