Patent application number | Description | Published |
20080277228 | Sealing system and wet-running dual-clutch system with a sealing system - A sealing system with at least one sealing device for a pressurizing-agent-operable actuating device, for sealing off a pressure chamber assigned to the latter from the surroundings. The individual sealing element being placed in a groove formed by the actuating device and a thin sheet metal element connected to the actuating device, where at least two contact surfaces that describe the groove are formed on the actuating device for the sealing element. | 11-13-2008 |
20080314711 | Clutch and brake latch mechanism - A clutch including: a first piston displaceable to operate a clutch pack; a second piston; a first fluid chamber partially formed by the pistons, wherein the second piston is displaceable by fluid pressure in the first fluid chamber; and a locking means fixable by the second piston to hold the pack closed. In a preferred embodiment, the locking means includes at least one displaceable ball. In another preferred embodiment, in response to a loss of fluid pressure in the first chamber, the second piston is displaceable to enable displacement of the locking means to open the pack. In a further preferred embodiment, the clutch includes a second chamber, separate from the first chamber and partially formed by the first piston. The first piston is displaceable in response to fluid pressure in the second chamber. The pack remains closed after a loss or reduction of fluid pressure in the second chamber. | 12-25-2008 |
20090071787 | Latching frictional engagement assembly using a check valve - A frictional engagement assembly for an automotive device, including: at least one frictionally engageable plate; a first piston plate displaceable in a first axial direction to urge the at least one frictionally engageable plate into frictional contact; a first resilient element engaged with the first piston plate and urging the first piston plate in a second axial direction substantially opposite the first axial direction; a check valve controlling fluid flow to displace the first piston plate; and an accumulator. As fluid from a chamber, at least partially formed by the first piston plate, discharges through the check valve, the accumulator controls fluid volume in the chamber to maintain a distal portion of the first piston plate, urging the at least one frictionally engageable plate into frictional contact, in a furthest position in the first axial direction. | 03-19-2009 |
20090113885 | Integrated torque converters and assemblies - More efficient, economic vehicular torque converters comprising novel integrated one-piece turbine/impeller blade-core assemblies with innovative fluid coupling means for greater torque capacities. | 05-07-2009 |
20090157272 | Four-passage multifunction torque converter - A torque converter including: an impeller clutch arranged to transmit, when closed, torque from a first cover for the torque converter to a shell for an impeller; a lock-up clutch arranged to transmit, when closed, torque from a second cover for the torque converter to an output hub; a release chamber for the impeller clutch, connected to a first channel; an apply chamber for the impeller clutch, connected to a second channel; an apply chamber for the lock-up clutch, connected to a third channel; and a torus connected to a fourth channel. The second, third, and fourth channels open to a space including a longitudinal axis for the torque converter and the space is arranged to receive an input shaft for a transmission. The first channel is arranged to connect to a line in a pump housing for a transmission. | 06-18-2009 |
20090260943 | Clutch unit - A clutch unit with a clutch hub mounted non-rotatably on a shaft. The clutch unit includes at least two clutch elements that can be brought into frictional engagement with one another for torque transmission when the clutch unit is actuated by a mechanical actuation device with the help of cable-pull. The mechanical actuation device is attached to and held on the clutch unit. | 10-22-2009 |
20100075794 | TRANSMISSION ACTUATION SYSTEM - A transmission system without dynamic seals, specifically, an actuator for a vehicle transmission including a first rotating clutch pack engageable with a planetary gearset a first non-rotating actuator piston for engaging the clutch pack and a first bearing for isolating a first rotation of the clutch pack from the piston. A transmission system is provided using an electromechanical system for shifting the clutches, allowing a smaller pump only for lubrication of the transmission and the torque converter flow. | 03-25-2010 |
20100170765 | Clutch unit - A clutch unit including a clutch hub that is non-rotatably mounted to a shaft. The clutch unit has at least two clutch elements that can be brought into frictional engagement with one another in order to transmit torque when the clutch unit is actuated through a mechanical actuation device. The actuation device is mounted and supported at the clutch unit. | 07-08-2010 |
20100206682 | FRICTION CLUTCH DISCONNECT FOR WATER PUMP - The invention uses a frictional clutch to disengage the vehicle water pump. Actuating methods for the clutch include electromagnetic, vacuum piston and an external solenoid. The clutch is engaged with a diaphragm spring. | 08-19-2010 |
20100252390 | SEALED PTO DAMPER - A torsion damper including a plurality of elastic elements, a first plate drivingly engaged with the plurality of elastic elements and adapted to drivingly engage with a transmission shaft, a gear, and a second plate drivingly engaged with the gear and the plurality of elastic elements. At least one of the first or second plate is adapted to hydraulically seal with respect to a housing for the transmission. The gear may be adapted to be a power take-off gear for the transmission. | 10-07-2010 |
20110108140 | LATCHING CHECK VALVE - A hydraulic valve including an inlet port for receiving a pressurized hydraulic fluid and an outlet port for expelling the hydraulic fluid. The valve also includes a displaceable spool for blocking and unblocking a flow path between the inlet and outlet ports, and a latching mechanism for displacing the spool in response to a pressure surge for the hydraulic fluid. The valve includes a first elastic element and a second elastic element, where the first elastic element urges the spool into a position blocking the flow path and the second elastic element urges the latching mechanism to displace the spool into a position out of the flow path. In an unlatched position of the latching mechanism, force from the second elastic element is transferred to the spool, and in a latched position of the latching mechanism, the spool is isolated from the second elastic element. | 05-12-2011 |
20110147157 | RING SHAPED AXIAL WEAR COMPENSATION DEVICE - A wear compensating device, including: at a first axial end, an annularly-shaped base element; an index trigger element connected to the base element; a first annularly-shaped element, at least partially rotatable with respect to the base element, engaged with the index trigger element, and at least partially rotatable with respect to the index trigger element; and at a second axial end, opposite the first axial end, a second annularly-shaped element with a first ramp, the second annularly-shaped element engaged with the first annularly-shaped element and rotatable with respect to the first annularly-shaped element. In response to a specified amount of displacement by a portion of the index trigger element, the first and second annularly-shaped elements are rotatable to change a circumferential position of the first ramp. | 06-23-2011 |
20110150670 | TRANSMISSION PUMP WITH ONE-WAY CLUTCH FUNCTION AND METHOD OF ASSEMBLING PUMP HUB FOR A TORQUE CONVERTER TO A TRANSMISSION PUMP - A pump for a transmission, including: a housing with a pneumatic port; and a gear for engaging with a pump hub for a torque converter, wherein the pneumatic port is for introducing compressed air into the housing to restrict rotation of the gear. In an example embodiment, restricting rotation of the gear is to prevent rotation of the gear when the gear is interfaced with the pump hub to rotationally lock the gear with the pump hub. A pump for a transmission, including: a housing; a gear for engaging with a pump hub for a torque converter; and, an element for enabling rotation of the gear in a first rotational direction and locking the gear with respect to rotation in a second rotational direction, opposite the first rotational direction. In an example embodiment the element includes a one-way clutch. | 06-23-2011 |
20110154813 | TORQUE CONVERTER PUMP HUB WITH PROFILED ASSEMBLY SURFACE - A torque converter including a cover, a turbine pump in fluid contact with the turbine, and a pump shell connected to the cover. The torque converter includes a pump hub connected to the pump shell such that the pump shell and the pump hub are fixed with respect to rotation. The pump hub also includes a portion with a distal end having a plurality of indentations and a plurality of sloped surfaces in contact with the plurality of indentations. The plurality of sloped surfaces is arranged to receive a plurality of protrusions for a transmission pump gear and to urge the pump hub or the pump gear into rotational motion to urge the plurality of protrusions into mating engagement with the plurality of indentations. | 06-30-2011 |
20110214958 | FLUID COUPLING LAUNCH DEVICE - A launch device for a vehicle transmission including a housing, an impeller, a turbine, and first and second clutches with first and second pistons, respectively. The first and second pistons are sealingly engaged with one another. The first clutch releaseably engages the impeller with the housing and the second clutch releaseably engages the turbine with the housing. In an example embodiment, the first clutch is disposed radially outside of the second clutch. In an example embodiment, the first clutch is engaged by a first pressure, and the second clutch is engaged by a second pressure greater than the first pressure. | 09-08-2011 |
20110290612 | CLIP SEAL WITH INTEGRATED RETURN SPRING - A piston subassembly for operating a clutch of a transmission including a piston, a compensation dam, wherein the piston is axially moveable with respect to the compensation dam, and a clip operatively affixed to the piston, the clip operatively arranged between the piston and the compensation dam, the clip including at least one spring element for exerting a force between the dam and the piston to pull the piston axially away from the compensation dam, wherein the compensation dam is included on a transmission shaft, the compensation dam including a radially inner flange having a slot, wherein the slot is operatively arranged to engage with a radial protrusion on the transmission shaft for forming a twist-lock between the compensation dam and the shaft. | 12-01-2011 |
20120137669 | TORQUE CONVERTER DRIVE CONNECTION - A drive connection for fixing a torque converter to an engine crankshaft includes a crankshaft, a torque converter, and a threaded fastener. The crankshaft includes an end face, a rotational axis, and a threaded hole aligned with the axis. The torque converter includes a rotational axis and a cover having an aperture aligned with the axis. The threaded fastener extends through the aperture and is engaged with the threaded hole to secure the cover to the end face. In an example embodiment, the drive connection includes a sealing element disposed between the fastener and the cover. The sealing element may be a washer or an o-ring. | 06-07-2012 |
20120161400 | BI-DIRECTIONAL CLIP SEAL PISTON - A piston assembly, comprising: a back plate with an axially extending extrusion continuously circumferentially disposed about the back plate; a piston including an indent circumferentially disposed proximate an outer circumference for the piston plate; and a sealing element at least partially disposed in the indent. The piston is fixed to the back plate with a plurality of extruded rivets such that the extrusion forms a liquid-tight seal against a surface of the piston. The indent is open in an axial direction facing the back plate. The extrusion is radially inward of the plurality of extruded rivets. | 06-28-2012 |
20120186443 | PISTON ASSEMBLY WITH A STAMPED ORIFICE - A piston assembly, including: a back plate and a piston fixed to the back plate and including: an indent circumferentially disposed proximate an outer circumference for the piston plate and including a radially disposed surface; and a groove in the indent. The assembly includes a sealing element at least partially disposed in the indent; and at least one resilient element in contact with the piston and applying a first pressure to urge the sealing element in a first axial direction to create a gap between the piston and the sealing element. When the gap is present, the groove provides a flow path from a chamber at least partially formed by the back plate to the gap. When the sealing element is sealed against the radially disposed surface the flow path is blocked. | 07-26-2012 |
20130098729 | VEHICLE STARTING DEVICE - A starting device for a vehicle includes a spring support ring and a coiled clutch. The coiled clutch has a first end frictionally engaged with the spring support ring, a center portion connected to the first end and arranged for compressive engagement with an outer shell of a torque converter, and a second end connected to the center portion and arranged for rotational displacement in a first direction relative to the first end to compressively engage the center portion with the outer shell. In some example embodiments, the spring support ring encircles the coiled clutch. In some example embodiments, the spring support ring includes a circumferential groove for receiving the first end. In an example embodiment, a free diameter of the first end is greater than a free diameter of the center portion. | 04-25-2013 |
20140137815 | MODULE FOR CONTROLLING COOLANT VALVE AND GRILLE SHUTTER - A thermal management module includes a motor with an output shaft, and a gear train connecting the output shaft to a driven gear connected to a valve for controlling coolant flow in a coolant system. At least one grille shutter is movable between an open position allowing air through the grille shutter and a dosed position preventing air through the grille shutter. A linkage connects the at least one grille shutter to the output shaft or the gear train, so that the motor is operable to control a valve operating position of the valve and a shutter operating position of the at least one shutter. | 05-22-2014 |
20140174878 | GAP-FILLING CLUTCH WITH RAMPS - A transmission clutch including: a carrier; a clutch pack; friction plates; a compression plate including a portion; and a first ramp ring including: a first portion in contact with the portion of the compression plate; and a second portion. The clutch includes a second ramp ring including a third portion axially aligned with the second portion; a lever spring; and a piston. The piston displaces the spring in an axial direction such that: the spring applies a force to the second portion; the first ramp ring rotates in a circumferential direction and axially displaces in the axial direction; and the first ramp ring urges the compression plate in the axial direction to contact the clutch pack. The piston displaces the lever spring further in the axial direction such that the compression plate clamps pressure plates and friction plates in the clutch pack to rotationally fix the carrier to the housing. | 06-26-2014 |
20140231208 | LOCKING DISCONNECT CLUTCH - A disconnect clutch includes a hub, a carrier, a wedge plate, a friction plate, a pressure plate, and a pin. The hub has a radially outer surface with a ramp and the carrier has a radially inner surface. The wedge plate is disposed radially between the hub and the carrier. It has a radially inner surface with a ramp, proximate and complementary to the hub outer surface, a radially outer surface proximate the carrier inner surface, and a split extending from the radially inner surface to the radially outer surface. The friction plate is drivingly connected to the carrier. The pressure plate is arranged for frictionally engaging the wedge plate with the at least one friction plate. The pin is rotationally fixed and radially or axially displaceable with respect to the hub, and arranged for limiting rotation of the at least one wedge plate relative to the hub. | 08-21-2014 |