Matches 1 - 50 out of 124 1 2 3 >
Match Document Document Title
7587954 Ball screw  
Ball screw having a spindle nut ( 2 ) arranged on a spindle ( 1 ), together with balls ( 3 ) which are arranged in a series and are capable of rolling in a helical ball track ( 4 ), the helical...
7568993 Planetary gear train  
A planetary gear train having planetary gears ( 8 ) which are rotatably mounted on a planet carrier ( 18 ) and are in toothed contact with an internally toothed ring gear ( 14 ) and a sun gear ( 4...
7562596 Fixed torque preload piece  
A fixed torque preload piece is positioned between two nuts of a ball screw, the preload piece is formed with through hole located in an axial direction of the two nuts for receiving at least two...
7506557 Anti-backlash nut  
An anti-backlash nut mechanism includes two segmental nuts composing a nut which are not separated when the nuts are disengaged from a male screw. An anti-backlash nut has a main nut and a trailing...
7474176 Sliding screw arrangement  
The present invention relates to a sliding screw arrangement ( 14 ) for transformation of the rotational movement of a threaded axis ( 13 ) into a linear movement of the sliding screw providing...
7458292 Catch nut  
A threaded drive has a threaded spindle having a longitudinal axis, a supporting nut which is in a screw engagement with the threaded spindle with a first clearance and which is rotatable relative...
7444894 Linear actuator with wear-resistant ceramic bushing  
An actuator including a threaded shaft and a carriage having a shaft engaging portion coupled to the threaded shaft. The carriage is moveable in a direction parallel to an axis of the threaded...
7337688 Two-part, low-backlash spindle nut  
Apparatus for screw transmission on a spindle comprising a nut having at least a first and second part with internal threads, at least one bore in the first and second parts, and at least one...
7219570 Long-span lead screw assembly with anti-backlash nut  
A lead screw assembly having a lead screw rotatable within a hollow tubular portion of a reinforcing rail. A nut engages with threads of the lead screw and is movable along the reinforcing rail....
7047783 Auxiliary adjusting device for rolling mill stand  
An auxiliary adjusting device for a rolling mill stand includes a adjusting shaft, a cylindrical member forming an adjusting spindle and having a first outer thread cooperating with the inner...
7017437 Ball screw  
In a ball screw drive comprising a spindle ( 1 ), a nut ( 3 ) surrounding the spindle ( 1 ), and balls ( 4 ) arranged between the spindle ( 1 ) and the nut ( 3 ), which balls ( 4 ) are in rolling...
6991414 Fastener assembly  
A fastener assembly for making it easier to tighten and loosen the fastener in confined work spaces. The fastener assembly includes a first end-cap member having a head member, a first boss-like...
6968753 Vibration-dampening base for ball-type lead screw of load port transfer system  
A vibration-dampening base for a ball-type lead screw of a load port transfer system is disclosed. A load port transfer system includes a vertical arm drive motor assembly, a ball-type lead screw,...
6914754 Head feeding mechanism  
A head lift body ( 42 ) with a head assembly ( 30 ) mounted thereon has a nut ( 45 ) engaged with a lead screw ( 41 ). The head lift body has an integral structure formed by resin molding with a...
6827310 Apparatus and method for fin actuation in a portable missile  
A fin actuator for a portable missile and a method of using the same. One aspect of the present invention includes a fin or wing actuator that meets very strict criteria to fit within a compact,...
6698301 Screw drive with rolling elements, and method of assembly  
A screw drive with rolling elements, optionally a ball screw drive, includes a screw spindle with a spindle axis and a double nut running on the screw spindle, with two separately formed single...
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...
6564660 Ball screw feed mechanism  
A casing of a ball bearing which holds a ball screw can be displaced on a supporting stand against urging force of a compression coil spring and a tensile coil spring. If vibration of the ball...
6520038 Drive device, for a movable part, in particular a hinged side window of a vehicle  
A drive device for a moveable part, in particular a hinged side window of a vehicle, with an actuating drive and with a threaded piece which is driven by the actuating drive and which meshes with...
6516680 Power steering apparatus  
A power steering apparatus comprises a rotary cylinder supported with its movement in the axial direction restrained and rotated coaxially with the steering shaft by the force a transmitted from...
6499369 Rack ball nut interface  
A ball nut drive assembly includes a ball nut having a bore extending axially therethrough, a ball screw extending through the bore of the ball nut and being cooperatively engaged with the ball...
6422101 Reinforced lead screw with springless anti-backlash nut  
An anti-backlash nut assembly is on a reinforced lead screw having a threaded lead screw rotatable about a central axis. A hollow, elongated reinforcing rail extends lengthwise of and surrounding...
6415673 Reinforced lead screw with anti-backlash nut  
An anti-backlash nut is assembled on a reinforced lead screw for bilateral motion lengthwise of the lead screw as the screw is rotated. A hollow, elongate reinforcing rail extends lengthwise of and...
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...
6318204 Helical gear  
Screw mechanism having a spindle (1) which is secured in the axial direction and has a spindle axis (1'), and a spindle nut (5) which is connected to a slide (7) which can be driven and is guided...
6311575 Device for connecting together a ball nut and moving member  
A device for slip-fittably connecting together a ball nut and a moving member moved by the ball nut includes a first connecting member fixedly attached to the ball nut. The first connecting member...
6311576 Anti-backlash nut for lead screw  
An anti-backlash nut includes a body having an axially-extending bore and internal threads for engaging a lead screw inserted into the bore. The internal threads are divided circumferentially into...
6267021 Anti-backlash device for a motorized optical component positioning stage  
An anti-backlash device for a positioning stage arranged for the precise movement of components composed of a pair of plates having rail receiving grooves, a pair of rails joining the plates and...
6142032 Adjustable anti-backlash nut assembly  
An anti-backlash nut assembly for translational movement along the axis of a leadscrew in response to rotational movement of the nut assembly relative to the leadscrew. The nut assembly comprises...
6119541 Methods for adjusting a lead screw nut and a nut for adjustably engaging a lead screw  
An adjustable nut for mounting a movable working assembly to a lead screw having a longitudinal axis and a thread, and methods for adjusting lead screw nuts. In one embodiment, the adjustable nut...
6085605 Actuator for linear movement  
6053065 Spindle drive  
5911789 Linear actuator for motor vehicle steering column  
A linear actuator including a socket on a first element of a motor vehicle steering column, an expandable nut loosely disposed in the socket, and a screw shaft rotatably supported on a second...
5839321 Backlash compensating assembly  
An assembly that automatically compensates for backlash. The assembly includes two nut portions engaged to prevent relative rotation but permit relative movement in an axial direction. A sleeve is...
5697252 Preliminary thrusting mechanism for a screw device  
A preliminary thrusting mechanism for a screw device serves to achieve not only constant position type preliminary thrusting but also constant pressure type preliminary thrusting. The preliminary...
5676019 Nut assembly using partial nuts to limit harmonic error  
A nut assembly intended for use with a lead screw in precision movement devices for compensating for harmonic error from the lead screw by utilizing one or more partial nuts which are opposed along...
5644951 Feed screw apparatus and precise positioning and fine feed system  
A feed screw apparatus comprises a fixed member, a feed screw shaft rotatably supported to the fixed member, a nut mounted to the feed screw shaft and a movable member attached to the nut, wherein...
5634373 Rotational to linear movement actuator with limiter  
An actuator converts rotational movement to linear movement and at the same time transmits a limited linear force without requiring slip clutches or the like. The actuator has an electric motor in...
5511438 Positioner  
A positioner includes a pressurizer for pressurizing an interface between a feed screw and a feed nut, and a pressure control unit for controlling pressurization so that the extent of...
5501118 Ball nut and screw assembly with preload retaining ball return tube clamp  
A ball nut and screw assembly has a ball screw mounting a nut assembly comprising a pair of ball nuts with the respective grooves of the screw and nut defining a pair of ball train accommodating...
5492030 Methods of making ball nuts for preloaded ball nut and screw assemblies  
A method of making ball screw and nut assemblies, and the products which result, wherein the nut is provided with a deformable wall portion of decreased compressive strength interjacent the ends of...
5448438 Head actuator having spring loaded split nut  
A magnetic tape head actuator comprising an actuator motor having a threaded output shaft and a bracket for holding a magnetic tape head. The bracket includes two spaced apart supports that have...
5367915 Automatic pressure control device for a ball screw  
Varying fluid pressure varies the thickness of an elastic spacer between ball nuts of the ball screw. The spacer thickness determines opposed axial forces applied to the ball nuts. During a...
5181429 Headlamp positioning device  
A headlamp positioning device having a stepping motor and a sensor for detecting loss of steps in the motor. An electronic controller operating in open-loop with the motor automatically reinitiates...
5094119 Flexible ribbed, no-backlash ball nut  
A ball screw assembly (10) includes a ball nut (12) and a lead screw (14). The ball nut (12) has a construction which provides both a flexiblility comparable to that achieved with a coil spring...
5036720 Screw-nut feed mechanism  
A screw-nut feed mechanism for effecting axial displacement of a movable member on a stationary member in accordance with rotation of a feed screw shaft mounted on the stationary member. The feed...
5025676 Screw adjustment mechanism with pre-set backlash  
A screw adjustment mechanism with pre-set backlash for an ink fountain blade, includes the adjusting screw threadedly mounting two bushings separated by a compression spring which biases the...
4954032 Anti-backlash nut  
An anti-backlash nut having a pair of nut segments, each with an internal threaded bore adapted to receive a threaded bolt. One nut segment has a portion insertable within the other nut segment and...
4945781 Ball screw mechanism  
The invention relates to a ball screw mechanism (10) having a nut (20) screwing along a worm spindle (12) with at least one set of balls (18) lodged therebetween. The nut is preferably an elongate...
4896552 Ballscrew follower and method of making and operating the same  
An improved ball screw and follower and method of making the same includes one or more helical grooves along the leadscrew with mating grooves and pitch within the follower to form a course...
Matches 1 - 50 out of 124 1 2 3 >