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| Number | Title | Issue Date |
| 7930971 | Rotary actuator with internal brake mechanism A vane type hydraulic rotary actuator incorporates a fail-safe brake for preventing movement of the device's rotor relative to a housing in which the rotor is journaled. The brake has a spring-biased piston that is forced to a locked condition whenever applied hydra... | 04/26/2011 |
| 7343887 | Apparatus for abnormal diagnosis of variable valve timing mechanism An abnormality diagnosis system 100 includes a VVT controller 110, an adjustable valve mechanism 120, a cam angle sensor 130, a model computation module 140, an abnormality detection module 150, and an alarm lamp 160.... | 03/18/2008 |
| 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 |
| 7275476 | Oscillating motor for a camshaft adjusting device An oscillating motor for a camshaft adjusting device has a stator and a rotor mounted so as to be rotatable relative to one another. The stator has an inner wall and radially extending stator vanes connected to the inner wall. The rotor has a base member and radiall... | 10/02/2007 |
| 7231867 | Rotary damper A rotary damper for damping oscillation of a motorcycle front tire includes a vane swingably mounted inside the rotary damper between left and right oil chambers, passages placing the oil chambers in fluid communication with one another, front chambers in communicat... | 06/19/2007 |
| 7231865 | Swiveling motor A swiveling motor for a divided stabilizer in an area of a vehicle axle, in which a housing is closed off in a region of its end surfaces by lids. A differential pressure regulating valve located coaxially with the housing and having at least one electromagnet, and ... | 06/19/2007 |
| 7182052 | Valve timing controller A shoe housing receives a driving force from a crankshaft and a vane rotor rotates with a camshaft in combination. The vane rotor is received in the shoe housing in such a way as to freely turn. Each of the vanes of the vane rotor partitions each of three receiving ... | 02/27/2007 |
| 7175403 | Integrated select high pressure valve A rotary actuator includes one or more rotor vanes (40); an endplate (60); a corner seal (30) being positioned between the rotor vanes (40) and the endplate (60); a vane seal (20); a high pressure chamber and a low pressure ... | 02/13/2007 |
| 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 |
| 7150251 | Valve timing control apparatus The invention intends to improve a response by utilizing a rotational variable torque of a cam shaft. Communication paths respectively communicating an advance hydraulic chamber and a retard hydraulic chamber provided in a second rotary member and a hydraulic connec... | 12/19/2006 |
| 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 |
| 7127980 | Vane, valve timing control device, and sliding member A vane, a valve timing control device at least including a vane, or a sliding member include at least one of chromium and manganese with 10–20 weight %, and carbon with 0.70 weight % or less wherein the vane is formed by nitriding treatment. ... | 10/31/2006 |
| 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 |
| 7021257 | Compensating for VCT phase error over speed range A method for compensating for variable cam timing of an internal combustion engine is provided. The method includes: a) providing a periodical crank pulse signal; b) providing a periodical cam pulse signal; c) determining a segment, wherein the internal combustion e... | 04/04/2006 |
| 6971351 | Valve timing adjusting device A region including an engaging hole is given surface treatment such as partial quench hardening by induction hardening for improving surface hardness of the region. The partial quench hardening by induction hardening provides the region with satisfactory mechanical ... | 12/06/2005 |
| 6920855 | Valve timing adjustment device A valve timing adjustment device for promptly switching a rotational phase includes a guide rotary body having a guide passage containing a movable body. The guide passage includes a variable radial dimension relative to a rotational centerline. The guide rotary bod... | 07/26/2005 |
| 6915767 | Method of determining the position of a cam phaser A method of determining the position of a cam phaser determines and stores an adaptively updated base offset corresponding to the phase offset of a camshaft relative to a crankshaft for a reference or default position of a cam phaser. Thereafter, the phaser position... | 07/12/2005 |
| 6883478 | Fast-acting lock pin assembly for a vane-type cam phaser A fast-acting rotor-locking mechanism for a vane-type camshaft phaser. A straight-sided locking pin is disposed in a bushing in the rotor and is urged into a sprocket well by a return spring. A pad disposed at the bottom of the well is a travel stop for the pin. Whe... | 04/26/2005 |
| 6880451 | Oscillating motor An oscillating motor includes a cylinder which is filled with hydraulic medium and which has at least one rib on its inside wall, whereby a motor shaft with at least one vane is supported inside the cylinder with freedom to oscillate, a sleeve concentric to the moto... | 04/19/2005 |
| 6863037 | Control unit for variable valve timing mechanism A controller that outputs control signals to an actuator of a variable valve timing mechanism is integrally equipped with a cam sensor that takes out from a camshaft signals for discriminating a cylinder corresponding to a reference piston position. The controller d... | 03/08/2005 |
| 6769386 | Adjusting element for a rotary piston The invention concerns a rotary piston adjuster for adjusting the angular position of the camshaft of an internal combustion engine, said adjuster comprising an outer rotor having at least one hydraulic chamber, and an inner rotor comprising at least one pivoting va... | 08/03/2004 |
| 6606936 | Hybrid actuator A hybrid of the pneumatic and hydraulic actuators for combining pneumatically powered actuation with incompressible and controllable hydraulic damping in order to achieve smooth displacement, rapid stopping and steady and accurate positioning of the hybri... | 08/19/2003 |
| 6546842 | Power unit for positioning valves, or the like, into desired position A pressure-fluid-operated power unit producing a rotating motion for positioning valves or similar actuators into a desired position. The power unit comprises an annular cylinder space and at least two pairs of pistons arranged to move in said cylinder sp... | 04/15/2003 |
| 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 |
| 6450082 | Shot pin A fluid device includes a rotationally oscillating piston within a sector-shaped chamber, a reciprocating ram for performing work and a link pivotally connected to both the piston and the ram. The piston moves the ram through the link to an extended posit... | 09/17/2002 |
| 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 |
| 6289787 | Vane actuator The vane actuator according to the present invention is capable of operating effectively at a working pressure greater than 100 psig. The vane actuator comprises a vane shaft rotatably extending through a casing and a vane disposed within the casing defin... | 09/18/2001 |
| 6179545 | Flip-over ramp A flip-over ramp assembly is normally stowed in a horizontal position in a recess in a vehicle floor, and can be pivoted upward and outwards to a downward sloping deployed position, after the vehicle door has been opened. The flip-over ramp assembly compr... | 01/30/2001 |
| 6098517 | Rotary linear unit A rotary linear unit possesses a rotary drive and a linear drive. A bearing rod is connected with the drive shaft of the rotary drive, such bearing rod extending coaxially into the output drive unit of the linear drive. On the bearing rod a bearing sleeve... | 08/08/2000 |
| 6085635 | Safety device for pneumatic actuators The invention relates to a safety device for pneumatic actuators, for preventing the actuator pinion from being violently ejected, comprising a circular seat, formed on the less diameter portion of the pinion, projecting from the actuator body, and housin... | 07/11/2000 |
| 6030185 | Radial piston pump The present invention relates to a pump, more particularly a radial piston pump, including at least two pump pistons (10) with an associated working chamber (13) each, wherein the working chambers (13) are connected to suction lines (4) by way of suction ... | 02/29/2000 |
| 5979163 | Rotationally pivotal motion controller A rotationally pivotal motion controller pivotally interconnects two adjoining elements and controls the pivotal motion of a first of the two adjoining elements with respect to a second of the two adjoining elements. The rotationally pivotal motion contro... | 11/09/1999 |
| 5956901 | Gas driven hatch cover assembly A hatch assembly having a hatch cover biased to a normally closed position. The hatch cover is connected to an impeller contained and rotatable within a impeller chamber of a housing. When the cover is to be opened, pressurized gas is introduced into the ... | 09/28/1999 |
| 5848565 | Radial piston machines A radial piston hydrostatic machine having an outer housing structure and defining an internal chamber, a drive-shaft supported in the housing and operatively connected to the cylinder-barrel, the cylinder-barrel having a number of radial cylinders, each ... | 12/15/1998 |
| 5823092 | Rotary actuator with mating housing halves Rotary actuator (1) including a housing (2), which defines a working chamber (3) with at least partially circular section for actuation with a pressure fluid, a pivoting piston (5) which is sealingly arranged against the inner wall of and pivotable betwee... | 10/20/1998 |
| 5813316 | Rotary hydraulic actuator In a rotary hydraulic actuator wherein a hermetic casing has the inside divided into a first hydraulic chamber and a second hydraulic chamber by a vane slidably rotatable on an inner curved wall of the casing, the vane is rotatable by an oil pressure supp... | 09/29/1998 |
| 5809955 | Hydraulic actuator and variable valve driving mechanism making use of the same A hydraulic actuator is provided with a housing with an oil compartment formed therein; a power output shaft rotatably supported on the housing and extending out from an interior of the oil compartment to an exterior of the housing; a vane radially extend... | 09/22/1998 |
| 5732613 | Fluid operated rotary drive with position detector A fluid operated rotary drive, which possesses a drive means having an output drive shaft able to be driven for oscillating motion. On one axial side of the drive means a position detection means is arranged, which possesses an actuating member connected ... | 03/31/1998 |
| 5701799 | Plural rotary actuators A rotary actuator (1) comprising a housing (2), which defines a working chamber (3) for actuation with a pressure fluid and having at least partially circular section, a pivoting piston (5) which is arranged sealingly against the inner wall (4) of and rot... | 12/30/1997 |
| 5634392 | Pressure medium operable cylinder/piston unit In a pressure medium operable cylinder/piston unit for the provision of at least one rotary movement, comprising a cylinder bore (8) having inside it a radially internally projecting partition wall (4) and a vane piston (5) which projects radially outward... | 06/03/1997 |
