Class 192/141 - Screw

Subclass of Class 192 - Clutches and power-stop control
Definition: Stop mechanisms in which control is by a screw operated
No. of patents: 91
Last issue date: 11/20/2007

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Number	Title	Issue Date
7298108	Control system for electric actuator A driver comprises a direction-switching means which switches a rotation direction of a rotary driving source based on a direction instruction signal, a current amplifier/limiter which converts a voltage outputted from the direction-switching means into a correspond...	11/20/2007
7243574	Rotating regulating device A rotating regulating device for the rotation and/or linear displacement of an actuating element of a valve, throttle, blowout preventer or similar, in particular in the field of gas or oil supply, exhibits a spindle drive and a drive train rotationally driving the ...	07/17/2007
7211971	Linear actuator A linear actuator having a housing, a plunger slidably mounted to the housing between an extended and retracted position, and an electric motor drivingly connected to the plunger to move the plunger between its extended and retracted positions. A motor circuit contr...	05/01/2007
7204291	Modular lid and actuator for underwater pool cover drum enclosure The present invention is a modular lid system for an underwater swimming pool cover or other underwater enclosure. The modular lid has a rigid lid portion which has an overall buoyancy such that the lid portion closes the enclosure underwater by force of gravity. Th...	04/17/2007
7197955	Gearbox shift actuator A vehicle gear box shift actuator and apparatus including the same. The actuator includes a lead screw; a drive nut threaded on the lead screw; a plunger; a first spring disposed between the drive nut and a first end of the plunger; a second spring disposed between ...	04/03/2007
7140151	Electro-mechanical actuator An electro-mechanical actuator for a window lift mechanism including a plurality of motors for driving an output shaft. The actuator may be incorporated into a window lift mechanism including a dual rack and pinion assembly, for driving the pinions along the racks. ...	11/28/2006
7100870	Jam tolerant electromechanical actuation systems and methods of operation In a vehicle, having a fixed supporting structure and a load movable relative thereto, a jam tolerant actuating system, a method for controlling this system including: Locating a physical coupling/decoupling mechanism between the load and an actuator assembly as clo...	09/05/2006
7066041	Linear actuator A linear actuator useful for adjusting furniture includes a housing (1) with a reversible electric-motor (2) which, via a transmission (11, 13), drives a spindle (4) with a force absorbing bearing (16). On the spindle there is a nu...	06/27/2006
6974107	Thrust reverser system actuator having an integral torque limiter A thrust reverser system actuator assembly is provided that includes a torque limiter to limit the number of torque that may be applied to the actuator assembly. The actuator assembly includes an actuator and a torque limiter assembly. The actuator is adapted to rec...	12/13/2005
6938415	Hydraulic/pneumatic apparatus An invented fluidic (hydraulic/pneumatic) actuation system is described wherein bidirectional, hydraulic/pneumatically driven elements of multiple components in a common hydraulic/pneumatic circuit inherently provide increases in pressure upon reaching mechanical en...	09/06/2005
6938531	Reciprocal-movement power tool A reciprocal-movement power tool includes a movable blade reciprocally movably provided on a main body. A receiving plate that supports an angle iron to be cut is supported on the main body at a position in front of the movable blade. The movable blade is fixed on a...	09/06/2005
6938312	Work pallet A work pallet that is arranged to be simple in construction capable of machining five faces of a work by rotating it around the axis of rotation. A work pallet (4) comprises a base body (5) detachably fixed to the table (3) of a machine-tool (	09/06/2005
6879065	Linear actuator An improved linear actuator incorporates a DC motor whose stator is secured to a frame is provided for. To improve operational longevity and reliability of a linear actuator, the improved actuator includes a retention clutch and an axial load limiter. An axially con...	04/12/2005
6808056	Stop apparatus and method for gear actuators A stop apparatus for a gear actuator includes a traveling stop nut that has adjustable positions and travels on a screw on an input shaft. The stop nut is mounted to threadably travel on the stop screw. A stop guide is attached to the stop screw and prevents rotatio...	10/26/2004
6739372	Overhead door locking operator A system for raising and lowering a sectional overhead door between an open position and a closed position including, a counterbalance system adapted to be connected to the door, an operator motor assembly mounted proximate to the sectional overhead door in the clos...	05/25/2004
6546825	Actuator There is described an actuator comprising an outer tube and an inner tube. In the actuator there is provided a spindle co-operating with a bushing for creating the displacement of the actuator by means of a motor. In order to establish an end stop in a se...	04/15/2003
6513398	Electromotive adjustment assembly An electromotive adjustment assembly, includes at least two spindles disposed in parallel spaced-apart relationship, and a motor unit coupled in driving relationship with the spindles for operating the spindles....	02/04/2003
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
6321611	Linear actuator travel limit apparatus A linear actuator utilizing limit switches to implement reliable and effective travel limit functions. The actuator having a robust construction, lower part count, smaller dimension, and lower assembly cost....	11/27/2001
6101889	Ball screw and nut linear actuator assemblies and methods of constructing and operating them A ball screw and nut linear actuator has a motor and a ball nut and screw assembly in side by side disposition. Gearing connects with the motor shaft to drive the screw and a housing for the gearing and ball nut and screw assembly includes an elongate hou...	08/15/2000
5811139	Device for fixing a ball screw/nut mechanism safe from turning In a device for fixing a ball screw/nut mechanism, including a ball screw and a ball nut, safe from turning. The ball screw/nut mechanism generates a linear movement to displace a first subassembly until it rests on a second subassembly. A blocking device...	09/22/1998
5809833	Linear actuator A linear actuator includes a motor having a rotatable output shaft, a lead screw having a worm gear thread, a forward end and a rear end, a worm gear drive train connected between the motor output shaft and the lead screw to convert the rotary motion of t...	09/22/1998
5673593	Overrunning nut for linear actuator A simple, inexpensive and reliable screw type linear actuator includes a drive screw, a nut disposed thereon, and a reciprocating drive tube radially disposed over at least a portion of the drive screw. A first clutch member has a first clutch surface bea...	10/07/1997
5635808	Method and system for controlling the motion of a rotary drive of a rotary index table assembly Method and system are provided for controllably driving a rotary drive of a rotary index table assembly utilizing a PLC which receives various sensor signals including a feedback signal from a resolver to generate a reference central signal which, in turn...	06/03/1997
5542744	Non-adjustable linear drive for articulated furniture A linear drive for articulated furniture having pre-determined extended and retracted positions. These devices heretofore have been designed to be adjustable, but customer adjustment frequently causes costly damage to the drive and furniture. The drive in...	08/06/1996
5503045	Drive assembly for controlling a powered device A drive assembly for a valve includes a motor, a transmission which is coupled to the motor and the valve, and a manual drive unit having a shaft which is arranged to be driven by a handwheel. The shaft has a small amount of axial play and is provided wit...	04/02/1996
5461935	Slip clutch linear actuator A linear actuator of the present invention includes a hollow drive tube. A slip clutch having front and rear camming surfaces is housed in the tube for rotation about an longitudinal axis. The slip clutch is axially fixed in the tube by a shoe. The slip c...	10/31/1995
5402984	Jack mechanism having positive stop means for its crank handle A jack mechanism having a crank handle that drives a linear motion control all nut and threaded screw. Two rods are included to provide a positive stop in each direction of the jack's limit so as to prevent overrun of the mechanism....	04/04/1995
5351797	Retraction system for a power tool drive spindle A system for retracting the drive spindle of a power tool includes a drive shaft which has a spline portion and a threaded portion. During normal operation, the drive spindle is rotated by interconnection of a drive gear with the splined portion of the dr...	10/04/1994
5345835	Fitting for shutting off a flow A fitting, in particular for shutting off a flow, includes a housing. A fixed threaded part is axially displaceable and fixed against relative rotation in the housing. A rotatable threaded part is axially resiliently and rotatably supported in the housing...	09/13/1994
5346045	Electrically powered actuator A linear actuator has reversible electric motors driving a screw-threaded shaft engaging a roller nut. A tubular housing attached to the nut has at its remote end an internal seating member and load securing lugs. An hydraulic shock absorber unit, providi...	09/13/1994
5319991	Motor coupling with angular compliance A reversible drive system is provided that is particularly adaptable to low-power drives in which precision mechanical control must be obtained with the lowest possible cost and the highest reliability. The drive is described as incorporated in a lead scr...	06/14/1994
5299678	Limit switch mechanism for garage door opener An adjustable limit switch mechanism for controlling the operation of an electric motor of a garage door opener over a selected range of movement including a motor driven threaded shaft supporting at least one switch actuator which is adjustably positiona...	04/05/1994
5255882	Setting device with a nut controllable by a spindle A setting device for the control surface of a projectile, which includes a drivable spindle or actuated screw which is screwed through the intermediary of a nut which is secured against rotation. Included are end stops for limiting the axial extent of dis...	10/26/1993
5231888	Ball screw device with internal motors A ball screw device with internal motors comprises a shaft provided with a ball screw groove and a ball spline groove, a ball screw nut threaded on the shaft with balls interposed therebetween, a ball spline nut threaded on the shaft with balls interposed...	08/03/1993
5230416	Automatic stop device with sliding yoke for electric motor The device comprises at least one lead screw (2) driving a sliding yoke (23) whose guide bar (22) is mounted on a rocker arm (19). The lead screw actuates a switch (27) by means of a cam (28) via the sliding yoke. A deliberate action on the rocker arm mov...	07/27/1993
5145041	Motion converting mechanism A motion converting mechanism comprising a feed member provided with a screwed portion, a screw nut member engaging with the screwed portion of the feed member, a support member rotatably supporting the feed member and the screw nut member, a single drive...	09/08/1992
5134731	Adjustable bed having adjustable height legs with synchronization feature An adjustable bed comprises a head end, a foot end, and a planar mattress portion extending therebetween. The head end and foot end feature a drive screw and nut housing assembly. Each head end and foot end features tubes which are slidingly received with...	08/04/1992
5117701	Screw-and nut type member for transmitting rotary motion A transmission member includes a driving shaft (60) actuated by a control shaft (9), and a driven shaft (3) driven in rotation by a plate (61) provided with a driving thread and a driven thread. The driving shaft is provided with a thread that engages in ...	06/02/1992
5111925	Device for automatically halting an electric motor after a certain number of revolutions A device in which a sliding-gear nut is displaced on a threaded rod, one of these elements being driven in rotation by the motor to be controlled, the sliding-gear nut actuating a switch when it arrives at the end of its travel after a determined number o...	05/12/1992

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Class 192/141 - Screw