Clutches and power-stop control inventions 05/07

20070119674 - Lockup clutch: A lockup clutch for a torque converter is provided with a friction lining. The friction lining is divided into a radially-outer-side friction lining and a radially-inner-side friction lining. μ-ν characteristics of the radially-outer-side friction lining have a positive gradient to inhibit occurrence of a shudder which takes place by a... Agent: Crowell & Moring LLP Intellectual Property Group

20070119675 - Lockup clutch: A lockup clutch for a torque converter is provided with a friction lining. The friction lining is divided into a radially-outer-side friction lining and a radially-inner-side friction lining. μ-ν characteristics of the radially-outer-side friction lining have a positive gradient to inhibit occurrence of a shudder by a stick-slip which takes... Agent: Crowell & Moring LLP Intellectual Property Group

20070119676 - Overrunning clutch: In an overrunning clutch (1), an annular space is formed between an inner raceway (3) and an outer raceway, in which annular space is arranged a cage (5) which has cut-outs (4) for holding clamping bodies (2), with each cut-out (4) being delimited by transverse webs (10) which run in... Agent: Lucas & Mercanti, LLP

20070119677 - Electrical activation of a viscous clutch: A system for controlling the engagement and disengagement of a viscous type coupling is accomplished by controlling the relative positioning of a spring loaded valve arm relative to a fluid port through the use of an electrically-activated, temperature-sensitive member, such as a NiTi wire. The characteristics of shape memory alloy... Agent: Borgwarner Inc. C/o Artz & Artz, P.C.

20070119678 - Multi-position clutch: A multi-position clutch allows selectively coupling at least two of at least three rotatable shafts is described herein. The clutch comprises at least three cooperation elements respectively associated to one of the at least three rotatable shafts for selective engagement therebetween; the at least three cooperation elements are mounted to... Agent: Fulbright & Jaworski L.L.P.

20070119679 - Multiplate clutch device and clutch disk assembly: A multi-plate clutch device is for transmitting and cutting off, with respect to a transmission input shaft, power from an engine flywheel. The multi-plate clutch device is disposed with a clutch disk assembly and a clutch cover assembly that includes a pressure plate for pressing the clutch disk assembly towards... Agent: GlobalIPCounselors, LLP

20070114105 - Hydraulic clutch actuation system: A hydraulic clutch actuation system having a hydraulic clutch control device which includes at least one clutch master cylinder that communicates via a pressure-medium line with a clutch slave cylinder used for actuating a clutch device, the pressure prevailing in the pressure-medium line being relievable via at least one emergency... Agent: Davidson, Davidson & Kappel, LLC

20070114106 - Method of controlling a torque-transmitting mechanism and clutch capacity control system: A method of controlling a torque-transmitting mechanism in a multi-speed transmission includes providing structure forming a pressurizable reaction chamber at a reaction surface of an apply piston opposing an apply surface of the piston. The reaction chamber is pressurized to a first pressure during engagement of the torque-transmitting mechanism to... Agent: General Motors Corporation Legal Staff

20070114107 - Dog clutch: A dog clutch includes a first engagement face and a second engagement face provided on a surface of a driving rotor and a driven rotor with the two surfaces being opposite each other. The first engagement face engaging with its counterpart when a driving force of the driving members is... Agent: Birch Stewart Kolasch & Birch

20070108006 - Torsional vibration damper for a hydrodynamic clutch arrangement: The torsional vibration damper acting between a drive and a housing of a hydrodynamic clutch arrangement includes a flywheel mass element, a drive-side damping element having a first side connected nonrotatably to the flywheel mass element, a takeoff-side damping element, the second side of the drive-side damping element being connected... Agent: Cohen, Pontani, Lieberman & Pavane

20070108007 - Lock-up clutch mechanism: The present invention provides a lock-up clutch mechanism for a torque converter, comprising a lock-up piston and a front cover opposed to the lock-up piston and wherein a friction material having a friction surface is secured to one of the lock-up piston and the front cover, and the friction surface... Agent: Miles & Stockbridge PC

20070108008 - Continuously adjustable rotation device: A continuously adjustable rotation device includes a base, a first connection element combined with the base, a ring buckle, a transmission disc, a second connection element, and a rotation controller. The transmission disc is formed on the contacting portion of the base, forming an inclination angle and contacting the second... Agent: Hdsl

20070108009 - Drive force transmission device: A drive force transmission device has an outer clutch plate and an inner clutch plate, which are rotatable relative to each other about a common rotational axis. The inner and outer clutch plates become frictionally engaged with each other with lubricant oil provided in between. The outer and inner clutch... Agent: Oblon, Spivak, Mcclelland, Maier & Neustadt, P.C.

20070108010 - Self energising clutch: A self energizing clutch includes a shaft (26), a clutch disc (14) on the shaft, engaging elements (30, 32) for disengaging and engaging the disc from and with structure adjacent the disc, and an actuator (34) for moving the engaging elements between its disengaged and engaged positions. The engaging elements... Agent: Young & Thompson

20070108011 - Low power modulating clutch control system: A power transmission device includes a rotary input member adapted to receive drive torque from a source of torque, a rotary output member adapted to provide drive torque to an output device and a torque transfer mechanism operable to transferring drive torque from the input member to the output member.... Agent: Harness, Dickey & Pierce, P.L.C

20070102254 - Fluid-operable rotary drive clutch: The present invention concerns a rotary drive clutch that is fluid-operable by a piston/cylinder unit rigidly coupled to a clutch shaft and bearing-mounted so as to rotate therewith.... Agent: Scott R Foster Pandiscio & Pandiscio

20070102255 - Ratcheting mechanism: A ratcheting mechanism for a hand-held tool is provided. The mechanism includes a housing having a central opening and a pair of slots disposed on opposite sides of the opening. Each slot has an arcuate or circular end portion opposite the central opening which circumscribes an arc of greater than... Agent: Boyle Fredrickson Newholm Stein & Gratz, S.c.

20070102256 - Electro-slip clutch: An electro-slip clutch may include a friction stack for receiving input rotation from an input shaft and a surrounding hub and for attaching to an output member. A bearing surface may be provided adjacent the friction stack and a solenoid may further be provided. The solenoid may include a plunger... Agent: Cantor Colburn, LLP

20070102257 - Clutch-purpose hydraulic servo: In a hydraulic servo for a clutch, a cancel plate is disposed on a second clutch drum that undergoes the same rotation as a second clutch drum provided with a cylinder portion, in such a fashion that the cancel plate is restricted from moving to a side opposite from a... Agent: Oliff & Berridge, PLC

20070102258 - Friction plate and wet-type multi-plate clutch: The present invention provides a friction plate having a friction surface formed by adhering a friction material to a substantially annular core plate and wherein the friction surface is provided with an oil passage communicated with inner and outer peripheral edges of the friction plate, a first oil groove having... Agent: Miles & Stockbridge PC

20070095625 - Electromagnetic inertia brake for a power input shaft of a power transmission mechanism: An electromagnetic brake for an input shaft of a vehicle transmission is disclosed. The brake includes an armature separated from an electromagnetic coil pole face by a controlled air gap. A spring release feature ensures precise armature disengagement when the brake is deactivated. A wear compensation feature maintains uniformity of... Agent: Donald J. Harrington Brooks Kushman P.C.

20070095626 - Wear indicating friction disc: A wear indicating friction disc assembly includes at least two friction discs and may include a plurality of clamping assemblies positioned around a circumference of the friction discs to clamp at least two of the friction discs together. At least one of the clamping assemblies may include a wear indicating... Agent: Timothy J. Klima Harbin King & Klima

20070095627 - Externally-controlled fluid coupling: An externally-controlled fluid coupling includes a driving disk fixed to a driving rotational shaft, a case member and a cover member rotatably supported by the rotational shaft, a separating plate for forming an operation chamber and a storage chamber between the case member and the cover member, a supply passage... Agent: Reed Smith LLP Suite 1400

20070095628 - Power-operated clutch actuator for torque transfer mechanisms: A torque transfer mechanism is provided for controlling the magnitude of a clutch engagement force exerted on a multi-plate clutch assembly that is operably disposed between a first rotary and a second rotary member. The torque transfer mechanism includes a power-operated clutch actuator for generating and applying a clutch engagement... Agent: Harness, Dickey & Pierce, P.L.C

20070095629 - Centrifugal clutch: A centrifugal clutch includes a clutch weight in a plane perpendicular to a rotation axis of an input member for enabling friction fitting to an inside of a clutch housing. The clutch weight is turnably supported by a drive plate. A grooved portion is provided on a clutch weight in... Agent: Birch Stewart Kolasch & Birch