Tecumseh Products Company

Vance E Coble

Norman E Jolliff

Richard T Ruebusch

Kevin J Johnson

C Paul Cox

A modular, self-contained, bi-directional wheel clutch unit selectively attachable and detachable as a unit to and from an axle, the unit including a rotatable wheel-driving hub including a casing portion, a clutch cage disposed in the casing portion and surrounded thereby and which has a plurality of circumferentially-distributed openings, a rotatably driven cam element disposed in the casing portion and surrounded by the clutch cage and which has a plurality of discrete surfaces thereon, and a plurality of rollers rotatably disposed within the casing portion and within the clutch cage openings. The rollers are located between the casing portion and the cam element discrete surfaces and have an engaged position wherein the cam element and the hub are in binding engagement through the rollers and the hub is rotatably driven by the cam element, and a disengaged position wherein the hub is freely rotatable relative to the cam element.

Modular bi-directional overrunning wheel clutch

An implement having an engine and a transaxle which may be rigidly and directly attached to one another in a vertically stacked orientation to form an engine and transaxle module. The implement also includes ground engaging wheels attached to the transaxle axles, a handle allowing control of the implement, and one of a plurality of interchangeable working devices attached to the engine and transaxle module. For example, the implement may be a snow thrower having an auger assembly which is operatively coupled to one of the engine and the transaxle. The transaxle may include a pair of axially aligned axles which are selectively coupled together, such that when the axles are coupled together, the wheels are rotatably fixed together, and when the axles are not coupled together, the wheels are free to rotate relative to each other. The transaxle may further include a pair of housing portions, at least one housing portion having a pair of recesses in which a pair of bushings are respectively disposed, each bushing supporting an end of each of a pair of shafts of the reduction gearing of the transaxle.

Implement having engine and transaxle module

A fully integrated hydrostatic transaxle formed of three housing members, a hydrostatic transmission and axle housing member joined to a differential housing member along a vertical plane and joined to a hydrostatic transmission mounting plate and cover member along a horizontal plane. A hydrostatic transmission is connected to and suspended from the mounting plate and cover member. In a second embodiment, a hydrostatic transmission is mounted to a hydrostatic transmission and axle housing member, which in turn is fastened to a center housing member. The center housing member is in turn connected to an axle and differential housing member. The interfaces defined by where the housing members are joined together define substantially parallel vertical planes. Means for effectively unlocking the transmission and the differential is provided so that the operator can push the vehicle without encountering the resistance of back driving the hydrostatic transmission. A neutral position adjustment mechanism provides a tactile indication of the neutral position, and the mechanism can be readjusted to define the correct neutral position.

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Campbellsburg, IN, United States of America

Vance E Coble