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| Number | Title | Issue Date |
| 7895935 | Toroidal ram actuator A toroidal ram actuator comprising a part toroidal shaped cylinder mounted to a first member and a part toroidal piston reciprocally movable within the cylinder, a free end of the piston being mounted to a second member, wherein the first and second members are pivo... | 03/01/2011 |
| 7866253 | Pressure medium-actuated unit A pressure-medium actuated swivel motor includes a cylinder with closed ends and an inside surface with a pair of diametrically opposed axially extending ribs, and a motor shaft with a pair of diametrically opposed axially extending vanes, wherein the vanes and the ... | 01/11/2011 |
| 7308878 | Valve timing control apparatus A valve timing control apparatus includes a driving side rotational member, a driven side rotational member formed with a plurality of recessed portions into which a supporting jig is insertable at a second side thereof in the axial direction, a fluid pressure chamb... | 12/18/2007 |
| 7243594 | Rotary actuator The present invention relates to the field of rotary actuators. Specifically, the present invention relates to rotary actuators comprising a rotatable top piston assembly and a stationary bottom piston assembly wherein rotation of the top piston assembly can be caus... | 07/17/2007 |
| 7213554 | Valve timing control apparatus for internal combustion engine A valve timing control apparatus for controlling an opening and closing timing of a valve of an internal combustion engine includes a driving side rotational member synchronously rotated with a crankshaft, a driven side rotational member provided coaxially with the ... | 05/08/2007 |
| 7204217 | Hydraulic camshaft adjuster for a camshaft of an internal combustion engine In a hydraulic camshaft adjuster for a camshaft of an internal combustion engine, with an inner body connected for rotation with the camshaft and having at least one vane extending into a chamber formed in an outer body mounted rotatably relative to the camshaft and... | 04/17/2007 |
| 7204731 | Linear propulsor with radial motion The invention comprises a scalable, configurable “propulsor” system. A propulsor system is an assembly of individual propulsors that act in concert to form a substantially continuous control surface that undulates in a working fluid. Each propulsor is driven and... | 04/17/2007 |
| 7159549 | Variable valve system of internal combustion engine A camshaft is formed at a generally middle portion with an enlarged cylindrical portion. An annular vane member is mounted on the enlarged cylindrical portion and secured thereto by means of a nut. An annular housing or sprocket is arranged to receive therein the an... | 01/09/2007 |
| 7150344 | Actuator and slack adjuster A fluid operated brake actuator is provided composed of a common housing, a shaft rotatable within the housing, the shaft being rotatable to engage and disengage a brake, a vane connected to the shaft, the vane being responsive to fluid pressure to rotate the shaft,... | 12/19/2006 |
| 7107952 | Actuating device for securing a camshaft of an engine of a motor vehicle in a start position An actuating device for hydraulically securing a camshaft of an engine of a motor vehicle in a start position has a solenoid valve controlling the flow of a pressure medium to a camshaft adjuster with a rotary slide valve that is fixedly connected to the camshaft an... | 09/19/2006 |
| 6997150 | CTA phaser with proportional oil pressure for actuation at engine condition with low cam torsionals A variable camshaft timing phaser for an internal combustion engine having at least one camshaft comprising a plurality of vanes in chambers defined by a housing and a spool valve. The vanes define an advance and retard chamber. At least one of the vanes is cam torq... | 02/14/2006 |
| 6865982 | Valve actuator A fluid operated actuator comprising a cylinder, a piston and a linkage rod connected to the piston, in which the cylinder is curved through a number of degrees. ... | 03/15/2005 |
| 6776082 | Fluid powered rotary indexer A fluid powered rotary indexer includes a housing with a piston rotatably mounted therein. The housing includes ports providing fluid communication to opposing compartments within the housing so as to rotate the piston clockwise or counterclockwise upon the introduc... | 08/17/2004 |
| 6739298 | Valve timing adjusting apparatus In a valve timing adjusting apparatus, rotating response speed of a vane rotor and a moving speed of a lock piston are changed according to changes of oil temperature and pressure. It sometimes happens that the lock piston passes the fitting hole before the lock pis... | 05/25/2004 |
| 6691656 | Cam phaser hydraulic seal assembly A rotary hydraulic seal assembly for sealing a rotationally eccentric annular gap between a rotating cam phaser element and a stationary cover. The assembly includes a tubular sleeve disposed between the phaser and the cover at the junctures of control oi... | 02/17/2004 |
| 6668777 | Arrangement for the relative angle-of-rotation adjustment of a camshaft of an internal-combustion engine with respect to a driving wheel An arrangement is provided for relative angle-of-rotation adjustment of a camshaft of an internal-combustion engine with respect to a driving wheel. An interior part, non-rotatably connected with the camshaft, has at least approximately radially extending... | 12/30/2003 |
| 6666181 | Hydraulic detent for a variable camshaft timing device A phaser which includes a housing and a rotor disposed to rotate relative to each other is provided. The housing has at least one cavity disposed to be divided by a vane rigidly attached to the rotor. The vane divides the cavity into a first chamber and a... | 12/23/2003 |
| 6655256 | End stops for dual end stop actuator and method A dual end stop is provided for setting precise open and closed positions for the valve to which the pneumatic actuator is attached. In a preferred embodiment, a stop assembly housing contains two stop adjustment bolts as well as a cam that defines first ... | 12/02/2003 |
| 6612220 | First adjust dual end stop actuator and method A dual end stop is provided for setting precise open and closed positions for the valve to which the pneumatic actuator is attached. In a preferred embodiment, a stop assembly housing contains two stop adjustment bolts as well as a cam that defines first ... | 09/02/2003 |
| 6612219 | Adaptor plate for dual end stop actuator and method A dual end stop is provided for setting precise open and closed positions for the valve to which the pneumatic actuator is attached. In a preferred embodiment, a stop assembly housing contains two stop adjustment bolts as well as a cam that defines first ... | 09/02/2003 |
| 6604449 | Quarter-turn dual end stop actuator and method A dual end stop is provided for setting precise open and closed positions for the valve to which the pneumatic actuator is attached. In a preferred embodiment, a stop assembly housing contains two stop adjustment bolts as well as a cam that defines first ... | 08/12/2003 |
| 6571682 | Apparatus for converting circular motion to radial motion In accordance with one aspect of the present invention there is provided apparatus and a method for converting circular motion to radial motion. In one embodiment of the apparatus of the present invention, a mandrel is provided which includes a generally ... | 06/03/2003 |
| 6511040 | Pneumatic actuator Disclosed is a pneumatic actuator which includes a housing comprised of two halves and having at least two passages defined therethrough, including a "loop" groove defined in an inner peripheral wall of the housing into which a seal member is inserted. A ... | 01/28/2003 |
| 6446539 | Dual end stop actuator and method A dual end stop is provided for setting precise open and closed positions for the valve to which the pneumatic actuator is attached. In a preferred embodiment, a stop assembly housing contains two stop adjustment bolts as well as a cam that defines first ... | 09/10/2002 |
| 6349679 | Circularly-curved piston engine This engine is substantially free from any vibration and noise, small in friction loss, improved in mechanical efficiency to a considerable extent, compact and lightweight, and applicable to a reciprocating piston engine. The engine comprises: curved cyli... | 02/26/2002 |
| 6318701 | Pneumatic actuator Disclosed is a pneumatic actuator which includes a housing comprised of two halves and having at least two passages defined there through, including a "loop" groove defined in an inner peripheral wall of the housing into which a seal member is inserted. A... | 11/20/2001 |
| 5996523 | Hydraulic oscillator A hydraulic oscillator having a stator defining an axis of rotation; rotor means; annular-shaped operating chamber between said stator and said rotor; rotary piston associated with said rotor means and disposed within said operating chamber for rotation a... | 12/07/1999 |
| 5622096 | Rotational position detector device for rotary actuator A rotational position detector device (20), which is fastenable to a rotary actuator (1) of the type comprising a rotary motor (3,5) inside a housing (2) and a rotary shaft extending therefrom, a turning element (21) adapted to be rotationally fastened to... | 04/22/1997 |
| 5495791 | Actuator for transfer of forward and backward rotational movement A fluid-operated actuator comprising a chamber part (1) with at least one chamber (12, 13), a carrier (3) which is rotatably mounted in the chamber part (1), and a plunger piston (2) in the form of a circular arc. The plunger piston can be moved along the... | 03/05/1996 |
| 5438912 | Hydraulic rotary actuator An hydraulically powered rotary actuator for rotating a first portion of a work machine relative to a second portion of the work machine has inner and outer rings enclosed by first and second cover plates. The inner and outer rings are spaced apart to def... | 08/08/1995 |
| 5386761 | Rotary valve actuator A valve actuator with an arcuate piston disposed within a housing including a side wall having a partition and two end plates whereby when joined, the housing forms a first and a second compartment. An arcuate piston travels between the compartments via a... | 02/07/1995 |
| 5297470 | Pneumatic rotary drive A pneumatic rotary drive includes a housing which is connectable to a pressure medium source and is closed in a pressure medium-tight manner by plane covers. A rotatable shaft extends out of the housing through at least one of the covers. A belt which is ... | 03/29/1994 |
| 5261320 | Pneumatic rotary drive A pneumatic rotary drive includes a housing and at least one cover sealingly closing the housing. A rotatable shaft extends out of the housing through the at least one cover. At least one guide member is mounted in the housing. A belt mounted in the housi... | 11/16/1993 |
| 5235900 | Rotary actuator device having an annular piston rod A rotary actuator device having an annular piston rod, the device comprising at least one piston held provided with sealing means and co-operating with an annular piston rod mounted so as to be capable of moving in an annular chamber, together with means ... | 08/17/1993 |
| 5224412 | Belt-driven rotary drive A belt-driven rotary drive having a belt closed upon itself which is connected, within a pressure fluid-tight housing over roller-shaped bodies with the formation of movable pressure chambers, to a rotatable shaft which is extended out of the housing and ... | 07/06/1993 |
| 5054374 | Rotary actuator A rotary actuator defining a first arcuate chamber and a second chamber, the housing having an inwardly projecting, peripherally extending rib which defines an aperture in open communication with the arcuate chamber, a peripherally extending groove being ... | 10/08/1991 |
| 5044257 | Rotary actuator and method for forming a rotary piston Improved techniques are provided for manufacturing a toroidal arc segment piston for use in a fluid pressure responsive rotary actuator, and for forming an actuator housing defining an arcuate chamber for receiving a rotary actuator piston. A moldable pol... | 09/03/1991 |
| 5007330 | Rotary actuator and seal assembly for use therein A rotary actuator comprising a housing which defines an arcuate chamber, the housing including a first monolithic portion in which the arcuate chamber is completely contained, a piston disposed in the housing for reciprocable movement in the arcuate chamb... | 04/16/1991 |
| 4995305 | Actuator employing a fluid under pressure for the driving in rotation of a rotary shaft An actuator having a tubular body with a cylindrical bore therein within which a piston reciprocates, an output shaft extending into said bore and a linkage for converting the linear movement of the piston into the rotary motion of said shaft. The linkage... | 02/26/1991 |
| 4982680 | Hydraulic actuator Hydraulic wing actuator for turning movement of a spindle, especially a rudder stock (3), comprising a lower part (2) fixed to the ship hull and an upper part (1) secured to the lower part and which together define a substantially torus shaped guiding pat... | 01/08/1991 |
