Motors: expansible chamber type – With motive fluid valve – Self-acting valve
Reexamination Certificate
2006-03-07
2006-03-07
Lopez, F. Daniel (Department: 3745)
Motors: expansible chamber type
With motive fluid valve
Self-acting valve
C137S118060, C188S282700, C188S282800, C188S322210
Reexamination Certificate
active
07007588
ABSTRACT:
The invention relates to a device for adjusting the pressure in the chambers of a hydraulic jack comprising a hollow valve seat extending substantially longitudinally between two end sections, the body of the valve seat being connected to a source of pressurised fluid, each of the end sections of the valve seat being linked to a chamber of the hydraulic jack and adapted to receive a valve allowing to control the refilling with hydraulic fluid of said chamber of the jack, characterised in that a valve return spring is placed inside said valve seat and in that each of the ends of said valve return spring is attached to one of said valves.
REFERENCES:
patent: 6390254 (2002-05-01), Bennett et al.
patent: 2150259 (1985-06-01), None
patent: 11063081 (1999-06-01), None
Blakely & Sokoloff, Taylor & Zafman
Goodrich Actuation Systems SAS
Lopez F. Daniel
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