Hydrostatic pump destroke braking mechanism

Details Hydrostatic pump destroke braking mechanism Hydrostatic pump destroke braking mechanism

2006-07-18

2006-07-18

Fleming, Faye M. (Department: 3616)

Motor vehicles

Motor as source of power for other machine

Reexamination Certificate

active

07077221

ABSTRACT:
A mechanism that interconnects the service brakes of a hydrostatically driven tractor with the hydrostatic pump to more effectively slow or stop the tractor, for example when towing a trailer. The service brakes are connected to a control servo on the hydrostatic pump such that actuation of the service brakes will destroke the pump, eliminating or reducing the torque of the pump as a factor to be overcome in slowing or stopping movement of the tractor. Both mechanical and electronic versions of the mechanism are effective in slowing and stopping the tractor.

REFERENCES:
patent: 4281737 (1981-08-01), Molzahn
patent: 4444286 (1984-04-01), Hawkins et al.
patent: 5052511 (1991-10-01), Hunt
patent: 5573312 (1996-11-01), Muller et al.
patent: 6027177 (2000-02-01), Ferguson et al.
patent: 6038858 (2000-03-01), Mies
patent: 6227326 (2001-05-01), Kowalyk et al.

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