Selectively engageable and disengageable drive for wheeled devic

Details Selectively engageable and disengageable drive for wheeled devic Selectively engageable and disengageable drive for wheeled devic

1980-08-04

1982-10-05

Mitchell, David M.

Motor vehicles

Power

Including traction motor of kind driven by noncompressible...

180 74, 180243, B60K 700

Patent

active

043524060

ABSTRACT:
A hydraulic gear motor is supported by supporting structure secured to an axle adjacent a ground engaging wheel. The support structure is pivotally mounted upon a bolt or shaft extending upwardly from the supporting structure and the hydraulic motor, together with a sprocket driven thereby, is capable of vertical movement on the bolt or shaft and is held in the uppermost position by means of a detachable lock pin through the bolt or shaft. A length of sprocket chain is secured in the form of a circular track, to adjacent the rim of the wheel and concentric with the rotatable axis thereof. When the hydraulic motor and sprocket are in the uppermost position, the sprocket engages the inner surface of the chain whereby rotation of the sprocket, rotates the ground engaging wheel. A pivotal retaining bracket holds the hydraulic motor in the innermost position when the sprocket engages the chain. When the drive is to be disengaged, the lock pin is removed so that the hydraulic motor and the sprocket drop downwardly and disengage from the chain and, if necessary, the pivotal bracket is swung clear of the support structure so that the hydraulic motor and sprocket can be swung free in a horizontal plane.

REFERENCES:
patent: 2399778 (1946-05-01), Wike
patent: 2798565 (1957-07-01), Rosenthal
patent: 3094186 (1963-06-01), Lappin
patent: 3265147 (1966-08-01), Coordes
patent: 3675730 (1972-07-01), Kontranowski

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