Pumps – Condition responsive control of drive transmission or pump... – Plural pumps with individual or relative control
Patent
1993-03-09
1994-03-01
Bertsch, Richard A.
Pumps
Condition responsive control of drive transmission or pump...
Plural pumps with individual or relative control
417223, F04B 4908
Patent
active
052901530
ABSTRACT:
A two stage main pump has a first pump drivingly connected to a transmission input shaft, and a second pump is drivingly connected to the output member of a friction clutch that is spring applied and pressure released. The input member of the clutch is driven, through a pair of one-way clutches, by the transmission input shaft or the vehicle output, whichever is rotating more rapidly.
REFERENCES:
patent: 2464144 (1949-03-01), McConaghy
patent: 3105441 (1963-10-01), Grill et al.
patent: 3961859 (1976-06-01), Cygnor et al.
Bertsch Richard A.
General Motors Corporation
Korytnyk Peter
Scherer Donald F.
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