Power plants – Pressure fluid source and motor – Having condition responsive control in a system of distinct...
Reexamination Certificate
2011-07-26
2011-07-26
Leslie, Michael (Department: 3745)
Power plants
Pressure fluid source and motor
Having condition responsive control in a system of distinct...
C060S469000
Reexamination Certificate
active
07984611
ABSTRACT:
A hydraulic control system for controlling preferably at least two consumers, has a pump with an adjustable delivery quantity supplying pressure fluid, an adjustable metering orifice with which the consumers are each associatable, a power beyond connection to which at least one power beyond consumer is connectable, an inlet pressure governor unit situated downstream of the pump and acted on in a closing direction by a load pressure of the consumers or of the at least one power beyond consumer, the inlet pressure governor unit being provided in a pressure fluid flow path between the pump and at least one of the two consumers, while the power beyond connection branching off from a pressure fluid flow path between the pump and the inlet pressure governor unit, a tank, the inlet pressure governor unit in a spring-prestressed position closing a connection to the at least one of the two consumers and the tank, and in another position a pressure fluid connection to the tank is opened, the inlet pressure governor unit being movable into an additional position in which a throttled connection to the tank is opened.
REFERENCES:
patent: 5069111 (1991-12-01), Loffler et al.
patent: 7870728 (2011-01-01), Keuper et al.
patent: 2005/0284143 (2005-12-01), Mamei et al.
patent: 2007/0169473 (2007-07-01), Esders
patent: 2009/0007556 (2009-01-01), Djurovic et al.
patent: 10 2006 008 940 (2007-08-01), None
Djurovic Milan
Keuper Gerhard
Loedige Heinrich
Stachnik Peter
Leslie Michael
Robert & Bosch GmbH
Striker Michael J.
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