Auxiliary hydrostatic drive system

Details Auxiliary hydrostatic drive system Auxiliary hydrostatic drive system

1986-02-05

1987-09-29

Love, John J.

Motor vehicles

Power

Including traction motor of kind driven by noncompressible...

60420, 180307, B60K 1734

Patent

active

046963677

ABSTRACT:
A combine includes a variable displacement, reversible delivery pump which drives main drive wheels via a main hydraulic drive unit and which drives a pair of steerable wheels via auxiliary hydraulic drive units. A pair of pressure-limiting and relieving valves are connected between the auxiliary drive units and the pump so that auxiliary drive units with lower pressure ratings than that of the main drive units can be used. The valves relieve pressure from the auxiliary drive units during dynamic braking.

REFERENCES:
patent: 3092970 (1963-06-01), Sampietro
patent: 3481419 (1969-12-01), Kress et al.
patent: 3506081 (1970-04-01), Rumsey
patent: 3736732 (1973-06-01), Jennings et al.
patent: 4140196 (1979-02-01), Brewer
patent: 4244184 (1981-01-01), Baldauf et al.
patent: 4570741 (1986-02-01), McCoy

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