Matches 1 - 50 out of 152 1 2 3 4 >
Match Document Document Title
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...
7342374 Automatic gate operator  
A barrier movement operator is having a position sensor in a telescoping barrier control arm is described. A controller, remote from the arm, senses the barrier position to identify limits of...
7313978 Linear motion device associated to a worm  
A linear motion device ( 10 ) associated to a worm ( 14 ) including a body ( 12 ) internally provided with a housing seat for partially receiving a worm having a plurality of grooves, a mobile...
7055195 Patient bed with CPR system  
An electrically activated emergency system for a patient bed comprises: an electrically powered linear actuator for driving a back rest of the patient bed from a lowered back rest position to a...
7047834 Actuator  
An actuator includes a quick release inserted in a transmission between an activating element ( 6 ) and a reversible electric motor ( 2 ) for releasing the activating element from the electric...
6981428 Linear actuators  
A linear actuator comprises rotary motion producing means ( 1,2,3,4,5 ); linear motion producing means ( 6,7,10,11,12 ) coupled with the rotary motion producing means for converting rotary motion...
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...
6796199 Drive for machine components such as carriages, gripping devices or the like  
A drive for machine components has at least one threaded spindle having spindle sections with oppositely oriented axial pitch. Nuts are seated on the at least one threaded spindle and engage the...
6689037 Machine for the lengthwise treatment of webs of corrugated board  
On a machine frame, a machine for the lengthwise treatment of webs of corrugated board comprises a pair of tool beds, on which several tool holders are disposed for displacement by means of a...
6662921 Wheel steering apparatus  
To provide a wheel steering apparatus capable of exhibiting a stabilized vehicle steerability without transmitting an external disturbance torque to a motor rotor even when the wheel receives an...
6588828 Vehicle aperture closure drive system  
A drive system ( 10 ) operable to drive vehicle door functions comprises a drive member ( 20 ) mounted for rotation about a drive axis by a drive motor ( 12 ), a rocker ( 24 ) operable by the drive...
6557583 Electric power modulated lead screw actuated dampers and methods of modulating their operation  
A damper assembly in which the position of the damper blades is controlled by an electric powered actuator. The powered actuator rotates a threaded lead screw shaft attached to an operator means...
6499159 Apparatus for coupling a drive to an adjustable patient positioning plate in a medical system  
In a coupling arrangement for a drive arrangement and an adjustable positioning plate of a medical system, the positioning plate is adjustable at least in the direction of its longitudinal axis via...
6279411 Linear drive mechanism  
A linear drive mechanism comprising a moveably guided output member (12). The output member (12) is guided on a supporting device (15) in a supporting area (13) of the housing (1). A position...
6116103 Device for securing gear nut on actuator  
A threaded leadscrew moves axially within the housing of a linear actuator. The leadscrew's movement rotates a threaded gear nut that surrounds the leadscrew. Stopping the gear nut rotation...
6109124 High-thrust clutch-type automotive electric lock  
Disclosed is a high-thrust clutch-type automotive electric lock which uses a motor to sequentially rotate a primary gear connected with a clutch assembly, a secondary gear, and a worm connected to...
5916325 Actuator assembly and torque limiting system for same  
A torque limiting system for limiting the torque transferred between a rotating member and another member in which a disc is disposed within the rotating member and a shaft is coupled to the disc...
5901608 Automatic speed-change apparatus for a gear transmission  
The object is to provide a speed-change apparatus wherein the automatic speed change of the conventional gear transmission can be satisfactorily performed by controlling a single motor and a single...
5873276 Keypad entry electronic combination lock with self-generated combination  
A combination lock and particularly an electronic combination lock used on a container that is typically housed within an enclosure having a door which further has a lock and a security switch...
5809830 Control device, especially for a motor vehicle clutch  
A control device including an electric motor (11), which acts through a transmission (12) on a piston (13) of an actuator (14), a resilient assistor (15) which acts on a member (16) of the...
5802639 Variable force clutch for linear actuator  
A variable force clutch for use with a linear actuator power screw assembly including a threaded drive screw with a stop member secured at each end, the screw assembly used in an application...
5793574 Tape head actuator assembly having a shock suppression sleeve  
A magnetic tape head actuator assembly has a stepper motor having a threaded output shaft and a bracket for supporting a tape head assembly. The bracket includes a pair of outwardly extending...
5771751 Turnbuckle for a tensioning cable  
A turnbuckle for a tensioning cable includes a casing forming a cavity. An internally threaded nut is mounted to the casing at one end of the cavity, the nut being rotatably and non-axially movable...
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...
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...
5669264 Apparatus for preventing urging rotation of a ball screw shaft for a linear working machine  
An apparatus for preventing urging rotation of a ball screw shaft in a linear working machine includes a housing. A compressive force stopper and a tensile force stopper is contained in an outer...
5511900 Reversible handedness screed control device  
An improved screed control device includes two pairs of interacting cylindrical surfaces for controlling the "angle of attack" or elevation of a screed of a paver, a first pair of the two pairs of...
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...
5388471 Thrust bearing for an actuator driving a sensor device  
A thrust bearing assembly for retaining a ball screw of an actuator in a housing and driving a position sensor in a control system. The thrust bearing assembly has a cylindrical body with an...
5373752 Power actuator for motor-vehicle door latch  
A motor-vehicle power actuator has a housing, an electric motor in the housing having an output shaft, an input gear fixed on the shaft, a threaded spindle extending along and rotatable about a...
5360185 Linear actuator, in particular for driving an aircraft landing gear leg  
A linear actuator, in particular for driving an aircraft landing gear leg, the actuator comprising a main body with a screw that is prevented from moving axially and that is constrained to rotate...
5355743 Robot and robot actuator module therefor  
An actuator module for inducing the relative motion of robot members joined in a robot joint includes a Ferguson epicyclic gear train, integral motor and integrated control means. The gear train...
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...
5329657 Quick release coupling for head section of a hospital bed  
A hospital bed includes an articulatable patient support with a fowler portion movable between horizontal and inclined positions relative to a frame of the bed. A reversible electric drive motor is...
5327795 Ball screw apparatus  
A ball screw apparatus having a revolving position detector for detecting revolutions of a ball screw nut and a ball spline nut and a number-of-revolutions altering means for issuing a command to...
5187993 Actuator for remote control  
A power operated linear actuator for remote operation of a machine. A cylinder frame containing a motor and a step-down gear train, a push-pull rod connected with a threaded nut movable along a...
5172617 Lathe chuck  
A power chuck has a stationary housing, a chuck spindle rotatable in the housing about a chuck axis, a plurality of jaws carried on the chuck body movable radially toward and away from one another,...
5131510 Brake assembly for a control rod drive  
A brake assembly is disclosed for selectively preventing rotation of a shaft, such as a shaft used in a control rod drive for a nuclear reactor. The brake assembly includes a stationary base, a...
5127281 Composite motion guide device  
In a composite motion guide device comprising a drive shaft having a spiral screw groove grooved on the outer circumferential face and a linear spline groove grooved thereon in the axial direction...
5086900 Power converting mechanism  
In the electric actuator of the present invention, the power converting mechanism is provided for converting the rotary power of the motor into linear power of the driven member, which needs no...
5062765 High tower wind generating system  
A more efficient wind power generation system is afforded by extending tower heights to several hundred meters to operate wind catching rotors and generators aligned with the wind direction at...
5025541 Device and a process for screwing and unscrewing a nut on a coupling member  
The device for screwing and unscrewing a nut (30-32) on a coupling member (2), comprising a framework (14) pivoting around a shaft (15) parallel to the coupling member (2), a gear train (17, 19,...
4977788 Apparatus for adjusting the positions of components in machines  
An apparatus for simultaneously or independently adjusting components in a machine wherein the components are movable along a track to change the positions of tools, tool holders or other mobile...
4968239 Direct-pressure type mold clamping mechanism  
A motor-operated, direct-pressure type mold clamping apparatus is capable of high-speed mold closing and opening operations and of producing a required mold clamping force, without the use of a...
4938090 Axial actuator  
An axial actuator wherein an output rod is controlled axially by a recirculating-ball screw-nut screw coupling, the screw of which is formed on the rod, and the nut screw of which is supported in...
4920816 Actuator with a clutch mechanism  
There is disclosed an actuator with a clutch mechanism in which a shaft device for operating an external mechanism is formed with threads thereon so as to be engaged with or disengaged from threads...
4889002 Anti-lockup drive mechanism for a position controlled linear actuator  
A linear actuator is provided with an electric motor rotating a drive pinion gear in mesh with an intermediate gearing arrangement which in turn is in mesh with a main drive gear for rotating a...
4872903 Screw jack safe against overload for a movable element such as a seat structure  
The jack (V) comprises a tubular primary screw (10) movable in rotation and translation and provided with an outer screw thread (10a) and an inner screw thread (10b) which have opposite thread...
4858481 Position controlled linear actuator  
A linear actuator includes an electric drive motor which is connected to a drive screw through a gear train. Rotation of the drive screw causes the drive nut to move axially in order to impart...
4846011 Clutch assembly  
A slip clutch assembly has a push-pull rod on link and a motor driven threaded lead screw shaft which screws in and out of a threaded bore in the push-pull rod. A plastic generally cylindrical nut...
Matches 1 - 50 out of 152 1 2 3 4 >