Class 74/89.31 - Shaft and nut driven

Subclass of Class 74 - Machine element or mechanism
Definition: Subject matter in which the shaft and nut are simultaneously
No. of patents: 29
Last issue date: 02/12/2008

Number	Title	Issue Date
7329199	In-line actuator apparatus and method An actuator having an electric motor with a rotor shaft engaged with a gear set within a housing is provided. As an example, the gear set may be a planetary gear set. The planetary gears are engaged with a disk. The disk is fixed to a shaft rod or other force transm...	02/12/2008
7231842	Actuating device An actuation device for adjusting a powered control device opposite the adjusting direction. The actuation device comprises an actuation element axially displaceable in a housing by a feed device at least in the adjusting direction. The actuation device includes an ...	06/19/2007
7192223	Servo motor die tapping unit A servo motor driven tapping unit for in die installation has a tap holder pitch adapter assembly mounted for removal while the unit is in the die to facilitate tap and pitch adapter replacement. In one embodiment, the tap holder pitch adapter assembly extends trans...	03/20/2007
7047833	Feed unit In a feed unit of a rod-type actuating element that is arranged in a housing (2) and guided for axial displacement relative to the housing (2), the feed unit further being a drive motor (4) that effects the displacement of the actuating element ...	05/23/2006
7001117	Rotary cutting apparatus A rotary cutting apparatus comprises a rotary shaft assembly having an axis and adapted to hold a cutting tool coaxial with the axis and, a feed mechanism for moving the cutting tool held by the rotary shaft assembly along the axis of the rotary shaft assembly. The ...	02/21/2006
6968752	Drive shaft moving device A drive shaft moving apparatus of the present invention includes a drive shaft 1 with a screw groove 3 formed in spiral shape, and a nut 5 fitted around the drive shaft 1 and being rotatably supported on a main flame 15 so as to al...	11/29/2005
6908405	Pulley width adjusting device for continuously variable transmission A ball screw mechanism that can drive a movable pulley disk in an axial direction includes a screw cylinder and a nut member. A stopper pin is inserted through the screw cylinder from one end surface of the circumferential wall of the screw cylinder to the other end...	06/21/2005
6808052	Torque transfer device with double ball screw clutch actuator A torque transfer mechanism is provided for controlling the magnitude of a clutch engagement force exerted on a multi-plate clutch assembly that is operably disposed between a first rotary and a second rotary member. The torque transfer mechanism includes a clutch a...	10/26/2004
6374693	Variable steering ratio steering system A variable-ratio steering system includes a steering shaft connected to a manually-operated handle, a ball nut engaging with the steering shaft and a ball-bearing-screw mechanism converting rotary motion of the steering shaft into axial displacement of th...	04/23/2002
6349606	Reduced backlash translating system Apparatus embodying the invention includes first and second motors coupled to a carriage assembly for moving the carriage assembly back and forth between first and second end points. The first motor is for developing a force to drive the carriage in one d...	02/26/2002
6125731	Feeder for an industrial machine, particularly a turret punch press, and an industrial machine utilizing the same A ball screw spline shaft 41 is driven for rotation by a drive motor 53 provided at least on one end thereof. When a feeder ball nut 61 moves in response to the rotation of the ball screw spline shaft 41 from one end of the ball screw spline shaft 41 towa...	10/03/2000
6095476	Adjustable television stand An adjustable television stand is provided including a base fixedly positioned on a recipient surface. Also included is an intermediate portion slidably situated on the base along a vertical axis. An upper support is rotatably coupled to the intermediate ...	08/01/2000
5865272	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 fi...	02/02/1999
5782151	Workpiece transfer apparatus An apparatus for transferring workpieces to and from the chuck of a machine tool. A gripper arm is mounted to the machine frame for selectively axial and rotational movement on a shaft having helical and longitudinal threads on the surface thereof. A firs...	07/21/1998
5488880	Two-speed linear actuator driven by two motors A two-speed linear actuator with high thrust and a high speed of translation for a machine, particularly a bending press. A linear actuator for a machine, particularly a bending press, having first and second bodies (2, 4) mounted for sliding relative to ...	02/06/1996
5311790	Drive system A drive system comprises a pair of racks provided in a first direction, a pair of travellers, each of which is capable of moving in the first direction alongside each rack, a connecting member provided in a second direction perpendicular to the first dire...	05/17/1994
5094118	Splined ball screw assembly having a nested structure A splined ball screw assembly having a nested structure is provided. A hollow shaft extends into an outer sleeve and a center shaft extends into the hollow portion of the hollow shaft. A ball screw structure is provided at either side of the outer and inn...	03/10/1992
5069081	Multi-mode splined ball screw assembly A multi-mode splined ball screw assembly includes a first shaft, a hollow second shaft and a hollow third shaft. The first shaft extends into the hollow second shaft and a ball spline structure is provided between the first and second shafts so that they ...	12/03/1991
4926709	Motion transmitting systems for machinery & machine tools Motion transmitting systems for machinery and machine tools wherein the combination of rotary and linear movement of a spindle is utilized to perform tasks especially drilling, reaming, tapping, and punching of metal. The tool supporting spindle is longit...	05/22/1990
4916963	Moving table unit There is provided a moving table unit having a table which is attached to rectilinear guide devices on both sides of the legs of a substantially U-shaped bed, a first motor unit with a ball screw which is attached to the upper side of the bottom of the be...	04/17/1990
4821596	Rotator A rotator comprises a gear housing which has a lower attachment for fitting the housing to the top of a mast, and which has extending therefrom a tube which can be rotated about its longitudinal axis relative to the gear housing by means of a gear therein...	04/18/1989
4799644	Actuator activating on-off valves The invention concerns an actuator for the operation of on-off valves. Said actuator includes a supporting body (1) in which there is transversally disposed at least one pneumatic cylinder (8, 9) which is capable of activating in two directions, a rack (7...	01/24/1989
4715241	Mechanical linear drive system A mechanical linear drive system for generating a defined linear movement of a driven force transfer element (16) has a spindle drive, the threaded spindle (7) of which is supported in a profiled tubular structure (1) of stable shape, closed off at the en...	12/29/1987
4703666	Linear drive device The linear drive device has two motors (M1,M2) firmly arranged relative to each other, one driving the nut (10), the other driving the screw spindle (20), whereby the nut (10) driven by motor (M1) is mounted axially firmly...	11/03/1987
4614128	Linear drive device with two motors The linear drive device operates with two motors which are mounted on the outer ends of two housing parts which are locked against rotation and can be telescopically moved into each other. A motor drives a nut over a driving sleeve. The other motor drives...	09/30/1986
4573566	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 ...	03/04/1986
4494025	Linear drive device with two motors The linear feed device is suitable for extremely slow feed rates or extremely small feed steps. It works with two motors (M1, M2) which drive a nut (16) and a screw spindle (2) via an intermediate drive (12-15; 22-25). The intermedia...	01/15/1985
4465091	Improved self-grinding valve An improved, motorized Lunkenheimer valve is provided having two independently actuated drive means for operating the valve, one of which moves the valve stem and disc longitudinally along the axis of the stem and the other of which rotates the stem and d...	08/14/1984
3949626	Differential gear system and actuator assembly A differential gear system is disclosed for selectively transmitting power from one of two alternative power sources and which is particularly suited for use in actuating assemblies. The differential gear system includes an input gear rotatable about a sl...	04/13/1976

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Class 74/89.31 - Shaft and nut driven