Device for adjusting the pressure in a hydraulic jack
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United States of America Patent
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Mar 7, 2006
Issued Date -
N/A
app pub date -
Apr 7, 2004
filing date -
Apr 9, 2003
priority date (Note) -
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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.
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