The illustrated two-speed accessory drive transmission includes centrifugal clutch shoes and a planetary friction unit, with spring means for urging the shoes into frictional driving contact with a clutch drum and thereby actuating the planetary unit during low engine speeds for driving the output member in overdrive, and a one-way clutch for interconnecting the output and input in a direct drive relationship upon disengagement of the shoes from the clutch drum under the action of centrifugal fo...

A transmission having engagement mechanisms which employ an engagement inner having cam surfaces forming the race thereof, an engagement outer having a circular outer race and rollers therebetween. A cage mechanism angularly positions the rollers such that they may be wedged between the cam surfaces and the outer race so as to interlock the engagement inner and outer. Actuator mechanisms are employed which are axially movable to engage and angularly position the cages relative to the engagement ...

A transmission comprising a change speed mechanism and a differential housed in a transmission case. The change speed mechanism includes drive gears mounted on a transmission shaft, and driven gears meshed with drive gears. The differential includes a differential case having elongated axle-bearing bosses extending to inside walls of the transmission case. The driven gears are mounted on one of the elongated bosses to be rotatable therewith. The differential case is supported by rear wheel axles...

A mechanical transmission with a variable speed ratio that generates two oscillatory rotary motions that may have the velocities thereof selectively increased or decreased by concurrently increasing or decreasing the effective lengths of a pair of crank arms, with one of the oscillating rotary motions being rectified by two over riding clutches to become a pulsating rotary motion in a constant direction, and the pulsating and oscillating rotary motions thereafter being combined by a differential...

An infinitely variable ratio transmission is disclosed in which the rotary output of the crank shaft of an internal combustion engine is imparted to an output or drive shaft in a stepwise manner via an adjustable speed drive linkage and Sprague clutch arrangement coupled to the crank and output shafts. The output shaft is in turn coupled to the wheels of a vehicle via a direction change or forward/reverse mechanism and gear/differential assembly. Operation of the adjustable speed drive linkage m...

A transmission rotatable coaxially about a crankshaft. The transmission is rotatable to three positions: forward, idle, and reverse. Four pulleys are rotatably affixed to the casing such that each pulley occupies the corner of an imaginary square, the diagonals of the square intersecting the longitudinal axis of the crankshaft. The planes of the pulleys all lie in a single plane generally perpendicular to the crankshaft. Thus as the casing is rotated the pulleys rotate coaxially about the cranks...

An infinitely variable speed transmission having a hydraulic torque converter or other variable speed variable torque mechanism supplying reaction to a plurality of planetary gearsets arranged in series, output member of first gearset connected to input member of following gearset, with the power source that drives the torque converter also driving the first gearset input member. The first gearset always operates in split torque drive. All except the first gearset reaction members have one way b...

The illustrated two-speed accessory drive transmissions include wedge-shaped centrifugal weights and a planetary friction unit, with spring means for wedging the weights into frictional driving contact with clutching faces on the input means and/or the carrier of the planetary unit during low engine speeds for driving the output member in overdrive, and a one-way clutch for interconnecting the output and input in a direct drive relationship upon disengagement of the wedge-shaped weights from the...

A transmission, such as the V-type marine transmissions, having a drive shaft at least partially supported by a driven shaft within a gear box having a freely rotatable drive gear, an idler gear and a driven gear operatively arranged with a coupler on the drive shaft to be normally stationary in a neutral position of the coupler co-rotative in another and counter-rotative in still another position of the coupler.

An automatic transmission providing variable speed ratio and reverse drives between drive and driven shafts and including friction-engaging devices, in the form of friction clutches and brakes, for establishing the drives. The devices are operable by hydraulic servomotors, certain servomotors each having first and second pistons arranged in tandem, with the first piston being movable by hydraulic fluid to engage the associated friction device, the second piston being movable by hydraulic fluid t...