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| Number | Title | Issue Date |
| 8156834 | Linear actuator having quick-release mechanism A linear actuator with a quick-release mechanism allows the unpowered, loaded linear actuator to immediately return to its initial position by operating a rotatable involute cam of the quick-release mechanism. The quick-release mechanism is connected with a remote m... | 04/17/2012 |
| 8113076 | Mechanical positioner for reclining seat assembly A mechanical linear actuator having a tubular member that is defined by a housing for rotatably and axially supporting a circular nut, a lead screw is mated to the circular nut so that it can move axially in and out of the tubular member. A torsion spring clutch bra... | 02/14/2012 |
| 8091444 | Transmission mechanism having deceleration function A transmission mechanism having a deceleration function includes a guide screw, a worm wheel set, an intermediary ring, an isolator and a passive sleeve. The worm wheel set is fitted onto the guide screw and includes worm wheel and plural claw arms. A spacing slot i... | 01/10/2012 |
| 8079279 | Support assembly for movement by means of coupling between threaded bar and nut with threaded through hole A modular support (7) with holes (10) for attachment screws is equipped with a through seat (7A) with axial stop (7B) for a nut (9) capable of being received and engaged in said through seat; the modular support (7) can be u... | 12/20/2011 |
| 8042417 | Actuator An actuator is described which comprises a rotatable actuator member (14, 114) and a lock arrangement (28, 128) operable to lock the actuator member (14, 144) against rotation, the lock arrangement (28, 128) comprising an axially movable ... | 10/25/2011 |
| 7992456 | Anti-backlash nut, lead screw assembly and method A nut for a lead screw assembly, a lead screw assembly and a method for preventing backlash in a lead screw assembly are provided. The nut of the lead screw assembly includes a one-way clutch that permits relative motion of between two nut bodies in a first directio... | 08/09/2011 |
| 7992457 | Actuator device An actuator device (1) comprising an actuator housing (2), a driving motor (4) attached to the actuator housing (2), which driving motor (4) is provided with a motor spindle (28), the motor spindle (28) being displace... | 08/09/2011 |
| 7681470 | Threaded drive with resilient catch nut In a threaded drive having a load-bearing nut and a catch nut, for securing against a load-bearing nut, the catch nut is urged by a spring against an axial bearing face of the load-bearing nut. ... | 03/23/2010 |
| 7533591 | Fast-releasing controlling device of actuator for electric sickbed A fast-releasing controlling device of an actuator includes a clutching means, a turning means and a pulling means. The clutching means is accommodated within a base of the actuator, and includes a fixing base and a clutch. The turning means is accommodated within t... | 05/19/2009 |
| 7347115 | Linear actuator A rotary shaft and a rotation driven member are connected as to transmit motive power when the rotary shaft rotates relatively to the rotation driven member. A roller gets displaced to a first position where a frictional force with an outer race and the rotation dri... | 03/25/2008 |
| 7337690 | Leadscrew assembly with a wire-wound leadscrew and a spring-pin engagement of a drive nut to the leadscrew A leadscrew assembly includes a leadscrew having an elongated shaft with an outer lateral surface and a rotational axis, and a leadscrew thread formed of a thread wire helically wrapped in spaced-apart turns upon the lateral surface and affixed to the elongated shaf... | 03/04/2008 |
| 7198140 | Brake with field responsive material A controllable brake includes a rotor supported on one shaft end. The rotor is housed within a chamber containing a field controllable material which is acted upon by a magnetic field generator to change the rheology of the material and thereby impede movement of th... | 04/03/2007 |
| 7152496 | Screw nut assembly of linear actuation device A screw nut assembly of a linear actuation device, having a screw, a main screw nut and a safety screw nut is disclosed. The main screw nut and the safety screw nut engaged with the screw are operative to displace linearly along an axis of the screw. The safety scre... | 12/26/2006 |
| 7143661 | Leadscrew mechanical drive with differential leadscrew follower structure and brake A leadscrew mechanical drive includes a leadscrew having a leadscrew axis and a leadscrew thread with a nonzero leadscrew thread pitch. A leadscrew follower structure is engaged to the leadscrew. The leadscrew follower structure includes a first leadscrew follower a... | 12/05/2006 |
| 7134156 | Gas spring activated adjustable bed An adjustable bed including a stationary frame is supported above a floor. An articulated deck comprising head, seat, leg and foot deck boards hingedly joined together is spaced above the frame with connectors. The connectors include generally inverted U-shaped tube... | 11/14/2006 |
| 7100465 | Actuator An actuator includes an inner tube, an outer tube disposed over the inner tube in a manner such that the tubes reciprocate with respect to one another. A removably operably disposed ball screw having a ball nut thereon extends through the tubes, the ball screw havin... | 09/05/2006 |
| 7093312 | Single motor adjustable bed An adjustable bed including a stationary frame is supported with legs above a floor. An articulated deck comprising head, seat, leg and foot deck boards hingedly joined together is spaced above the frame with connectors. The connectors include generally inverted U-s... | 08/22/2006 |
| 6959620 | Device for balancing of a radial threaded spindle eccentricity of a spindle drive A device for balancing eccentricity of a spindle drive (1) to avoid blocking of the spindle drive during lifting movement of a platform (2), in which the platform is mounted on several axiparallel spindles (G1; G2; G3; G4) b... | 11/01/2005 |
| 6928895 | Ballscrew locking nut A ballnut assembly is provided in which a locknut (20), which is normally unloaded becomes loaded in the event of failure of a primary load path. This loading causes relative motion between locking nut (24) and the threads of a shaft (8) such th... | 08/16/2005 |
| 6928894 | Compensated actuator with optimized power An actuator combining mechanical and hydraulic forces includes a cylindrical body and a piston that can slide relative to the cylindrical body. The piston and the cylindrical body are connected by a mechanical system for transmitting mechanical power that constitute... | 08/16/2005 |
| 6907961 | Apparatus and method for retarding translation between two bodies A rod brake, and a method, including an elastic device, such as a coil spring, array of split rings, or an elastic sleeve, that engages one or more grooves in a cylindrical surface to restrain the rod from longitudinal movement relative to another body, and wherein ... | 06/21/2005 |
| 6875006 | Threaded drive The invention relates to a screw mechanism comprised of a screw shaft (1), a screw nut (2) and rolling bodies. When the screw mechanism is subjected to a high static load, the forces are transmitted from the screw shaft (1) to the screw nut (... | 04/05/2005 |
| 6758110 | Mechanical lock mechanism and injector head using the mechanism This injector head 1000 comprises a plunger 20 capable of reciprocating in a direction of movement of a piston 1a in a syringe 1, a plunger drive 500 for converting rotary motion of a plunger motor 2 to linear motion ... | 07/06/2004 |
| 6722485 | Force-limiting rotary lock A force-limiting rotary lock (20) for a shaft (21) mounted on a housing (22) for rotational and axial movement relative thereto, broadly includes a lug member (28) provided on the shaft, and a pawl (51) mounted on the housing. The ... | 04/20/2004 |
| 6700717 | Scanning apparatus and locking device of scanning apparatus The present invention provides a locking apparatus for switching between a lock state and an unlock state of a sliding device in a system. The system has a plug and a socket. The sliding device has a shaft. The locking apparatus has a sliding member, a sp... | 03/02/2004 |
| 6685382 | Screw actuator A screw actuator comprises a rotatable input member and a non-rotatable primary output member, wherein the input member is provided with a screw thread formation within which a plurality of spherical members are received to provide a ball screw coupling b... | 02/03/2004 |
| 6647814 | Selective drive mechanism A selective drive mechanism comprises a driven drive shaft (2), a drive nut (4), locking means (6) and an operable control arm (10). The drive nut (4) is disposed about the drive shaft (2) and is adapted to be selectively driven by the drive shaft (2). Th... | 11/18/2003 |
| 6581486 | Integrated circuit tester having a fail-safe mechanism for moving IC-chips An integrated circuit tester includes a fail-safe mechanism for moving an integrated circuit chip between an initial position where the integrated circuit chip is inserted into the tester, and a test position where the integrated circuit chips is actually... | 06/24/2003 |
| 6520580 | Lumbar support controlling apparatus for a car seat A controlling apparatus for a lumbar support of a car seat for supporting the lumbar region of a driver. The controlling apparatus includes a housing disposed within the seat and having a jaw at one end. A sleeve having a groove in engagement with the jaw... | 02/18/2003 |
| 6497652 | Linear transmission member driving unit for endoscope with rotation stopper mechanism A rotary driving member at the tip end portion is rotated by a motor through a linear transmission member, and the rotation of this rotary driving member is converted into a straight-line motion to thereby enable a movable lens for making the observation ... | 12/24/2002 |
| 6497539 | Clamping device for a machine tool A clamping device for a machine tool that is securable to a work table of the machine tool. The machine tool typically has a work table and a saddle. The worktable is slidably mounted to the saddle. An elongated table screw is carried by the work table an... | 12/24/2002 |
| 6467363 | Ball screw actuator locking mechanism The present invention provides an improved standby locking mechanism (20) that is adapted to be used with a ball screw actuator. The actuator has a rotatable screw shaft (21) and has a primary nut (22) mounted on a movable member (23) and threadedly engag... | 10/22/2002 |
| 6453761 | Direct attachment electric motor operated ball nut and screw linear actuator A linear actuator comprises a ball screw carrying an axially restrained rotatable ball nut driven by an electrically energized motor. An enclosing motor housing has front and rear walls with axially aligned openings for passing the ball screw. The motor h... | 09/24/2002 |
| 6418807 | Stabilizer for ball screw actuator A stabilizer for a ball screw actuator of the type having a housing, and externally threaded lead screw and a drive nut movable along the lead screw in which the stabilizer includes a first member rotationally fixed but movable linearly relative to the cy... | 07/16/2002 |
| 6401557 | Screw actuator A screw actuator comprising first and second relatively rotatable members, a screw thread formation in the first member including a helical groove, spherical elements carried by the second member and in rolling engagement in the helical groove to form a b... | 06/11/2002 |
| 6279411 | Linear drive mechanism A linear drive mechanism comprising a moveably guided output member (12). The output member (12) is guided on a supporting device (15) in a supporting area (13) of the housing (1). A position determining device (54) protrudes laterally from the output mem... | 08/28/2001 |
| 6240797 | Linear actuator with anti-reverse-rotation mechanism A linear actuator includes two axially opposed bearings with built-in one-way clutch assembled in a housing member with respective outer races secured to the housing member such that respective directions in which inner races of the bearings are locked ag... | 06/05/2001 |
| 6237433 | Electromechanical actuator of the type having a screw-and-nut system An electromechanical actuator comprising a screw that is driven in rotation, a nut that is driven in translation by rotation of the screw, and a guide rod which is driven in translation by the nut, the actuator having a plurality of rollers interposed bet... | 05/29/2001 |
| 6202803 | Output load limiter An output load limiter is provided in an actuator to prevent excessive drive torque from being transmitted from a primary mover through the actuator. The actuator includes a housing, an output shaft mounted for rotation in the housing about an axis, and a... | 03/20/2001 |
| 6196361 | Compact electric asymmetry brake An improved braking apparatus having a jaw type clutch coupled to an electrical solenoid through a ball spline mechanism provides significantly greater braking capacity in a given volume than other types of braking devices. The ball spline is configured t... | 03/06/2001 |
