Clutches and power-stop control inventions 09/07

20070221468 - Hydraulically actuated double clutch: A clutch apparatus including a first bearing connected to a front side of the clutch apparatus, and a second bearing connected to a cover for the clutch apparatus. The first bearing is arranged to be piloted on a front cover for a transmission and the second bearing is arranged to... Agent: Simpson & Simpson, PLLC

20070221463 - Hydrodynamic coupling: The invention relates to a hydrodynamic coupling comprising a primary impeller and a secondary impeller, said impellers forming a toroidal working chamber. The primary impeller is located on a drive shaft or is integrated into said shaft. The invention is characterized in that the drive shaft is equipped with at... Agent: Ohlandt, Greeley, Ruggiero & Perle, LLP

20070221462 - Method for learning the flow rate of hydraulic fluid in an automatic transmission: The present invention provides a method for approximating the flow rate of hydraulic fluid in an automatic transmission. The method includes estimating a flow rate value for each of a plurality of temperatures. Thereafter, the current transmission temperature is measured. The flow rate corresponding to the current transmission temperature is... Agent: General Motors Corporation Legal Staff

20070221464 - Clutch device with buffer function: A clutch device with a buffer function comprises a first spindle having an engaging surface; a second spindle having a rack at a side near the first spindle; the second spindle movably engaged to the first spindle; a clutch sleeve enclosing the second spindle; a front side of the clutch... Agent: Jen-chih Liu

20070221465 - Multi disc friction clutch and motorcycle therewith: A multiple disc friction clutch comprises a clutch outer for take in power, a clutch hub for take out power, friction plates, a clutch spring pressing a pressing member to the friction plates for connecting the clutch, a spring receiving member supporting the clutch spring, and a coupling hub coupled... Agent: Wenderoth, Lind & Ponack, L.L.P.

20070221467 - Control method and apparatus for a transmission clutch system: The present invention provides a more efficient method for maintaining the hydraulic actuation of a selectively engageable torque transmitting device in a vehicle. The method includes generating a predetermined pressure level of a hydraulic fluid such as, for example, with a pump. The pressurized hydraulic fluid is transferred through an... Agent: General Motors Corporation Legal Staff

20070221466 - Clutch actuation method and apparatus: A clutch actuation method and apparatus is provided. In one embodiment, a slave cylinder is mounted about a transmission input shaft, with a release bearing coupled to a first end of the slave cylinder, the release bearing having a release face structured to contact the release spring in the clutch... Agent: Peter Martinez

20070215429 - Thrust member for synchronizing devices: A synchronizing device in gear shift transmissions has a gear (28), a shift sleeve (30) which is displaceably engaged with the gear (28) by internal teeth (32), and thrust members (10) disposed between the gear (28) and the shift sleeve (30), each of the thrust members having a casing (12)... Agent: Richard M. Goldberg

20070215428 - Electrohydraulic torque transfer device and control system: A power transmission device includes a rotatable input member, a rotatable output member, a friction clutch to selectively transfer torque between the input member and the output member, an actuator providing an actuating force to the friction clutch and a controller. The actuator includes an electric motor having an output... Agent: Harness, Dickey & Pierce, P.L.C

20070215430 - Power take-off having an axially movable bearing: A power take-off includes an axially movable bearing that facilitates the assembly of the power take-off without the use of shims or other axial adjustment devices. The power take-off includes a housing, an input mechanism that is supported for rotation on the housing, and an output mechanism that is supported... Agent: Macmillan Sobanski & Todd, LLC

20070215431 - Hydraulic controlled fan clutch with integral cooling: A hydraulically controlled fan drive system (12) having a method of engagement includes a housing assembly (20) containing a hydraulic fluid (48) and an engaging circuit (36). The engaging circuit (36) includes a pitot tube (152) coupled within the housing assembly (20) that receives at least a portion of the... Agent: Artz & Artz

20070215432 - Clutch device for automatic speed changer: A clutch device for an automatic transmission includes a clutch drum, first and second frictional coupling elements, both supported by the clutch drum, a first piston axially movably disposed radially outwardly of the clutch drum and operating to couple the first frictional coupling elements, and a second piston axially movably... Agent: Oblon, Spivak, Mcclelland, Maier & Neustadt, P.C.

20070209897 - Hub and synchronizer ring assembly: A synchronizer ring assembly includes: a synchronizer ring formed with at least one inner peripheral portion; and a hub having an outer peripheral wall at a center of the hub. The synchronizer ring is arranged facing the hub and is coupled with the hub in a spigot manner with the... Agent: Buchanan, Ingersoll & Rooney PC

20070209898 - Process and device for controlling and/or regulating an automated clutch: In a process which is for controlling and/or regulating an automated clutch, in particular in the drive train of a vehicle, and in which an actuating element, whose position determines the clutch torque transmissible by the clutch, is actuated for setting a predefined clutch torque according to a characteristic curve,... Agent: Simpson & Simpson, PLLC

20070209901 - Process and device for monitoring the operation of a clutch moved by an actuator into the closed position and automatically moving into the open position: In a clutch which is impelled by an actuator into the closed position and which automatically moves into the open position by an opening spring, the movement of the clutch into the open position is monitored and any malfunction is displayed.... Agent: Simpson & Simpson, PLLC

20070209900 - Process and device for the reduction of clutch-grabbing oscillations in a motor vehicle drive train:

20070209896 - Rotational coupling device: A rotational coupling device for use as a clutch and/or brake is provided having a modular construction enabling relatively easy variation of braking torque and having improved magnetic efficiency during brake engagement and release. The device includes one or more brake modules attached to a mounting bracket to vary braking... Agent: Dykema Gossett PLLC

20070209899 - Decoupling vibration isolator: A decoupling vibration isolator comprising a driver member, a driven member, a retaining member immovably attached to the driver member and having a sliding engagement with the driven member to allow predetermined rotational movement of the driven member with respect to the driving member, an energy absorbing member disposed between... Agent: Jeffrey Thurnau The Gates Corporation

20070209902 - Electrorheological inertia brake: An electrorheological inertia brake for a manual or automated mechanical transmission provides improved control of the speed of input shafts and countershafts during shifts and extends the service life of the transmission. The electrorheological inertia brake includes a housing defining a cavity filled with electrorheological fluid. A shaft coupled to... Agent: Brinks Hofer Gilson & Lione

20070209903 - Parking lock releasing apparatus: A parking lock releasing apparatus includes a manipulator element operable to select a parking range of an automatic transmission, a sensor operable to detect a selection by the manipulator element, an actuator operable to operate a parking lock mechanism of the automatic transmission based on a detection by the sensor,... Agent: Arent Fox PLLC

20070205067 - Hydrodynamic clutch device: A hydrodynamic clutch includes a housing which can be brought into working connection with a drive; a hydrodynamic circuit formed by a pump wheel and a turbine wheel; a torsional vibration damper having a drive side transmission element, a takeoff side transmission element, and at least one energy storage group... Agent: Cohen, Pontani, Lieberman & Pavane

20070205074 - Clutch release device for a friction clutch of a motor vehicle with a fail-safe system: A clutch release device for the friction clutch of a motor vehicle includes a sliding sleeve which can shift position axially on a guide tube, and a roller bearing positioned on the sliding sleeve. The roller bearing includes a first bearing ring, which can rotate with a clutch release element,... Agent: Cohen, Pontani, Lieberman & Pavane

20070205073 - Clutch release device for a friction clutch of a motor vehicle with a multi-part sliding sleeve: A clutch-release device for a friction clutch of a motor vehicle includes a guide tube and a sliding sleeve, which is free to shift position axially on the tube, the sleeve having a contact area for absorbing the actuating force of an actuating element. A clutch-release bearing is mounted on... Agent: Cohen, Pontani, Lieberman & Pavane

20070205068 - Clutch device with sprags: The invention relates to a coupling device for establishing a couplable connection between two rotationally mounted machine parts, particularly a first shaft and a second shaft. To this end, the second shaft comprises a coupling ring that, on the inside, has tensioning bodies, which act against each another in pairs... Agent: William Collard Collard & Roe, P.C.

20070205069 - One-way pawl clutch with backlash reduction means and without biasing means: One-way clutches primarily employ a driving ring, a driven ring, and a number of identical connectors. The driving ring and the driven ring are rotationally detached, are concentric, and are configured to house the connectors between them. In one rotational direction, the connectors engage the driving and the driven rings,... Agent: Hossein Keshtkar

20070205070 - Integrated clutch assembly damper arrangement: A clutch assembly and damper arrangement is provided that includes a driver hub and a driven element coupled to the driver hub by a compliance element. A clutch is provided that is selectively engageable to the driven element. The clutch has a housing supporting the compliance element and is torsionally... Agent: Warn, Hoffmann, Miller & Ozga, P.C.

20070205071 - Viscous fan drive having modified land design and armature venting: A viscous fan drive in which the output drive to the fan is controlled by the movement of viscous fluid from a fluid reservoir and into the operating and working chamber of the coupling during normal operation. The input-coupling assembly and cover member are formed with a unique combination of... Agent: Borgwarner Inc. C/o Artz & Artz, P.C.

20070205072 - Hydraulic clutch control system, comprising servo means which are disposed between the master cylinder and the slave cylinder of the system: The invention relates to a system for the hydraulic control (10) of a clutch (12), e.g. a motor vehicle clutch, comprising an upstream master cylinder (14) which is connected to a down-stream slave cylinder (18) by means of a conduit (16). The invention is characterized in that the system comprises... Agent: Liniak Berenato & White

20070205075 - Segment-type friction material: A segment-type friction material has blocks each composed of four segment pieces. Five blocks are stuck by adhesion to a core metal 2 along an entire circumference thereof so as to constitute one surface of the segment-type friction material. Gaps are provided between the five blocks to form oil grooves... Agent: Buchanan, Ingersoll & Rooney PC

20070205076 - Friction member for frictional emgagment device and method for producing the same: A friction member for a frictional engagement device is provided in which weight is reduced, impact resistance is enhanced and sliding resistance is improved; and also provided is a method for producing the same. As a friction member (10) for a frictional engagement device, a friction member made of a... Agent: Arent Fox PLLC

20070205077 - Rotation output device: The present invention has an object of providing a rotation output device, including a lock mechanism employing a movable lock member so as to define the lock position, which is capable of, when the operator operates an output shaft to pivot, preventing the movable lock member from being concomitantly rotated... Agent: Greenblum & Bernstein, P.L.C