Matches 1 - 50 out of 76 1 2 >
Match Document Document Title
7044012 Actuating device with intermediate rolling elements  
Actuating device comprising a longitudinal shaft ( 2 ), an intermediate tailstock spindle ( 3 ), an outside sleeve ( 4 ), internal thread means ( 5 ) making it possible to connect the longitudinal...
7004045 High thrust valve operator  
A high thrust operator for gate valves employs an inverted satellite roller screw assembly driven by an internally threaded cylinder carried within a bearing case. The cylinder is sized to provide...
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 )...
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...
6648568 Linear blind broaching machine  
A linear blind broaching machine ( 10 ) includes a base ( 22 ), a broaching ram assembly ( 24 ), a linear tool slide ( 26 ) supported on the base by linear antifriction bearings ( 90 ) and a...
6585227 Roller screw actuator for subsea choke or module  
An actuator for use with a subsea choke or similar apparatus is disclosed. The actuator uses a planetary roller screw mechanism to allow greater control of the torque output while allowing a fast...
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...
6186020 Device for conversion of rotary into axial movement  
6170351 Device for converting a rotational movement into an axial movement  
A device for converting a rotary motion into an axial motion has a threaded spindle (1), a nut concentrically surrounding the threaded spindle with a clearance and a plurality of axially parallel...
6131479 Device for converting rotary motion into axial motion  
A device for converting rotary motion into axial motion, having planetary rollers which are driven from a stationary drive housing by a drive shaft. These planetary rollers are held...
6101891 Device for converting a rotational movement into an axial movement  
6098479 Linear actuator and preferred application  
The invention concerns a linear actuator for the conversion of a rapid rotational movement with low moment into a slow linear movement with high force. The concept of a special roller drive of...
6074170 Pressure regulated electric pump  
A pressure regulated electric pump is characterized by a positive displacement double acting reciprocating pump driven by an electric motor through a planetary roller screw. A controller senses the...
6053063 Worm drive with a roller ring nut  
A worm gear for transforming a rotary motion into a reciprocating (linear) motion comprises a threaded spindle (2) which is mounted for rotation in a gear ring nut (1), a profiled gear ring (5)...
6026696 Device for converting a rotary motion into an axial motion  
A device for converting a rotary motion into an axial motion comprises an outer tube (10) with internal contours (10a), an inner shaft (11) with head (11a) with external contours (11b), an inner...
5992258 Rotation/linear motion converting mechanism  
A mechanism for converting rotational motion to linear motion having a roller thread mechanism interposed between a shaft having multiple male threads and a nut having multiple female threads. The...
5836208 Apparatus for converting a rotational movement into an axial movement  
To convert a rotational movement into an axial movement, rolling or roller bodies (2') are seated by way of a plurality of guide rings (5) and bearings (6) disposed between the guide rings (5) and...
5809837 Roller screw device for converting rotary to linear motion  
A roller screw assembly includes a threaded rod, a nut having internal, non-helical grooves and a plurality of externally grooved elongated rollers seated circumferentially about the rod and...
5370012 Linear actuation roller bearing nut  
A device for convening rotational motion of a threaded shaft to linear motion in parallelism with the shaft and having a high load carrying capacity and operating efficiencies that are on the order...
5187992 Rotary to linear motion converter  
A motion converter used with an input element rotatable about an axis and an output element displaceable axially relative to the input element has an axially nondisplaceable support provided with a...
5027667 Spring actuator with rollers  
An actuator having a body with interior helical grooves, an output shaft with exterior helical grooves, a set of rollers in rolling engagement with the body and output shaft grooves, and a piston...
5020417 Rotary servo actuator with internal valve  
A fluid-powered servo actuator having a body, an annular piston, and a shaft extending co-axially therewithin. The shaft has an interior chamber located within the body with two fluid channels...
5004205 High-range and resolution determinate mount and positioner  
The invention relates to a device for accurately positioning an object, such as a mirror 3 used to precisely aim a laser. The invention uses kinematic principles to hold the object. Here a 2-2-2...
4964314 Device for converting rotary motion to linear motion  
An apparatus for converting rotary motion to linear motion includes a centrally located screw member and a concentrically positioned outer member that surrounds the screw member but is spaced...
4884466 Screw with recirculated satellite rollers  
Rollers situated on the circumference of a threaded screw inside a nut have a cavity at each end containing a spring and a pin. When a roller enters the recirculation groove, the spring/pin...
4881419 Fluid-power bearing actuator  
A fluid-powered rotary actuated support for a platform, having a body with a vertical axial orientation during use. A drive member has a drive shaft extending coaxially within the body and a flange...
4858525 Postage meter having a worm gear drive and guiding sleeve  
This invention relates to a postage meter having a plurality of worm gears for adjusting the rotational position of postage print wheels. Each worm gear selectively moves a rack which is an...
4846007 Fluid-power device using axially offset rollers  
A fluid-powered device having a body with interior helical grooves, an output shaft with exterior helical grooves, a plurality of rollers having circumferential grooves, and an axially...
4748866 Linear helical actuator  
A fluid-powered linear actuator having a body, and an output shaft with a piston portion disposed within the body. The shaft is axially movable in a first direction in response to fluid pressure on...
4685345 Apparatus for converting rotary motion to translatory motion  
An apparatus for converting rotary motion to translatory motion. The apparatus contains shaped rollers located therein so that the longitudinal axis of the rollers forms an acute angle with the...
4683767 Rotary actuator with backlash elmination  
A fluid-powered helical actuator including a cylindrical body; a rotatable output member supported for rotation relative to the body and connectable to an external device; first and second...
4655100 Rolling element jackscrew  
An improved rolling element jackscrew includes at least three planetary rollers interposed between an inner shaft and an outer nut, wherein one of the shaft and nut is formed with grooved threads...
4648285 Apparatus for converting rotational motion to linear motion  
Apparatus is provided for converting rotational motion to linear motion which includes a screw shaft and nut surrounding the screw shaft, each having a helical thread. A plurality of threaded...
4615229 Device for translating a rotary motion to a linear one  
A device for translating a rotary motion to a linear one consisting of a first elongate body (1) provided with screw threads extending along the body and a second body (5) rotatable coaxially with...
4591313 Propeller pitch control system and apparatus  
A plurality of propeller blades are mounted to an axially elongated tubular propeller hub (H1). Each blade is rotatable in position about a radial axis. An electromechanical linear actuator (A1) is...
4576057 Anti-friction nut/screw drive  
An improved nut-and-screw type device for converting rotary input to linear output. The device includes an involute-helicoidal screw, a nut assembly including a plurality of annular ring and groove...
4526053 Stabilized apparatus for converting rotational motion to linear motion  
Apparatus is provided for converting rotational motion to linear motion which includes a screw shaft and nut surrounding the screw shaft, each having a helical thread. A plurality of threaded...
4375770 Releasable screw and nut bearing mechanism  
This releasable screw and nut bearing mechanism comprises an internal central screw, a coaxial external nut constituting a socket made of several segments, the outer diameter of the screw being...
4050319 Linear actuator  
A linear actuator of the threaded shaft actuator type comprising a rotary threaded shaft and a special bearing unit secured to the member to be moved linearly, in which the bearing unit comprises a...
4048867 Mechanical device converting rotary input to linear compression or stretching output with a high mechanical advantage  
A mechanical device converting rotary input to linear compression or stretching output with a high mechanical advantage and with a minimum of frictional losses which comprises a screw member having...
4033194 Synchronized linear actuator  
A linear actuator of the threaded shaft actuator type comprising a rotary threaded shaft and a special bearing unit secured to the member to be moved linearly, in which the bearing unit comprises a...
3884090 Roller screw mechanism  
Roller screw mechanism comprising a screw member having an external thread, a nut circumscribing the screw member having an internal thread, a plurality of rollers in the annular space between said...
3789678 SCREW DRIVE MEANS USING AUXILIARY MESHING ROLLERS  
A means for mechanically moving a spindle in a longitudinal direction by operating one or a plurality of meshing rollers positioned around the spindle axis. In one form the spindle is formed with...
3744332 SCREW AND NUT MECHANISM  
In a screw and nut mechanism including transmission rollers the necessary displacement of the rollers one step backwards for each revolution of the nut with respect to the screw is brought about by...
3726151 ADJUSTABLE SCREW AND NUT DEVICE  
This screw and nut device with precision play adjustment characteristic comprises two nuts engaging a commonscrew, for example through the medium of satellite rollers. These nuts are connected by a...
3595094 RACK AND WORM MECHANISM  
Device for transforming a movement of rotation into a movement of translation by means of a high-efficiency rack and worm mechanism characterized in that the rack teeth formed on one portion of a...
3585869 SCREW AND SOCKET MECHANISM  
A device comprising a screw and a nut-forming tapped socket operatively interconnected by a set of externally screw-threaded planet rollers simultaneously engaging with their threads those of said...
3508452 GEARING MECHANISM  
3434357 LINEAR POWER AMPLIFIER MECHANISM  
3406584 Differential roller nut  
Matches 1 - 50 out of 76 1 2 >