A hydraulic power take-off, PTO, is provided for use with industrial drives. The hydraulic power take-off has a multi-position adapter that allows the PTO to be attached to a prime mover in a multitude of angularly indexed positions while maintaining a gravity-assisted drain and sump for the hydraulic fluid. The multi-position adapter is indexable to selectively block and allow for passage of oil from a tower housing to a clutch housing thus ensuring the hydraulic oil properly drains. As a result, the tower housing is also indexable which allows the PTO unit to be installed in a number of different configurations to meet the demands of the prime mover and the final application of the industrial machine.

A clutch cover for a roller blind clutch. The clutch cover comprises a clutch barrel portion mounted upon and extending outwardly from a first side of a backing plate, a cover ring and one or more indexing locators to fix the position of the cover ring relative to the backing plate when the cover ring is releasably secured about the backing plate. The cover ring includes a chain guide and is releasably securable about the backing plate such that the cover ring encompasses the backing plate. The indexing locators prevent relative rotational movement between the cover ring and the backing plate when the cover ring is releasably secured about the backing plate. The indexing locators permit the chain guide to be positioned at a plurality of angles relative to the backing plate.

A transmission system (10), especially for a motor vehicle, having around an axis (O) at least an input shell (12) that is rotationally connected to a driving shaft and to a drive web (18) in order to rotationally connect said input shell (12) to a double wet clutch mechanism (20) that, having at least a first clutch (E1) and a second clutch (E2) respectively of the multiple-disc type, is controlled to selectively couple said driving shaft to a first driven shaft (A1) and to a second driven shaft (A2), wherein the input shell (12) and the drive web (18) are rotationally connected by connecting means (24), which are constituted in particular by rivets (25), with zero angular clearance.

A dry friction clutch for connecting a transmission with a flywheel of an engine is provided. The clutch includes a bracket having a main body axially spaced from an engine flywheel. The bracket is torsionally connected to the flywheel. The bracket has a generally U-shaped cross section with a main body connected with generally axially extending side walls. An axially movable pressure plate is torsionally connected with the bracket. The pressure plate is axially movable within the bracket. A friction disc is provided having a connection with an input shaft of a transmission. The friction disc is axially positioned between the flywheel and the pressure plate. A release assembly is provided including a spring for urging the pressure plate toward the flywheel. The bracket side walls have inward positioned barbs to axially limit travel of the pressure plate.

A clutch ring gear assembly and method of construction thereof are provided. The assembly has a bearing seat including a flange extending radially outwardly from a central axis. The flange has a plurality of holes spaced circumferentially from one another about the central axis. A ring gear carrier includes a rim extending radially outwardly from the central axis. The rim has a plurality of through openings. Each of the through openings of the rim has an annular boss extending axially away from the rim in generally parallel relation to the central axis. The annular bosses are disposed within the holes and have hollow, annular end portions flared radially outwardly into engagement with the flange of said bearing seat to fixedly attach the ring gear carrier to the bearing seat.

A housing of a solenoid valve unit for controlling a central clutch actuator of a utility vehicle is configured for installation in a transmission housing, preferably in a clutch case, and for accommodating at least one solenoid valve. The housing has an elongate housing shape that is curved along its longitudinal direction to enable installation in tight spaces.

A front wheel clutch and a front wheel acceleration clutch are supported to a front wheel transmission shaft. Between the front wheel clutch and the front wheel acceleration clutch, there is provided a holder supporting the front wheel transmission shaft. A first operational oil passage for switching over the front wheel clutch is defined respectively in and between the holder and the front wheel transmission shaft. A second operational oil passage for switching over the front wheel acceleration clutch is defined respectively in and between the holder and the front wheel transmission shaft.

A clutch cover for a friction clutch and a friction clutch, where the clutch cover forms a ring wall and the ring wall forms a plurality of circumferentially spaced radially extending plates having each a radially outer end. The ring wall also form two or more concentric annular stiffening bands extending at a radial distance from one another and including an innermost annular stiffening band. The ring wall also forms an outermost annular stiffening band, wherein the annular stiffening bands connect the radial plates to each other and having each a radial thickness that is smaller than the radial distance therebetween measured in intermediate regions of the ring wall between respectively two successive radial plates. A plurality of circumferentially spaced drive members of the friction clutch protrude axially from or can be screw connected to said radially outer ends of the radial plates.

A harvester power takeoff (PTO) clutch system includes a detachable PTO extension module and transmission gearbox housing, which has a clutch compartment and a clutch service port through which the clutch compartment can be accessed. A PTO clutch is disposed in the clutch compartment, while a clutch shaft extends from the PTO clutch and projects from the clutch compartment through the clutch service port. The detachable PTO extension module includes, in turn: a PTO housing extension mounted to the transmission gearbox housing; a PTO shaft rotatably coupled to the PTO clutch and projecting from the PTO housing extension in a direction opposite the transmission gearbox housing; an inner extension bearing disposed in the PTO housing extension and rotatably supporting the clutch shaft; and an outer extension bearing further disposed in the PTO housing extension and rotatably supporting the PTO shaft.

A power take-off includes bell housing disposed about an axis and configured for coupling to a housing of an engine or other driving device at a first axial end and to a housing of a driven device at a second axial end. The bell housing defines an air inlet port and an air outlet port between the first and second axial ends. A clutch is disposed within the bell housing and configured to transfer torque from an input member coupled to the engine to an output member coupled to the driven device. A fan is configured for rotation with the input member to draw air into the bell housing through the air inlet port, move air through the bell housing from the air inlet port to the air outlet port in a substantially radial direction across the clutch and exhaust air from the bell housing through the air outlet port.