Matches 1 - 50 out of 181 1 2 3 4 >
Match Document Document Title
7592769 Electric cylinder  
There are provided two kinds of nuts of a ball thread nut 20 and a non-ball thread nut 30 which is rotatable in synchronization with the ball thread nut 20 and in which a thread groove in...
7562594 Electric actuator capable of converting rotational motion to a linear motion  
Disclosed is an electric actuator capable of effectively absorbing shock exerted on its component part. The electric actuator has a housing, a rod cover, a piston, a feed screw, a sliding nut, two...
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...
7434486 Lead screw bearing  
A bearing assembly includes a housing having a substantially round throughbore, a first side, and a second side. A sleeve bearing is situated within the throughbore. A first spring washer is...
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...
7225694 Telescopic actuator  
A telescopic actuator has a lead screw and one or more concentric or tiered screws. Each screw has one or more tangential interference stop features such as stop cogs. As the lead screw is rotated,...
7185556 Tie rod jam nut  
A tie rod jam nut includes a tubular body having an axial bore for receiving a tie rod. A locking portion at a first end of the body can engage the tie rod and a threaded portion of a connecting...
7159482 Electric actuator  
An electric actuator comprises a gear mechanism which transmits the rotary driving force of a rotary driving source, and a ball spline mechanism which includes a ball spline shaft provided movably...
7028569 Piston, in particular for sampling valve  
The invention concerns a piston wherein the mobile screw ( 2 ) is engaged in the bolt ( 8 ) integral with the mobile assembly ( 1 ). It is provided with a cylindrical axial housing ( 10 ) wherein...
7004043 Elevated support pole with automatic electrical connection and disconnection  
A support pole for raising and lowering a supported object between a lower position and an elevated position is disclosed. The support pole includes an elongate pole and a carriage mounted for...
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...
6823756 Displacement unit  
A displacement unit for at least one element to be displaced is provided comprising a drive unit, a transfer element that is caused to move by the drive unit and that comprises a thread or a tooth...
6807877 Electric actuator  
A nut member 5 for moving forward and rearward by rotating a feed screw 4 by a stepping motor 28 and a transfer table 7 for transferring a workpiece W are elastically connected by a spring...
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...
6761080 Multiple stage, multiple extend, speed reducing ball screw linear actuator and method of constructing and operating the actuator  
A multiple extend ball screw and nut linear actuator incorporates a revolvable axially restrained ball screw with a ball nut thereon. A constant speed reversible drive revolves the screw to move...
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 1 a in a syringe 1 , a plunger drive 500 for converting rotary motion of a...
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...
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...
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...
6490942 Spindle drive having encased spindle nut with break-free moment reducing opposite end collars  
A spindle drive for adjusting structural components of a motor vehicle seat relative to one another includes a casing having opposite end walls with openings therein, a spindle nut disposed in the...
6473958 Motor shaft for rotational-to-direct motion converting motor and method of manufacturing the motor shaft  
A motor shaft for a rotational-to-direct motion converting motor has a rotation stopping portion formed in a plate shape, and a screw portion formed in a columnar shape. In addition, the motor...
6447150 Pole with lifting mount  
A support pole for raising and lowering a supported object between a lower position and an elevated position is disclosed. The support pole includes an elongate pole having a top, a bottom, and a...
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...
6393930 Ball screw with inner ball circulation and linear actuator equipped with the ball screw  
A ball screw with inner ball circulation whose transfer displacement to size ratio is large, resulting in a device which has an optimized size with a positioning accuracy measured in microns, and a...
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...
6116106 Rotation-reciprocation converting rotor  
A rotation-reciprocation converting motor comprises: a rotor (32) which is rotatable in a forward direction and in a reverse direction; and a motor shaft (33) which is slidably guided by a bushing...
5913763 Method for controlling the operational modes of a door in conjunction with a mechanical door control mechanism  
A method for selective alteration and control of door movement modes utilizing an apparatus that is primarily non-hydraulic and incorporated with a known mechanism which is functional independently...
5901610 Electromotive drive mechanism for a piece of furniture  
An electromotive drive mechanism for a piece of furniture, includes a gearmotor having a rotor rotating about a rotational axis, an adjusting spindle for operation of a piece of furniture, and a...
5878624 Single rail shift operator assembly  
A transfer case having a two-speed drive assembly includes a directly coupled shift operator with feedback. The shift operator includes an electric, pneumatic or hydraulic motor which directly,...
5823053 Gear-shift device for a change-speed gearbox  
In a gear-shift device for a change-speed gearbox, a shift actuator, a selection actuator, an actuator which is arranged such that it can be displaced exclusively axially with regard to a housing,...
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...
5789835 Positioning apparatus  
The present invention discloses a positioning apparatus that, together with rotating an object (driven object), positions and guides said object to an arbitrary position within its rotating plane....
5784922 Motor for converting rotation of a shaft to linear movement  
A motor includes a rotatable cylindrical rotor housed in a stator and has a female threaded nut formed inside the rotor. The motor has a male threaded screw shaft engaging with the nut. The...
5761963 Spindle nut/threaded spindle device  
A device for converting the rotation of a spindle nut into a force-related linear translation of a threaded spindle in an electromechanical valve actuator, the spindle being formed with...
5704249 Screw drive mechanism for articulated beds and the like  
A screw drive mechanism for articulated beds and the like includes a drive shaft having external screw threads, a segmented drive nut having internal threads which engage the external threads of...
5687507 Apparatus for selective alteration of operating parameters of a door  
Apparatus is are disclosed for selective alteration and control of door movement modes, the apparatus being primarily non-hydraulic and incorporated with a known mechanism which is functional...
5620230 Adjustable hairdresser's chair  
An adjustable hairdresser's chair is described. The chair includes a motor housing base which has a front shell and a rear shell interconnected by a bellows. A front seat is mounted on the front...
5491633 Position sensor for electromechanical suspension  
An apparatus comprising a rotating element, a rotary to linear converter, a linearly moving element that linearly extends and retracts when the rotating element rotates in first and second...
5476338 Vehicle parking or passageway security barrier  
A bollard type security barrier apparatus for use in controlling ingress and egress to controlled areas. The apparatus if of simple design, is easily installed and includes a remotely operated...
5472065 Linear motion drive  
A linear drive, particularly useful for locking or unlocking a door lock mechanism or the like permits manual operation by providing an output shaft that can move freely regardless whether the...
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...
5392663 Octahedral machine tool frame  
A machine element support comprised of a plurality of axially extensible and contractible servostruts which are individually adjustable and collectively controllable. The struts comprise an outer...
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...
5295407 Electric linear actuator  
An electric linear actuator includes an output shaft which is non-rotatable but displaceable in an axial direction and which has one end thereof coupled to a driven device; a cylindrical member...
5282392 Synchro-clutching screw-and-nut mechanism  
This invention relates to a new type of screw-and-nut mechanism comprising a screw stem supported in a structure, the screw stem is to engage with a partially threaded nut also contained in the...
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....
5220906 Device to draw the bowstring of a crossbow  
A device for cocking a crossbow having a bow (12) and a bowstring (16) includes a main housing (21), a movable shaft (22), a device (31) operatively connected to the movable shaft (22) to laterally...
5180038 Electronically controlled parking brake system  
An electronically controlled parking brake system for a vehicle including a housing connected with the vehicle chassis, a movable member adapted for connection with the parking brake cable of the...
5174167 Linear actuator with positive stop  
An improvement to a linear actuator (9) having a lead screw (15) received in a drive tube assembly (17) is provided in the form of a bushing (41) mounted on the end of the screw. The outer...
5157982 Rotary actuator  
A rotary actuator includes a cup-shaped piston which is movable back and forth and rotatable on its axis. A driving shaft has on its circumferential face a threaded area engaging with a threaded...
Matches 1 - 50 out of 181 1 2 3 4 >