Exchange and/or scavenging device for a circuit comprising...

Details Exchange and/or scavenging device for a circuit comprising... Exchange and/or scavenging device for a circuit comprising...

2007-06-19

2007-06-19

Leslie, Michael (Department: 3745)

Power plants

Pressure fluid source and motor

Condition responsive control of motive fluid flow

C060S329000

Reexamination Certificate

active

10533095

ABSTRACT:
The device comprises a replenishing valve (24) having an opening control chamber suitable for being connected to a main duct (12, 14) of the circuit, and a closing control chamber, the pressure in said chambers making it possible to cause the moving member of the replenishing valve to move so as either to connect or not to connect the main duct to which said valve is connected to a pressure-free reservoir. The device further comprises a control valve (46) which is controlled as a function of at least one control parameter representing a state of the circuit other than pressure in said main duct to which said replenishing valve (24) is connected, in order to connect the closing control chamber to the pressure-free reservoir or in order to isolate said chamber from said reservoir.

REFERENCES:
patent: 3561214 (1971-02-01), Bobst
patent: 4354351 (1982-10-01), Dezelan
patent: 6336325 (2002-01-01), Gluck et al.
patent: 6339928 (2002-01-01), Gollner
patent: 196 51 988 (1997-06-01), None

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