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| Number | Title | Issue Date |
| 8061227 | Small slider unit A small slider unit having a size effectively reduced in the longitudinal direction is equipped with a rail 22; a slide table 23 moving on the rail 22; a screw shaft 26 coupled to the slide table 23 and situated parallel to the rai... | 11/22/2011 |
| 7856900 | Actuating cylinder with sensor associated with its rod Actuating cylinder including a longitudinal cylinder body, a longitudinal cylinder rod traversing a front transverse wall of the cylinder body and a longitudinal means of operating the cylinder rod relative to the cylinder body, the cylinder body including a rear tr... | 12/28/2010 |
| 7520192 | Reduced-friction drive screw assembly Methods and apparatus are disclosed for providing reduced friction in drive screw assemblies, including electromechanical actuator (EMA) assemblies. A drive screw assembly is disclosed that includes a drive shaft, a drive screw, and a screw head. A stationary guide ... | 04/21/2009 |
| 7441956 | Linear guide/feed module with guide body and boom for it A linear guide/feed module has a tubular boom movable along a movement axis, a housing encompassing the tubular boom so that the boom is travelable out of and into the housing along the movement axis, a drive unit for driving the boom to move in relation to the hous... | 10/28/2008 |
| 7389709 | Reverse transfer system ball-screw, and electro-mechanical actuator employing same An electro-mechanical actuator (21) includes a reverse transfer system ball-screw (20). The actuator broadly includes a frame (22), a nut (43) mounted on the frame, at least one magnet (59) mounted on the nut, at least one coil ( | 06/24/2008 |
| 7389974 | Screw, nut and cable transmission A screw, nut and cable transmission device (6, 7, 12, 13, 20 and 21) between a motor (5) and a device (1, 2) which is to be moved and which is made up of at least one double pulley (14), which amplifies the movement of the cable li... | 06/24/2008 |
| 7348698 | Actuator for operating a transmission control valve of an automatic transmission apparatus A rotor having magnets composed of rare-earth magnets is rotatably disposed inside an exterior casing, a penetrating aperture is disposed through a first end of the exterior casing relative to a direction of a motor central axis, and a filter is disposed so as to co... | 03/25/2008 |
| 7349834 | Molecular motor A molecular motor in which multiple concentric cylinders (or nested cones) rotate around a common longitudinal axis. Opposing complementary surfaces of the cylinders or cones are coated with complementary motor protein pairs (such as actin and myosin). The actin and... | 03/25/2008 |
| 7329199 | In-line actuator apparatus and method An actuator having an electric motor with a rotor shaft engaged with a gear set within a housing is provided. As an example, the gear set may be a planetary gear set. The planetary gears are engaged with a disk. The disk is fixed to a shaft rod or other force transm... | 02/12/2008 |
| 7322509 | Friction stir spot joining device There is provided a friction stir spot joining device to eliminate the generation of tipping torque caused by a pressing force by allowing the axis of a ball screw for generating the pressing force and the center of a shaft of a stirring motor to be coincident with ... | 01/29/2008 |
| 7281443 | Manual control device Manual actuating device for the actuation of an appliance, subjected to a force in a direction opposite to the actuation direction, especially in the production of mineral oil or natural gas, such as a blowout preventer (BOP), valve, actuator, throttle or similar, w... | 10/16/2007 |
| 7190096 | Fault-tolerant electro-mechanical actuator having motor armatures to drive a ram and having an armature release mechanism An electrical actuator comprises two or more electrical motors to drive a threaded screw ram. Each motor has an armature that drives a threaded roller screw that is engaged to the threaded screw ram. Each armature of each motor is independently engageable and/or dis... | 03/13/2007 |
| 7135794 | Spring support having a height-adjustable spring plate Spring support having at least one axially moveable spring plate, an actuator with a rotor producing a rotational movement relative to its stator, which is converted into an axial movement of the spring plate, and a torsional locking element which prevents torsional... | 11/14/2006 |
| 7118506 | Actuator for active front steering system A active steering apparatus includes a housing, an input shaft, an output shaft, and an electrical motor. The electric motor has a stator fixed to the housing and a rotor. A first gear set interconnects the input shaft and the output shaft and includes a sun gear fi... | 10/10/2006 |
| 7098562 | Ambidextrous electronic window lift motor A motor assembly 30 includes an electric motor 32 having a rotatable shaft 40, the shaft 40 having a worm 38; and a gear unit 33 operatively associated with the motor, the gear unit has first and second opposing ends. The ge... | 08/29/2006 |
| 7073406 | Screw and nut transmission and cable attached to the screw A cable or another longilinear transmission component is set into the center of an axial cavity of a screw belonging to a screw and nut movement conversion unit. By means of this arrangement, bending moments exerted on the screw between the point of attachment of th... | 07/11/2006 |
| 7047833 | Feed unit In a feed unit of a rod-type actuating element that is arranged in a housing (2) and guided for axial displacement relative to the housing (2), the feed unit further being a drive motor (4) that effects the displacement of the actuating element ... | 05/23/2006 |
| 7007566 | Actuator for a motor vehicle transmission An actuator for an automated transmission in a motor vehicle drive train has a central actuating shaft with a shift finger. Two sleeves are supported concentrically on the actuating shaft and can be driven in mutually independent rotation. Two grooves of opposite he... | 03/07/2006 |
| 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 a relief plenum within the case into which the roller screw assembly ... | 02/28/2006 |
| 7000892 | Pneumatic servo valve The present invention relates to a pneumatic servo valve, and more particularly, to a pneumatic servo valve, wherein displacement of a spool due to flow force of a fluid is prevented by firmly holding the spool just after position control for the spool is completed,... | 02/21/2006 |
| 6968752 | Drive shaft moving device A drive shaft moving apparatus of the present invention includes a drive shaft 1 with a screw groove 3 formed in spiral shape, and a nut 5 fitted around the drive shaft 1 and being rotatably supported on a main flame 15 so as to al... | 11/29/2005 |
| 6908405 | Pulley width adjusting device for continuously variable transmission A ball screw mechanism that can drive a movable pulley disk in an axial direction includes a screw cylinder and a nut member. A stopper pin is inserted through the screw cylinder from one end surface of the circumferential wall of the screw cylinder to the other end... | 06/21/2005 |
| 6882073 | Linear type actuator In order to reduce cost through reduction in material cost and improvement of productivity, in a linear type actuator comprising: a stator unit having coils consisting of wound magnet wires and housed inside stator sub-assemblies and pole teeth arranged on the inner... | 04/19/2005 |
| 6857332 | Linear or rotary actuator An actuator (1) for the linear displacement of a member to be controlled comprising a motor part (2) and an actuating device part (3) including a threaded screw (11) with linear displacement, and a rotary member (9) provided with a... | 02/22/2005 |
| 6857333 | Rotational stop A rotational stop that includes: a lead screw having a longitudinal axis, a motor integrally mounted to the lead screw, wherein the motor provides rotation to the lead screw; a slide mounted to a support structure to provide movement relative to the lead screw longi... | 02/22/2005 |
| 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 spindle sections, respectively. At least one motor is connected to the ... | 09/28/2004 |
| 6794772 | Rotary motor using electrical linear actuators An electric motor assembly is provided that includes a housing. A rotor is arranged in the housing and is rotatable about an axis. A vehicle wheel is coupled to the rotor. The rotor has an annular profile defining sinusoidal teeth and is generally concentric with th... | 09/21/2004 |
| 6781265 | Linear actuator A compact and simple linear actuator includes a spindle to a main body so as to be capable of moving in an axial direction, displacement detection device, a motor, and a transmission mechanism. The displacement detection device detects a movement displacement amount... | 08/24/2004 |
| 6672598 | Member arranged to act between two in relation to each other movable parts of a vehicle The present invention relates to a member (1) arranged to act between two parts of a vehicle which are movable in relation to each other. The member (1) comprises a first portion (2) having an elongated rod (6) with external threads (7) and a second porti... | 01/06/2004 |
| 6633143 | Reactionless rotary drive mechanism An articulating probe head includes motors 12 and 18 for driving respective output shafts 14 and 20 about respective orthogonal axes z and x to move a stylus 22 over the surface of a workpiece under the control of a controller 26. At least one of the moto... | 10/14/2003 |
| 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 shaft has a hole, arranged in an end portion of the motor shaf... | 11/05/2002 |
| 6464034 | Electrically powered steering device An electrically powered steering device comprises a ball screw mechanism for transmitting a steering force from a steering wheel to steerable vehicle wheels. The ball screw mechanism includes a rotary nut 11 having a nut body 11a in which a circulating pa... | 10/15/2002 |
| 6453761 | Direct attachment electric motor operated ball nut and screw linear actuator A linear actuator comprises a ball screw carrying an axially restrained rotatable ball nut driven by an electrically energized motor. An enclosing motor housing has front and rear walls with axially aligned openings for passing the ball screw. The motor h... | 09/24/2002 |
| 6186268 | Electric power steering unit An electric power steering unit comprises a rack-shaft 2 to be coupled to the guiding wheels of a vehicle, an electric motor 1 coaxially arranged around the rack-shaft 2, a ball screw mechanism 3 for connecting a nut section 19 with a screw section 30 of ... | 02/13/2001 |
| 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 (41), and which is engaged with the rotor (32) to convert ... | 09/12/2000 |
| 6041886 | Rear-wheel steering system A rear-wheel steering system designed to reduce noise to a minimum at a low cost. The rear-wheel steering system includes an electric motor for generating a rotational force, a nut member connected to the electric motor and rotated thereby, and a rod havi... | 03/28/2000 |
| 5966988 | Shaft rotation driving apparatus for machine tool A shaft rotation driving apparatus for a machine tool having a main spindle for rotating a tool or a workpiece, comprises: a magnetic anisotropic rotor formed integral with the main spindle itself or with a rotary sleeve itself fitted to the main spindle;... | 10/19/1999 |
| 5894760 | Substrate transport drive system A substrate transport having a housing, a drive assembly connected to the housing, and a moveable arm assembly operably connected to the drive assembly. The drive assembly has a frame stationarily connected to the housing forming a cage with an open side.... | 04/20/1999 |
| 5799543 | Actuator structural body An actuator structural body is constructed of standardized columnar bodies connected for moving a workpiece. The Actuator structural body includes actuators shaped as columnar bodies and having T-shaped grooves defined in outer side surfaces thereof, colu... | 09/01/1998 |
| 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 rotation of the rotor is transformed to linear movement of the sc... | 07/28/1998 |
