Infinitely variable steering transmission

Details Infinitely variable steering transmission Infinitely variable steering transmission

1987-12-03

1989-04-04

Diehl, Dwight G.

Machine element or mechanism

Elements

Gear casings

74720, 747205, 180 644, F16H 4710

Patent

active

048174602

ABSTRACT:
An infinitely variable steering transmission is constructed to utilize the unidirection, continuous outputs of a pair of traction drive units for accelerating and decelerating a track-laying vehicle through a first forward and reverse propulsion range and a plurality of higher forward propulsion ranges and for developing steering power in all ranges. The transmission includes a pair of interconnected output planetary gears sets and a single input planetary gear set for combining the traction drive unit outputs and the constant speed input from a suitable prime mover for first and third range propulsion and steering power. Second range propulsion and steering power is obtained exclusively from the traction drive units in a manner to also provide steer cancellation, a continuous drive unit stroking pattern, and synchronous range shifting.

REFERENCES:
patent: 3545303 (1970-12-01), Whelahan
patent: 3575066 (1971-04-01), Livezey et al.
patent: 3583256 (1971-06-01), Livezey
patent: 3590658 (1971-07-01), Tuck
patent: 4345488 (1982-08-01), Reed
patent: 4485691 (1984-12-01), Reed
patent: 4569251 (1986-02-01), Greenwood
patent: 4682515 (1987-07-01), Reed
patent: 4718299 (1988-01-01), Greenwood

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