Abstract: A fluid clutch device having a fluid clutch in a body and a cover. A fan member is attached to the device. The body and fan member are both centered on the cover.

Abstract: A clutch unit having a pressure plate via which, as a result of axial displacement, a clutch disc which bears friction linings can be pressed against a pressure plate to form a frictionally engaging connection, wherein the axial displacement of the pressure plate can be effected by means of an axial displacement of a lever spring plate which has a circular outer circumference and which bears against one or more protuberances arranged annularly on a surface, which faces toward the lever spring plate of the pressure plate so as to be spaced apart radially from the outer edge thereof, and wherein the pressure plate has, radially at the outside on that side thereof which faces towards the lever spring plate, an annular, axially projecting edge. At least three radial projections which are spaced apart in the circumferential direction are arranged on the radially inner wall of the axially projecting edge.

Abstract: A fan drive (1) includes a drive shaft (6), a fluid friction clutch (2) as well as a fan (3). The fluid friction clutch (2) includes a drive disc (5) as well as a housing (4) having a front-end housing part (4a) and a rear-end housing part (4b). The housing (4) is journalled on a drive shaft (6) via at least one bearing (7). Air flows against the fluid friction clutch (2) and the fan (3) in flow direction (L). An air-conveying unit (13) is mounted in flow direction (L) behind the fluid friction clutch (2). The fan drive is especially for a motor vehicle.

Abstract: A viscous fan drive with a front-mounted fan and electrical actuation without a tethered harness. The mechanical package includes an inverted viscous clutch, a drive pulley, a split electromagnetic actuator with the electrical portion mounted to a stationary mounting member. Enhanced cooling can be provided with breather openings in the pulley, breather slots in the body member, and fins in the reservoir.

Abstract: The present invention relates to a fluid clutch device having a clutch body (2), having a cover (30 which is fastened to the clutch body (2) and having a fan impeller (5) by means of which both the clutch body (2) and also the fan impeller (4) are centered on the cover (3)

Abstract: A magnetorheological fan coupling (10) having a fan-drive subassembly (12), an electromagnet subassembly (14), and a magnetic medium (16). The fan-drive subassembly (12) includes an output member (22) and an input member (20) rotatably mounted around the output member (22) with the magnetic medium (16) therebetween. The magnetic medium (16) has a shear stress that can be adjusted by a magnetic flux (24) for transferring torque between the input member (20) and the output member (22). The electromagnet subassembly (14) includes a stationary electromagnet coil (62) for adjusting the shear stress of the magnetic medium (16) and regulating a torque transferred between the input member (20) and the output member (22).

Abstract: A magnetorheological fan coupling (10) having an inverted construction with an input member (18) rotatably mounted to an output member (20). The input member (18) defines a fluid chamber (50) with the output member (20) rotating therein and a magnetic medium (52) between the output member (20) and the input member (18). The coupling (10) further includes an electromagnet subassembly (14) actuated by a controller (82) for adjusting the shear stress of the magnetic medium (52) and regulating the amount of torque transferred from the input member (18) to the output member (20).

Abstract: A dual clutch comprises two clutch areas, each with a pressure plate which can be moved by a force-exerting arrangement toward an abutment arrangement, where the abutment arrangement is to be connected by a connecting plate arrangement to a drive element, also comprising a starter gear ring connected to the abutment arrangement for rotation in common, where the starter gear ring has a first connecting area for connection to the abutment arrangement and a second connecting area for connection to the connecting plate arrangement

Abstract: A housing arrangement for a friction clutch, especially for a multi-disk clutch, where the housing arrangement is designed approximately in the shape of a cup and is provided with a bottom area and an edge area for connection to a flywheel. At least one air through-opening is provided in the bottom area, each opening being bounded by a front edge and a rear edge with respect to the direction of rotation, the front edge being axially offset toward the interior of the housing with respect to said rear edge.

Abstract: A housing arrangement for a friction clutch, especially for a multi-disk clutch, where the housing arrangement is designed approximately in the shape of a cup and is provided with a bottom area and an edge area for connection to a flywheel. At least one air through-opening is provided in the bottom area, each opening being bounded by a front edge and a rear edge with respect to the direction of rotation, the front edge being axially offset toward the interior of the housing with respect to said rear edge.

Abstract: A fan drive assembly including a cooling fan (11) and a fluid coupling device (13). The cooling fan includes a fan hub (17), a spider (15), and a plurality of fan blades (19). The coupling device has an output coupling assembly (21) including a body (23) and a cover (25). The body (23) includes preferably only three mounting portions (67), each being disposed immediately adjacent an outer periphery of the body. Each of the mounting portions (67) defines the necessary machining chucking surfaces (73), and a spider mounting surface (75) including a pilot surface (77) engaging the pilot diameter (79) of the spider (15). The body (23) includes cooling fins (61) covering substantially all of the rearward surface (59) of the body not covered by the mounting portions. The fan hub (17) also includes a rearwardly extending air dam portion (81), limiting localized radial air flow.

Abstract: A press drive has an oil shear clutch and an oil shear brake located within a chamber defined by a housing. The chamber is filled with lubricating oil. A fluid passage is formed from the chamber through an output member and then to the friction discs of the clutch and brake. The bore through the output member includes a dam which retains a specified amount of lubricating oil within the bore. A fan cover is attached to the housing and it includes a pair of wing extensions that extend outwardly of the housing. The wing extensions direct air flow from a fan within the fan cover over the outer surface of the housing.

Abstract: A fan drive assembly including a cooling fan (11) and a fluid coupling device (13). The cooling fan includes a fan hub (17), a spider (15), and a plurality of fan blades (19). The coupling device has an output coupling assembly (21) including a body (23) and a cover (25). The body (23) includes preferably only three mounting portions (67), each being disposed immediately adjacent an outer periphery of the body. Each of the mounting portions (67) defines the necessary machining chucking surfaces (73), and a spider mounting surface (75) including a pilot surface (77) engaging the pilot diameter (79) of the spider (15). The body (23) includes cooling fins (61) covering substantially all of the rearward surface (59) of the body not covered by the mounting portions. The fan hub (17) also includes a rearwardly extending air dam portion (81), limiting localized radial air flow.

Abstract: A fan drive assembly including a cooling fan (11) and a fluid coupling device (13). The cooling fan includes a fan hub (17), a spider (15), and a plurality of fan blades (19). The coupling device has an output coupling assembly (21) including a body (23) and a cover (25). The body (23) includes preferably only three mounting portions (67), each being disposed immediately adjacent an outer periphery of the body. Each of the mounting portions (67) defines the necessary machining chucking surfaces (73), and a spider mounting surface (75) including a pilot surface (77) engaging the pilot diameter (79) of the spider (15). The body (23) includes cooling fins (61) covering substantially all of the rearward surface (59) of the body not covered by the mounting portions. The fan hub (17) also includes a rearwardly extending air dam portion (81), limiting localized radial air flow.