Motors: expansible chamber type – Plural relatively movable or rigidly interconnected working... – Separate valve means actuatable by a common nonmanual...
Patent
1978-07-03
1979-10-09
Hershkovitz, Abraham
Motors: expansible chamber type
Plural relatively movable or rigidly interconnected working...
Separate valve means actuatable by a common nonmanual...
91427, 91448, 91453, 91531, 180 77S, 414694, F15B 1116, F15B 1526
Patent
active
041701682
ABSTRACT:
A loader/backhoe hydraulic system and control valve assembly therefor characterized in that each of a plurality of directional control valves is operative through an associated selector valve to control the operation of either of a pair of cylinders connected to said selector valve. The loader/backhoe herein is further characterized in that the control valve assembly and oil tank are unitized and mounted under the floor of the tractor for simplified piping and access for servicing.
REFERENCES:
patent: 3175580 (1965-03-01), Krehbiel
patent: 3211065 (1965-10-01), Hunger
patent: 3257013 (1966-06-01), Arnold
patent: 3512453 (1970-05-01), Balzer
patent: 3768367 (1973-10-01), Fuzzell
patent: 3944035 (1976-03-01), McRay
patent: 3966065 (1976-06-01), Jones
Hershkovitz Abraham
Parker-Hannifin Corporation
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