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| Number | Title | Issue Date |
| 7419456 | Device for increasing the functional reliability of a hydraulic circuit of a hydraulically operable clutch A known device for increasing the functional reliability for a hydraulic circuit of a hydraulic clutch having a pressure reservoir (25) and a release cylinder (5) which comprises a primary piston (14) and a secondary piston (16). A compen... | 09/02/2008 |
| 7360359 | Hydraulic system having an emergency release mechanism for a clutch having servo-assisted pedal actuation To disengage a clutch using the clutch actuation in the event of a failure of the system, having pedal force-assisted pressurization of the hydraulic system, composed of two hydraulic circuits, a master cylinder and a slave cylinder being essentially disposed in the... | 04/22/2008 |
| 7281331 | Spindle assembly for machine tools and method of fabricating same A spindle assembly for a machine tool comprising a housing having at least one bearing seat, a bearing having inner and outer races mounted in the bearing seat, a sleeve disposed between a race of the bearing and the housing, adhesively bonded to the housing, and a ... | 10/16/2007 |
| 7222708 | Clutch actuator A clutch actuator is provided for operating a clutch between a drive motor and a gearbox on a motor vehicle, in particular a commercial vehicle, including a linearly operating pin, acting on a release mechanism which is coaxial to a mid-axis of the clutch. The pin i... | 05/29/2007 |
| 7159704 | Hydraulic system A hydraulic system in a motor vehicle for operating a friction clutch is described, including a slave cylinder acting upon a spring plate of the clutch, and a manually or automatically operated master cylinder acting upon the slave cylinder. The hydraulic system inc... | 01/09/2007 |
| 7104376 | Clutch arrangement The invention relates to a clutch arrangement, in particular for a motor vehicle, comprising a housing arrangement which is filled or can be filled with fluid, at least one first friction member which is coupled with the housing arrangement for commonly rotating, at... | 09/12/2006 |
| 7094179 | Hydraulic transmission apparatus with lockup clutch A hydraulic transmission apparatus with a lockup clutch has a pump impeller, a turbine runner, a side cover, a lockup clutch, a clutch piston, a lockup control unit, a frictional engagement unit and a resilient member, a backward movement stopping unit, wherein a tr... | 08/22/2006 |
| 7086300 | Large stroke linear motion flexural apparatus Embodiments of the present invention are directed to a linear motion flexural apparatus to provide friction-free linear travel for large stroke motion. In one embodiment, a linear motion flexural apparatus comprises a first member having a first surface, and a secon... | 08/08/2006 |
| 7014028 | Drive device A drive device comprises a first switchgear (9) and a second switchgear (11) which can be actuated respectively hydraulic pressure in an opening direction and via spring force in a closing direction, and which are provided with a device (26) by ... | 03/21/2006 |
| 7001309 | Hydraulic transmission apparatus with lockup clutch A hydraulic transmission apparatus with a lockup clutch has a pump impeller, a turbine runner, a side cover, a lockup clutch, a clutch piston, a lockup control unit, a frictional engagement unit and a resilient member, a backward movement stopping unit, wherein a tr... | 02/21/2006 |
| 6907975 | Clutch, in particular for motor vehicle, with pneumatic control A clutch for a motor vehicle having an annular diaphragm (54) with a concave clutch characteristic curve and a pneumatic actuator (76) acting on the diaphragm (54) for clutch release. A mechanism (86, 88) is provided to generate a supplem... | 06/21/2005 |
| 6763922 | Clutch engaging and disengaging apparatus A clutch engaging and disengaging apparatus 1 is provided with a motor 2, a motion converting mechanism 3 that converts the rotational motion of the motor 2 into linear motion, a load storing mechanism 4 that stores a load when the... | 07/20/2004 |
| 6719116 | Air assisted vehicle clutch linkage Clutching arrangements for motor vehicle standard transmissions. The force required to clutch a vehicle transmission using a foot pedal is reduced by providing a compressed air actuated boost device attached to the clutch linkage. The degree of boost is selectable u... | 04/13/2004 |
| 6662919 | Method of and apparatus for the application of electric current to components of clutch actuating assemblies The engageable and disengageable friction clutch between the prime mover and the gearbox in the power train of a motor vehicle can be adjusted by an electric motor against the opposition of at least one resilient element by applying rest current from a so... | 12/16/2003 |
| 6607060 | Clutch operating system and a hydraulic mechanism used in the same A motorized clutch operating system in which it is possible to operate the clutch with a clutch pedal when there is a problem with the motor is provided. A clutch actuator 5 that serves as a mechanism for operating a clutch of a vehicle is equipped with a... | 08/19/2003 |
| 6595341 | Aluminum-coated plastic member A composite part of a clutch for use in a motor vehicle has a plastic carrier and a film of oxidized aluminum or an aluminum alloy overlying and adhering to that part of the carrier which is in sliding contact with at least one other part of the clutch. O... | 07/22/2003 |
| 6536573 | Clutch actuation system with auxiliary actuating assembly An actuation system for a friction clutch installed in the drive train of a motor vehicle between a drive unit and a transmission includes a pressure medium-powered cylinder assembly and a pilot/automatic control valve assembly. An auxiliary actuating ass... | 03/25/2003 |
| 6530463 | Clutch system installed in a transmission A transmission comprising at least one clutch (3, 4) which for closing can be actuated by a spring force and for opening can be actuated by a hydraulic pressure and the clutch can be shifted in a manner such that the pressure medium of an actuating device... | 03/11/2003 |
| 6450311 | Automatic operating apparatus for a friction clutch The object is to provide a small-sized automatic operating apparatus for a friction clutch. In an automatic operating apparatus 1 for a friction clutch in which the rotation of a motor 2 is reduced by a reduction mechanism 3 to rotate a crank 4, thereby a... | 09/17/2002 |
| 6443287 | Clutch A clutch for connecting a flywheel (1) on a drive shaft (2) of an engine with a driven shaft (15) of a gearbox. The flywheel (1) is connected to a clutch cover (7) and between them there is disposed an axially movable pressure plate (8). A clutch disc (9)... | 09/03/2002 |
| 6435327 | Disengaging device for a clutch A disengaging device particularly for a clutch, with an energy storage device supplying energy when the clutch is disengaged, and storing energy in a reversed process, has a device for increasing the energy in the energy storage in dependence upon a force... | 08/20/2002 |
| 6405837 | Combined parking and service brake The present disclosure relates to a braking device having a service brake and a parking brake. The braking device includes a housing and a shaft that extends at least partially through the housing. The shaft is rotatable relative to the housing about a lo... | 06/18/2002 |
| 6397994 | Powershift transmission with engine clutch assembly An automated powershift multi-speed transmission adapted to transfer power from the engine to the driveline of a motor vehicle. The transmission includes an engine clutch assembly having a primary clutch operable to establish a releasable drive connection... | 06/04/2002 |
| 6298968 | Hydraulic transmitter with incorporated reservoir and hydraulic control comprising such a transmitter A transmitter for hydraulic control controlled by a controlling member including a hydraulic chamber having a piston mounted thereto by means of a joint. The hydraulic chamber defines a pressure chamber with variable volume connected to a hydraulic line. ... | 10/09/2001 |
| 6290045 | Actuating mechanism for a clutch An actuating mechanism for a clutch implements an operator-dependent clutch actuation by sensing and transmitting an operator force signal, in the form of a target-value for the control circuit representative of the operator force, to a closed loop contro... | 09/18/2001 |
| 6227342 | Motorcycle clutch system A hydraulic clutch assembly for a motorcycle having a handlebar, an engine, and a clutch, includes a master hydraulic cylinder assembly, a slave hydraulic cylinder assembly, and a hydraulic line adapted to communicate hydraulic fluid pressure between the ... | 05/08/2001 |
| 6213271 | Compact disengaging device for clutches A disengaging device for a clutch with an energy store that releases energy upon disengagement and stores energy upon re-engagement. This device is compactly constructed and allows force to be advantageously reinforced. Mechanisms are used to increase the... | 04/10/2001 |
| 6105743 | Method and apparatus for regulating the transmission of torque in power trains A method of monitoring a torque transmission system with a manually switchable gearbox in the power train of a motor vehicle involves the utilization of at least one sensor unit at the input side of the torque transmission system to ascertain relevant pos... | 08/22/2000 |
| 6032776 | Automatic operating apparatus for a friction clutch An automatic clutch operating control apparatus which can rapidly perform the disconnection of a friction clutch of a transmission by the assistance of the accumulated load in a coil spring. Comprising a motor 4 rotatable forward and backward; reduction m... | 03/07/2000 |
| 6026945 | Automatic operating apparatus for a friction clutch An automatic operating apparatus for a friction clutch is disclosed which apparatus performs the disconnection of the clutch of a transmission by the assistance of the accumulated load in a load accumulator which can perform the accumulation and the relea... | 02/22/2000 |
| 6015361 | Differential apparatus with two wheel/four wheel drive switching mechanism A differential apparatus includes a differential casing, a pair of output side gears disposed in the differential casing, a differential mechanism distributing driving force of an engine, a clutch for operatively connecting the differential casing with th... | 01/18/2000 |
| 5950788 | Operating device for operating a friction clutch An operating device of a friction clutch arranged in the drive train of a motor vehicle, having a positioning servo arrangement with a pressure medium power cylinder arrangement located inside the housing bell and acting on a clutch release bearing arrang... | 09/14/1999 |
| 5944159 | Hydraulic actuating drive Hydraulic actuating drive for a clutch, including a control unit, a hydraulic pump which can be driven by a drive and which feeds a pressure accumulator, and an actuating cylinder which is connected via a control valve with the pressure accumulator. The d... | 08/31/1999 |
| 5934432 | Actuator system for vehicle automated clutches with electric motor actuator and pressurized fluid override An actuator system (31) for controlling engagement and disengagement of an automated vehicular master clutch (C). The system includes an electric motor (86) controlled actuator (62) for precision positioning of the clutch and a pneumatically controlled ov... | 08/10/1999 |
| 5906256 | Automatic clutch unit for vehicle use An automatic clutch unit for vehicle use includes a slave cylinder to engage and disengage a friction clutch, an automatically operated hydraulic fluid feed mechanism to be operated by a pump, selectively connected with the slave cylinder, a manually oper... | 05/25/1999 |
| 5899309 | Hydraulic clutch control, notably for motor vehicles Hydraulic clutch control, having a clutch release fork (25), a control member (8) capable of acting in traction on the clutch release fork (25), a hydraulic receiver (1) having a fixed cylinder (2) mounted on a counter-support (5) and a piston (4) engaged... | 05/04/1999 |
| 5887692 | Hydraulic pressure cylinder with combined boot and spring A slave cylinder particularly suited for use in a hydraulic clutch release system for a motor vehicle. The cylinder includes a spring boot which serves as both a dust boot and a preload spring device. In one embodiment of the invention, the cylinder is an... | 03/30/1999 |
| 5860502 | Hydraulically operated clutch assembly for a motor vehicle having a detachable plug-type connector A detachable plug-type connector, in particular for the connection of a pressure line to a hydraulic cylinder with a pin-shaped inner part, which pin-shaped inner part can be inserted in a boring of an outer part. Between the outer part and the inner part... | 01/19/1999 |
| 5839561 | Automatic clutch system An automatic clutch system includes an operating cylinder which is interconnected through a release lever with a friction element engaging mechanism. The operating cylinder is communicated with a master cylinder and an auxiliary cylinder through a hydraul... | 11/24/1998 |
| 5810142 | Flow control valve for rotating component A valve for flow control with a flow recess and with a valve seat inside the flow recess is located beyond the axis of rotation of a rotating component and extends parallel to the axis of rotation. Inside the flow recess there is a movable valve body whic... | 09/22/1998 |
