Abstract: A positive clutch actuating device of a motor vehicle transmission for shifting a positive clutch that is situated in series with a friction clutch includes at least one actuating unit having at least one gate track, which is provided for mechanically converting a rotary movement into a linear movement in order to actuate the positive clutch.

Abstract: A gear case assembly for a marine propulsion system has a gear case having a first end adapted to connect the gear case to a remainder of the marine propulsion system, and a second end disposed opposite the first end. A driveshaft is disposed at least in part in the gear case. A propeller shaft, operatively connected to an end of the driveshaft, is disposed at an angle thereto. The end of the driveshaft and at least a portion of the propeller shaft are disposed in a transmission chamber defined in the gear case. An expansion port is defined in the gear case. A container, defining an expansion chamber, is disposed outside the gear case. The expansion port fluidly communicates the transmission chamber with the expansion chamber. An outboard engine is also disclosed.

Abstract: A clutch assembly, including: a secondary piston assembly; a primary piston including a portion located radially outward of the secondary piston assembly; a first chamber at least partially formed by a first side of the primary piston; a second chamber at least partially formed by the secondary piston assembly and a second side of the primary piston; and a check valve connecting the first and second chambers. For a first force applied by fluid in the first chamber: the primary piston remains axially stationary; the fluid flows from the first chamber into the second chamber; and the secondary piston assembly displaces in a first axial direction to contact a clutch pack. For an increase of the first force to a second force: fluid flow between the first and second chambers is blocked by the check valve; and the primary piston and the secondary piston assembly displace in the first axial direction to close the clutch pack.

Abstract: A power transmission device has a rigid body that includes a contact portion coming into contact with the first or second friction member and that moves the contact portion from a position of contact with the first or second friction member to a position of no contact with the first and second friction members, an elastic body that applies to the rigid body a force moving the contact portion to a position of contact with the first or second friction member, a first pushing mechanism that applies to the rigid body a pressure of liquid moving the contact portion to a position of contact with the first or second friction member, and a second pushing mechanism that applies to the rigid body a pressure of liquid moving the contact portion to a position of no contact with the first and second friction members.

Abstract: A device for controlling a rotating shifting element of an automatic transmission for a start/stop operation. The shifting element is actuated by an axially moving piston which is biased, in a disengaging direction, by a spring and biased, in an engaging direction, by hydraulic pressure supplied to a pressure space. At least one spring-loaded latch, which is able to move in the radial direction, is arranged in the pressure space. The spring-loaded latch, when the combustion engine is operating, rotates with the piston and acts upon the piston such that if the engine stops, the previously engaged shifting element is locked by spring force and, as the pressure decreases, the shifting element disengages, at most only slightly, and when the engine is re-started, the locking action is again released by centrifugal force, in opposition to the spring force, so that the piston remains engaged during the hydraulic pressure build-up in the pressure chamber.

Abstract: A clutch and damper assembly for a torque converter includes a clutch piston with a piston friction surface for engaging the clutch and an outer sealing diameter, and a damper. The piston friction surface is disposed radially inward of the damper and the outer sealing diameter is disposed radially outward of the damper. In an example embodiment, the clutch piston includes an inner sealing diameter disposed radially inward of the piston friction surface. In some example embodiments, the damper includes a resilient element and a drive plate. The drive plate is drivingly engaged with the resilient element and frictionally engageable with the clutch piston.

Abstract: In a first hydraulic clutch device 36 provided with a first clutch inner 84, a pressure bearing plate portion 84D disposed on the first clutch inner 84 opposing driving and driven friction plates 85 and 86, a clutch piston 91 that is consecutively disposed to a pressurizing plate portion 91D and moves to the side to pressurize the driving and driven friction plates 85 and 86 in accordance with an increase in a hydraulic pressure in a control hydraulic chamber 96, a piston guide 92 that forms a control hydraulic chamber 96 between itself and the clutch piston 91, and a canceller plate 93 that forms a hydraulic canceller chamber 97 on the side opposite to the control hydraulic pressure chamber 96, a projection portion 133 of the canceller plate 93 and a notch portion 122 disposed in the piston guide 92 and engaged with the projection portion 133 are engaged with each other and assembled, and a clip 135 that is engaged with an engagement groove 123 of the notch portion 122 and regulates axial movement of the can

Abstract: A hydraulic clutch for preventing a drag of a clutch at the time of disengaging the clutch by decreasing an oil supply quantity between a plurality of clutch plates and a plurality of clutch discs thus decreasing a change hitting sound at the time of shifting. A hydraulic clutch is configured such that the superposition between an oil supply hole formed in a clutch pressure plate and an oil supply hole formed in a clutch center becomes maximum when the clutch is engaged.

Abstract: A clutch arrangement includes a housing filled with fluid, a first friction surface formation rotatable with the housing around an axis of rotation, a second friction surface formation rotatable with a driven element around the axis of rotation, a pressing element rotatable with the housing around the axis of rotation and which divides an interior space of the housing into a first spatial area and a second spatial area. Depending on fluid pressure in the first and fluid pressure in the second spatial areas, the pressing element is movable with respect to the housing for producing and canceling a frictional engagement between the and the second friction surface formations. A fluid supply system for the first spatial area and/or the second spatial area includes at least a first fluid flow path. The fluid can be supplied to the associated spatial area via at least one fluid flow path and fluid can be removed from the associated spatial area via at least one fluid flow path.

Abstract: A transmission may include gears and a clutch to allow the transfer of torque, at a variety of gear ratios, between an input shaft and an output shaft. The clutch may include a cushion piston to decrease the velocity of a transmission piston before the transmission piston engages a clutch element. The cushion piston may be contained within the transmission piston and configured so the cushion piston ceases movement toward the clutch element before the transmission piston. The pistons may be coupled together such that the cushion piston may resist movement of transmission piston toward the clutch element.

Abstract: A hybrid driving force transmission device is provided with a multiple-plate dry clutch, a piston, a piston arm, a return spring, bellows elastic seal components and an arm fixing plate. The return spring applies biasing force to the piston arm in the release direction of the clutch, during the release period of the multiple-plate dry clutch. The bellows elastic seal member is secured or maintained in a position on the side wall of a clutch drum and seals a through hole and arm distal end from the clutch chamber, and undergoes an elastic deformation following the stroke movement of the arm distal end. The arm fixing plate is integrally provided with the bellows elastic seal member, is fixed to the arm distal end, and when the multiple-plate dry clutch is engaged, is configured to contact the clutch plate for transferring the clutch engagement force.

Abstract: A torque transmitting device for transmitting torque between a first and second members includes an annular piston that defines an axis and an apply plate translatable along the axis between an unengaged position and an engaged position. The apply plate has a first end disposed radially inward of a second end and is in contact with the piston. An apply disc is rotationally coupled to the first member and is translatable between unengaged and engaged positions. The apply disc is disposed radially outward of the piston. A backing disc is rotationally and axially fixed to the first member and disposed radially outward of the piston. A friction plate is disposed between the apply disc and the backing disc. The friction plate has a first end disposed radially inward of a second end and is rotationally coupled to the second member. The friction plate is disposed radially outward of the piston.

Abstract: A combined power transmission and drive unit for the application in drive trains in hybrid systems with at least two prime movers that can be coupled via a power transmission unit with a consumer, in particular transmission. Between a first prime mover and the power transmission unit, a device is provided for connecting/disconnecting the power flow between the latter and the power transmission unit, including a friction clutch that can be actuated by a pressure medium, including a first clutch part and a second clutch part which can be brought in active connection with one another via a servo unit featuring a piston element that can be pressurized by a pressure medium. A combined power transmission and drive unit according to the invention, with control of a rotation speed difference of a flow medium on either face side of a piston element.

Abstract: An arrangement of a disk spring (2) at a piston (1) of a shifting element (3) in which the fingers of the disk spring (2) protrude through crests in the housing (4) and abut against a sheet metal sleeve (5) which is held in the housing (4) of the shifting element (3). The disk spring (2) is configured as a closed ring and the outer diameter (7) of the disk spring (2) abuts against the piston (1) of the shifting element (3).

Abstract: A clutch assembly for a vehicle transmission includes a housing defined by a wall having an annular configuration circumscribing a clutch axis. The wall extends between an open end and a floor. The floor extends inwardly from the wall toward the clutch axis. A plurality of splines formed in the wall and each is spaced from the open end of the housing. A snap ring retains clutch plates in the housing. The open end of the wall is deformed inwardly toward the clutch axis defining a retainer for retaining the snap ring within the housing.

Abstract: A two way actuator in a torque transmitting assembly includes a piston member having a first side with a first contact surface and a second side opposite with a second contact surface. A backing member is sealed to the piston member. A first biasing member is disposed between the backing member and the piston member and a second biasing member is disposed between the piston member and a second member. The first torque transmitting device is engaged when a hydraulic fluid contacts the second side of the piston member and moves the piston member to contact the first torque transmitting device. The second torque transmitting device is engaged when the hydraulic fluid contacts the first side of the piston member and moves the piston member to contact the second torque transmitting device.

Abstract: A device for operating a shifting element of a drive mechanism, having a piston positioned in a piston space to slide between first and second end positions. The piston is operated hydraulically and depends on the hydraulic pressure in the piston space and a force of a resetting mechanism acting on the piston, which opposes the activating force that is equivalent to the hydraulic pressure in the piston space. The transmission capacity of the shifting element is reduced by a force acting on the piston in the direction of the first end position and is increased by a force acting on the piston in the direction of its second end position. The piston is held by a mechanical holder against a force acting on the piston in the direction of the first end position in at least one preset position which is different from the first end position.

Abstract: The friction engagement apparatus comprises a case forming part of a power transmission apparatus, a plurality of friction plates splined to the case, a plurality of friction plates splined to a rotation element, an annular piston having a cylindrical wall portion imparting the urging pressure to the friction plates, an urging device having a return spring intervening between the case and the piston to urge the piston in one axial direction, the cylindrical wall portion having a first pressure receiving section formed with a cut-off recession, and a second pressure receiving section formed with no cut-off recession, and the return spring being coaxially arranged with the piston and having a bending stiffness in the axial direction with respect to a circumferential unit length, the bending stiffness in the first pressure receiving section being larger than the bending stiffness in the second pressure receiving section.

Abstract: Externally deployed airbag system for a vehicle including one or more inflatable airbags deployable outside of the vehicle, an anticipatory sensor system for assessing the probable severity of an impact involving the vehicle based on data obtained prior to the impact and initiating inflation of the airbag(s) in the event an impact above a threshold severity is assessed, and an inflator coupled to the anticipatory sensor system and the airbag for inflating the airbag when initiated by the anticipatory sensor system. The airbag may be housed in a module mounted along a side of the vehicle, in a side door of the vehicle (both for side impact protection), at a front of the vehicle (for frontal impact protection) or at a rear of the vehicle (for rear impact protection). Also, the externally deployed airbag can be deployed to cushion a pedestrian's impact against the vehicle.

Abstract: A transmission configured for receiving power from an engine is provided with a normally-closed clutch in order to permit operation in modes requiring closure of the clutch even when hydraulic power from a pump powered by the engine or by rotation of a transmission member is not available, or is not of a sufficient pressure.

Abstract: A hydraulic servo for a brake in an automatic transmission has a piston secured against rotation without provision of a protrusion on the piston engaging the transmission casing. The piston of the hydraulic servo has an inner cylindrical surface configured to grasp, along their lengths, return springs compressed between the piston and a return plate to which the return springs are fixed. The return plate is bolted to a bulkhead portion of the transmission case and, thus, the piston member is fixed to the bulkhead portion and thereby prevented from rotating.

Abstract: A multiple disc clutch apparatus can comprise a plurality of driving clutch plates spline-fitted axially slidably on an input member rotated by a driving source, a plurality of driven clutch plates arranged alternately with the driving clutch plates and spline-fitted axially slidably on an output member, a clutch piston having one surface facing toward an oil pressure chamber and the other surface facing toward the driving clutch plates or driven clutch plates and adapted to be displaced toward a clutch-on side by supplying oil to the oil pressure chamber to pressure-contact the driving clutch plates and driven clutch plates each other so as to transmit a driving force of the input member to the output member and also adapted to be returned toward a clutch-off side by discharging the oil in the oil pressure chamber to separate the driving and driven clutch plates and from each other so as to cut off the transmission of driving force from the input member to the output member.