Abstract: Electrically driven vehicle including a drivetrain with an electric motor which forms the drive of the vehicle, and a frictionally engaging clutch. The clutch is a normally closed clutch with conical friction elements, which rest against each other in pairs in a closed position and transmit torque.

Abstract: A hydraulic pump with an integrated clutch includes an outer cone coupled to a drive gear or a driven gear and having a frictional inner surface, and an inner cone arranged inside the outer cone, coupled to the drive gear or the driven gear and having a frictional outer surface, wherein the inner and outer cones are rotationally and axially movable with respect to each other. A spring is coupled to the inner cone or the outer cone and acts to axially displace the inner cone with respect to the outer cone in a first direction. An actuator including a rod and a piston is coupled to the inner cone or the outer cone and acts to overcome the force of the spring to axially displace the inner cone with respect to the outer cone in a second direction being axially opposite to the first direction.

Abstract: The invention proposes a friction coupling, in particular for use in motor vehicles, e.g. for controlling an air compressor, in which coupling at least two friction surfaces can be brought into frictional connection. According to the invention, two conical friction surface pairs are provided.

Abstract: Some embodiments of a fan clutch system may drive an output member to rotate at a first speed when opposing friction clutch surfaces are engaged and to rotate at a second, slower speed when the friction clutch surfaces are shifted to a disengaged position. In particular embodiments, the multi-speed clutch system may employ an eddy current drive system that is arranged axially rearward of the friction clutch surfaces while the fan blade device is mounted in a position that is axially forward of the of the friction clutch surfaces.

Abstract: The invention relates to a shiftable friction clutch (1a, 1b) for actuation with a pressure medium. Clutches of this type can be used, for example, to drive auxiliary assemblies such as fans (22) in vehicle construction. An especially compact construction is achieved through the use of a disk spring (6). A production method is furthermore proposed.

Abstract: Pneumatic fan drive assembly with improved capacity, longevity and heat control. The output member is positioned radially internally of the output member. The friction mechanism has longer movement (moment) arms and torque. The friction engagement has an increased friction surface arm. A portion of the heat generated by the friction mechanism is evacuated to the atmosphere rather than being completely internalized in the assembly. The friction material for the friction lining alternatively can be formed of a plasma spray.

Abstract: A clutch system may include in certain embodiments a clutch body attached to a drive member such as a drive pulley, wherein the clutch body may be removed from the drive member without disassembling the clutch body. In various embodiments, the clutch body may include two clutch plates which enclose a spring-loaded pneumatic reciprocating assembly that in operation causes the plates to selectively separate and engage one another. In certain embodiments, the clutch body may be readily attached to a associated drive pulley in a single step by installation of a single set of fasteners.

Abstract: Some embodiments of a clutch system or method include a fan clutch device having a clutch shut-off system permits a cooling fan to continue to provide airflow even when the friction ring is worn down to a level that requires replacement.

Abstract: Some embodiments of a clutch system may an output member and an input member can be biased to engage one another along opposing clutch surfaces. When input member drives rotation of the output member and a fan blade device secured thereto, the resulting fan thrust provides supplemental engagement to the opposing clutch surfaces.

Abstract: Some embodiments of a clutch system may drive an output member to rotate at a first speed when the opposing clutch surfaces are engaged and to rotate at a second speed when the clutch surfaces are shifted to a disengaged position. In particular embodiments, the multi-speed clutch system may employ an eddy current drive system that causes the output portion to rotate even when the opposing clutch surfaces are disengaged.

Abstract: The invention relates to a shiftable friction clutch (1a, 1b) for actuation with a pressure medium. Clutches of this type can be used, for example, to drive auxiliary assemblies such as fans (22) in vehicle construction. An especially compact construction is achieved through the use of a disk spring (6). A production method is furthermore proposed.

Abstract: A clutch assembly having an overall diameter and overall axial length. Both the axial length and the ratio of the length to the diameter are reduced. A translatable clutch piston is in communication with a pressure chamber and is movable between a piston neutral position and a piston activated position in response to air pressure. A cone clutch member is moved from a clutch engaged position to a clutch disengaged position in response to the translatable clutch piston moving from the piston neutral position to the piston activated position. The cone clutch member engages the rotating drive shaft when in the clutch engaged position. A clutch spring member biases the cone clutch member into the clutch engaged position with a clutch engagement force. The clutch spring has a primary spring ratio of a wire diameter to a spring diameter optimized such that a maximum spring force is achieved while minimizing the spring length.

Abstract: A hydromechanical transmission having a self actuating clutch assembly. The self-actuating clutch assembly comprises a first and second gear clutching elements and a shaft clutching element that engages a shaft. The shaft clutching element is a cone clutch that is actuated by a ball element that is biased towards the shaft clutching element by a spring element that is disposed through the shaft.

Abstract: A clutch system may include in certain embodiments a clutch body attached to a drive member such as a drive pulley, wherein the clutch body may be removed from the drive member without disassembling the clutch body. In various embodiments, the clutch body may include two clutch plates which enclose a spring-loaded pneumatic reciprocating assembly that in operation causes the plates to selectively separate and engage one another. In certain embodiments, the clutch body may be readily attached to a associated drive pulley in a single step by installation of a single set of fasteners.

Abstract: A clutch system may include in certain embodiments a clutch body attached to a drive member such as a drive pulley, wherein the clutch body may be removed from the drive member without disassembling the clutch body. In various embodiments, the clutch body may include two clutch plates which enclose a spring-loaded pneumatic reciprocating assembly that in operation causes the plates to selectively separate and engage one another. In certain embodiments, the clutch body may be readily attached to a associated drive pulley in a single step by installation of a single set of fasteners.

Abstract: A drive through crankshaft assembly which selectively provides rotational power to a vehicle accessory while continuously providing rotational power to a second vehicle accessory. Rotational power is selectively provided using a cone clutch assembly that is modular. The cone clutch assembly provides power to the first vehicle accessory when it is in an engaged state. The first vehicle accessory is turned off by putting the cone clutch assembly into a disengaged state using a clutch control system.

Abstract: A hydromechanical transmission having a self actuating clutch assembly. The self-actuating clutch assembly comprises a first and second gear clutching elements and a shaft clutching element that engages a shaft. The shaft clutching element is a cone clutch that is actuated by a ball element that is biased towards the shaft clutching element by a spring element that is disposed through the shaft.

Abstract: A friction clutch assembly for use in an on/off fan drive is provided having a simplified method for retention of the friction liner between the clutch housing and rotating drive shaft. The friction clutch assembly introduces a groove within the inner rearward portion of the clutch housing. A spiral snap ring is installed into the groove to retain the friction liner between the clutch housing and rotating drive shaft. The spiral snap ring functions to axially retain the friction liner between the clutch housing and rotating drive shaft during use.

Abstract: Motor vehicle starter comprising a starter head provided with a pinion (1), a driver (2) and a coupling device with a conical clutch for coupling the pinion to the driver (2), in which the conical clutch comprises a first frustoconical friction surface (8) fixed to the pinion and a second frustoconical friction surface (8?) with a shape complementary to the first surface (8) and fixed to the driver and in which the coupling device comprises on the one hand a hollow-shaped coupling piece having. a bottom extended by an annular skirt directed axially towards one of the elements consisting of pinion and driver and on the other hand axially acting elastic means (10) bearing on a first stop fixed to the coupling piece for acting on a second stop fixed to one of the elements consisting of pinion and driver. The elastic means comprise axially deformable tongues (10b) and extend circumferentially.

Abstract: A cone type friction clutch has a pair of members displaceable relative to one another between an engaging position, wherein a torque is translated from a drive shaft to a crankshaft powering an air compressor, and disengaging position, wherein the drive and crank shafts are decoupled.

Abstract: A drive mechanism is provided for a rotating body. The body includes a rotatable shaft, and the drive mechanism includes a clutch to selectively transmit torque input to the shaft, a brake to slow down rotation of the shaft upon disengagement of the clutch, and an actuator means to engage and disengage the clutch and brake. The clutch and brake are each mounted on a mounting member which is movable with respect to the shaft in the axial direction thereof. The actuator means includes an actuator member that is slidably mounted on the mounting member and an actuator to move the actuator member from a first position, in which the clutch is engaged and the brake is disengaged, and a second position, in which the clutch is disengaged and the brake is engaged.

Abstract: In a starter for a motor vehicle internal combustion engine the pinion is rotationally coupled to the drive bush by a device enabling rotation of the drive bush relative to the pinion when the rotation speed of the pinion is greater than that of the drive bush. The device has complementary front and rear friction surfaces respectively carried by the pinion and the drive bush. The pinion is mounted to be mobile axially relative to the drive bush to which it is coupled. The two friction surfaces are pressed elastically into contact with each with a predetermined force.