Hydraulic system with variable standby pressure

Details Hydraulic system with variable standby pressure Hydraulic system with variable standby pressure

2006-11-30

2009-11-10

Leslie, Michael (Department: 3745)

Motors: expansible chamber type

With motive fluid valve

Relatively movable serial valves

C060S420000

Reexamination Certificate

active

07614335

ABSTRACT:
A hydraulic system is disclosed. The hydraulic system includes a source of pressurized fluid, a low pressure source, and a plurality of actuators. The hydraulic system also includes a plurality of valves configured to selectively communicate fluid to and from the plurality of actuators. The hydraulic system further includes a first valve disposed downstream of the plurality of valves. The first valve is configured to communicate fluid from the source of pressurized fluid toward the low pressure source.

REFERENCES:
patent: 5277027 (1994-01-01), Aoyagi et al.
patent: 5447027 (1995-09-01), Ishikawa et al.
patent: 5575148 (1996-11-01), Hirata et al.
patent: 5664477 (1997-09-01), Koehler
patent: 5680760 (1997-10-01), Lunzman
patent: 5873244 (1999-02-01), Cobo et al.
patent: 5927072 (1999-07-01), Vannette
patent: 5996341 (1999-12-01), Tohji

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