Class 74/424.89 - Non-recirculating rolling elements

Subclass of Class 74 - Machine element or mechanism
Definition: Subject matter including elements between the screw and
No. of patents: 32
Last issue date: 02/21/2006

Number	Title	Issue Date
7000495	Actuator device with intermediate rollers Actuator device comprising a support (2); a longitudinal drive rod (8), part of the rear end (9) of which is mounted and rotates inside the support, and of which a front end section (17) has an external screw thread (18) and on its...	02/21/2006
6925901	Device for converting rotational movement into axial movement A device for converting rotational movement into axial movement includes planetary rollers driven by a drive shaft projecting from a drive device and maintained peripherally at a same distance, in addition to a push body axially displaced by the planetary rollers. T...	08/09/2005
6494033	Sequentially operated actuator with brake arrangement An actuator comprising, a first, rotatable member arranged to be driven by a motor, a sleeve, said first member cooperating with said sleeve such that rotation of the first member at a given speed relative to said sleeve causes the sleeve to be translated...	12/17/2002
6370978	Apparatus for converting a rotary motion into an axial motion An apparatus for converting a rotary motion into an axial motion, is used as overload protection; the force transmitting elements of the conversion apparatus, in the form of a threaded spindle, a nut and/or the intervening planetary rollers and roller bod...	04/16/2002
6158557	Roller spindle assembly and brake actuator incorporating the same The invention relates to a roller spindle assembly (2) having a spindle rod (4) and a spindle nut (6) and roller bearings (10). The roller bearings are journalled between the spindle nut (6) and the spindle rod (4). The spindle rod (4) and the spindle nut...	12/12/2000
6089303	Control wand for coverings for architectural openings A system for reversibly rotating a shaft for operation of the control system in a covering for an architectural opening includes two relatively linearly moveable members at least one of which has a low friction component engaging a helical path on the oth...	07/18/2000
6084326	Actuator A ball screw of an actuator is inserted through a displacement member. Driving-side axial magnetic patterns and driving-side circumferential magnetic patterns are formed on an outer circumference of the displacement member. The ball screw and the displace...	07/04/2000
5885057	Method and apparatus for using nucleate steam bubbles in steam and/or gas compression A turbine apparatus having a stator and a rotor mounted for rotation relative to the stator. The stator has at least one groove facing the rotor and the rotor has at least one groove facing the stator, the direction of each of the rotor grooves intersecti...	03/23/1999
5685390	Electrically-operated power steering apparatus An electrically-operated power steering apparatus comprises a steering shaft, a rack shaft capable of linear movement for turning a steering running wheel a, rack-pinion gear for coupling the steering shaft with the rack shaft, and a ball screw mechanism ...	11/11/1997
5638925	Jerk arresting mechanism The present invention relates to a jerk arresting mechanism to prevent the back rests of office chairs from unexpected movement such as rebounding and impacting upon users in an undesirable fashion. More generally, the mechanism described positively arres...	06/17/1997
5572907	Actuator assembly in handle-bar An actuator assembly to produce mechanical power for a function in a bicycle or any other handlebar-steered device, which actuator assembly comprises a twisting part on the handlebar tube, a part to transmit the twisting motion into the tube from its open...	11/12/1996
5483929	Reciprocating valve actuator device A valve activation device having a linear reciprocating cam shaft having longitudinally extending cam grooves that are engaged by captive cam followers which oscillate up and down in response to sideways reciprocation of the camshaft for activating intake...	01/16/1996
5456330	Return-to-neutral mechanism of rear wheel steering device A return-m-neutral mechanism for a rear wheel steering device for an electronically controlled four wheel steering vehicle, in which a spring provided in the return-to-neutral mechanism does not come into operation within a predetermined steering angle ra...	10/10/1995
5450988	Powered caulking gun A cordless electric powered caulking gun for pressurizing a tube of highly viscous substance includes a ball drive rod having a helical thread and a keyway, an electric motor and gear reducer coupled to a spur gear keyed to the ball drive rod, a cylindric...	09/19/1995
5358265	Motorcycle lift stand and actuator Disclosed is an improved automatically actuated motorcycle lift stand. The stand comprises upper and lower stand units on each side of the motorcycle. This configuration enables independent raising of the motorcycle when resting on either side, as well as...	10/25/1994
5205179	Speed changing device A speed changing device for a gear box, particularly for a toothed change speed gear of a motor vehicle in which a gear wheel, freely rotatable on a driven shaft can be coupled with the driven shaft by means of an axially displaceable claw ring and a toot...	04/27/1993
5077938	Reversible screw-and-nut actuating device and sliding door equipped with such a device A reversible-screw- (3) and-nut (14) actuating device is connected by a coupling (12, 13) to a sliding door, the screw (3) itself being connected to a motor. A carriage (11) which can move along the screw comprises a lock (16, 22, 28, 24) for locking this...	01/07/1992
5028217	Apparatus for converting rotational movement into reciprocating lifting movement An apparatus for converting rotational movement into reciprocating lifting movement or vice versa, compriss a bearing body that incorporates a first, cylindrical wall section with first guide grooves, a rotary element that is supported on the bearing body...	07/02/1991
4947070	Control apparatus Control apparatus of the kind disclosed in UK patent specification Nos. 2,073,887 and 2,114,717, i.e. in which a movable operating member, arranged to control associated apparatus such as an aircraft engine, is coupled to an electric stepper motor, the mo...	08/07/1990
4945778	Fluid-power device with rollers A fluid-powered actuator having a body with an interior helical groove, a drive member supported for rotary movement relative to the body, and a carrier reciprocally mounted within the body. In a first embodiment, the carrier rotatably retains first and s...	08/07/1990
4900059	Tilting and telescope traveling steering column arrangement A tilting and telescope traveling steering column arrangement for an automotive vehicle. The telescope traveling mechanism of the steering column arrangement includes a pluarlity of balls which are rotatably fixed on the peripheral surface of a ring membe...	02/13/1990
4856356	Screw jack The nut structure (3) of a screw jack has ball bearing units (4, 5, 6) the middle one (5) of which engages from one side and the two outer ball bearing units (4, 6) engage from the opposite side on the same plane of action into the thread (2). Thus the nu...	08/15/1989
4760635	Method of forming a helical ball screw member A method of forming a ball screw member from an elongated workpiece having an outer cylindrical surface, as well as the ball screw member formed by the method. A helical ball screw thread is machined on the outer cylindrical surface, the helical ball scre...	08/02/1988
4723486	Device for automatic angular positioning of a plurality of indexable rotary machine elements, and a machine comprising a device of this type, especially a postal franking machine A device for automatic angular positioning of indexable rotary elements, ecially for postal franking machines and the like comprises a common indexing-control gear-wheel rigidly fixed to a cylindrical indexing-control rod, and an indexing-control rotatin...	02/09/1988
4715262	Ballistic tolerant dual load path ballscrew and ballscrew actuator Ballscrew actuators are well known for use as a primary flight control actuator for operating a flight control surface. The operation of the ballscrew actuator is critical to the success of an aircraft mission; however, when the actuator is subject to bal...	12/29/1987
4590816	Ball screw actuator A fluid-powered differential ball screw actuator with torque-transmitting helical ball-carrying races. The actuator includes a body with an interior first ball race and first and second ends; a first stop stationary with respect to the body for engaging a...	05/27/1986
4349284	Assembly for moving printing means of a printing machine A printing office machine in which a movable print head is driven by a device comprising a fixed, mounted lead screw and a cooperating nut member connected to an electric motor. The nut member is rotatably mounted in a carrier frame and comprises an inner...	09/14/1982
4343200	Reversing attachment for diamond thread screw A reversing attachment adapted to be applied to a diamond thread screw of the type having intersecting thread grooves, for effecting reversal in the axial direction of travel of a follower associated with the screw, the reversal occurring at any one of a ...	08/10/1982
4259949	Anti-friction screw and nut assembly A guiding device for orthosis, comprising an anti-friction screw and nut assembly, in which the nut comprises two interconnected nut portions, which are rotatable but not axially displaceable relatively to each other, each nut portion having an axial bore...	04/07/1981
4229983	Ball-and-screw power transmission device A ball-and-screw power transmission device includes a screw or a threaded rod on which power to be transmitted is applied, an outer cylindrical member disposed around the screw, and at least one ball or spherical member located in contact between the adja...	10/28/1980
4052906	Mechanism for controlling the motion of the weft carrying grippers in looms In a mechanism for controlling the motion of the weft carrying grippers in looms, the inlet movement is the rectilinear reciprocating motion of the small end of the final connecting rod of a linkage operated by the main shaft of the loom, and the outlet m...	10/11/1977
4023433	Power transfer The power transfer of the present invention employs a driver having a medial section which includes a plurality of continuous, helical grooves and a plurality of axially aligned transfer material return flow paths. The medial section terminates at each en...	05/17/1977

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Class 74/424.89 - Non-recirculating rolling elements