A clutch assembly or module having multiple one-way clutches, each clutch operates independently of the others to control torque transmission to and from a common or shared notch plate. The assembly or module also controls rotation, including the direction thereof, of the common or shared notch plate. Depending upon the position of each one-way clutch, multiple modes of torque transfer and common or shared notch plate rotation can be achieved.

A clutch assembly or module having multiple one-way clutches, each clutch operates independently of the others to control torque transmission to and from a common or shared notch plate. The assembly or module also controls rotation, including the direction thereof, of the common or shared notch plate. Depending upon the position of each one-way clutch, multiple modes of torque transfer and common or shared notch plate rotation can be achieved.

A power take-off shaft system for an agricultural vehicle includes an output shaft with a socket for a power take-off shaft stub located at one end of the output shaft, wherein the power take-off shaft stub is arranged in the socket. A control valve is arranged in the output shaft and includes a valve bore extending axially from the socket into the output shaft. A first piston is adjustably arranged inside the valve bore in the output shaft, and a shifting element is adjustably controlled by the first piston. A first gearwheel and a second gearwheel are disposed in engagement with the output shaft via the shifting element such that the first piston is adjustable between a first position and a second position. The control valve includes a second piston arranged on the first piston, where the first piston is adjustable into a neutral position by the second piston.

A power transmission device includes a first shaft provided to be rotatable around a first rotational axis of the hydraulic pump driven by the engine. A second shaft is rotatable about the first rotational axis to rotate the power take shaft. A clutch is rotatable about a second rotational axis that is substantially parallel to the first rotational axis and is vertically below the first rotational axis. The clutch has a first rotating portion and a second rotating portion arranged to face each other in the second rotational axis. A first rotating portion is connectable to and separable from the second rotating portion. The first rotation transmission mechanism is configured to transmit rotation of the first shaft to the first rotating portion. A second rotation transmission mechanism is configured to transmit rotation of the second rotating portion to the second shaft.

A multi-plate clutch transmission includes an arrangement for selectively engaging the clutch by moving the sleeve to cause one or more friction disks on a sleeve connected to a shaft to move into contact with one or more friction disks on a clutch basket connected to a gear driven by another gear and another shaft driven by a prime mover. An arrangement for selectively disengaging the clutch is provided that uses prime mover torque to move the one or more friction disks on the sleeve out of contact with the one or more.friction disks on the clutch basket.

A hydraulic clutch assembly includes a housing defining an internal cavity, a shaft, a clutch pack, a piston and a cylinder. The shaft extends within the internal cavity along a rotation axis for a rotatable member. The clutch pack includes interleaved plates and discs which are configured to rotationally couple the rotatable member to the shaft. The piston may be disposed within the internal cavity of the housing. The piston includes a first piston region and a second piston region. The first piston region is configured to engage the clutch pack while the second piston region is spaced radially from the first piston region. The piston may be arranged within the housing to define a first pressure chamber between the piston and the housing. The cylinder may be disposed within the internal cavity of the housing and may include a hollow interior for receiving the second piston region. The second piston region and the cylinder may define a second pressure chamber.

A vehicle transmission includes a shaft; speed-changing gears; switching mechanisms; and a shifting mechanism. The shifting mechanism is provided with a double-meshing preventing mechanism configured to switch between a one-way state in which the switching mechanisms are hindered from moving in a downshift direction and allowed to move in an upshift direction and a free state in which the switching mechanisms are allowed to move in both the downshift direction and the upshift direction.

Transmission control mechanism 100 in a power transmission system of a vehicle a transmission shift lever 102, a shifter arm 106, an input ratchet shifting assembly 108, an input shift ratchet and cam assembly 110, a drive shaft 112, a plurality of keys 113, a driven shaft 114, a coupler 115, a driven shaft drive gear 116, a driven shaft driven gear 118, a plurality of rail shifting means 120, a plurality of bushes 121, a plurality of rail shifter support members 122, a plurality of pawl assemblies 124, a plurality of pawl kicker means 126, a lever position control valve assembly 136, an active detent control valve assembly 138, a detent control valve assembly 140, a clutch selection control valve assembly 142, a gear shift lever position valve lever 144 and a master clutch control valve assembly 100M.

Transmission control mechanism 100 in a power transmission system of a vehicle a transmission shift lever 102, a shifter arm 106, an input ratchet shifting assembly 108, an input shift ratchet and cam assembly 110, a drive shaft 112, a plurality of keys 113, a driven shaft 114, a coupler 115, a driven shaft drive gear 116, a driven shaft driven gear 118, a plurality of rail shifting means 120, a plurality of bushes 121, a plurality of rail shifter support members 122, a plurality of pawl assemblies 124, a plurality of pawl kicker means 126, a lever position control valve assembly 136, an active detent control valve assembly 138, a detent control valve assembly 140, a clutch selection control valve assembly 142, a gear shift lever position valve lever 144 and a master clutch control valve assembly 100M.

A transmission selectively coupled to an engine crankshaft of an internal combustion engine arranged on a vehicle includes an input shaft, a mainshaft, an output shaft, a first countershaft and a second countershaft. A first gear set includes a first mainshaft gear arranged on the mainshaft, a first countershaft gear arranged on the first countershaft and a first countershaft gear arranged on the second countershaft. A second gear set includes a second mainshaft gear arranged on the mainshaft, a first countershaft gear arranged on the second countershaft and a second countershaft gear arranged on the second countershaft. The gears of the first gear set all have a first helix angle. The gears of the second gear set all have a second helix angle. The first and second helix angles are selected to provide gear constant leading whereby thrust forces directed onto the first and second countershafts are balanced.