Mechanical multiplier for the purpose of speed and steering cont

Details Mechanical multiplier for the purpose of speed and steering cont Mechanical multiplier for the purpose of speed and steering cont

1976-01-21

1977-06-28

Peters, Jr., Joseph F.

Motor vehicles

Steering by driving

Independently operable drive motors

B62D 1104

Patent

active

040319750

ABSTRACT:
The invention is concerned with an improvement in a control system for a hydrostatic drive of a vehicle comprising a pair of hydrostatic pumps the output of each of which is adjustable by moving an arm attached to a servo valve controlling the displacement of said pumps, each pump powering a respective hydraulic motor which drives a respective ground engaging means of said vehicle. The improvement of the present invention mechanically controls the speed and steering functions of the system. It comprises a pair of adjusting means, one communicating with each of the pumps, each comprising a frame adjacent the pump, a first crank mounted centrally to the frame, a first end of the first crank drivingly linked to the arm; a second crank mounted centrally to the frame, a first end of the second crank drivingly linked to a second end of the first crank and a third crank mounted centrally to the frame, a first end of the third crank drivingly linked to the second end of the first crank and a second end of the third crank drivingly linked to steering linkage means. The improved arrangement further includes tying means drivingly mounted adjacent a second end of each of the second cranks linking movement thereof.

REFERENCES:
patent: 3362493 (1968-01-01), Davis
patent: 3500633 (1970-03-01), Livezey
patent: 3504493 (1970-04-01), Potter

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