Power plants – Pressure fluid source and motor – Having condition responsive control in a system of distinct...
Patent
1991-12-31
1994-02-01
Look, Edward K.
Power plants
Pressure fluid source and motor
Having condition responsive control in a system of distinct...
60484, 91511, 180 658, 180 63, F16D 3102, B62D 1100
Patent
active
052823636
ABSTRACT:
A hydraulic circuit for running a crawler vehicle which comprises a running frame portion provided with motors for running the crawler vehicle and an upper swivel portion turnably disposed on the running frame portion via a swivel joint. Electro-magnetic proportional flow directional control valve (a directional control valves) (15) for controlling the running motors are disposed between the swivel joint (41) and the running motors (19). The number of the high pressure passages in the swivel joint (41) can be reduced, because of increase of pressure resistance, the size of the swivel joint can be small, and accordingly, the hydraulic circuit for running a crawler vehicle can be inexpensive, and possibility for leakage of pressure oil becomes low.
REFERENCES:
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patent: 3855792 (1974-12-01), Bojas et al.
patent: 4394886 (1983-07-01), Rathje et al.
patent: 4415050 (1983-11-01), Nishida et al.
patent: 4467604 (1984-08-01), Forster
patent: 4756156 (1988-07-01), Appel
patent: 4938023 (1990-07-01), Yoshino
Asano Yoji
Endo Takuma
Nakashima Hisashi
Ogawa Kazunori
Look Edward K.
Nguyen Hoang
Teijin Seiki Co. Ltd.
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