Patent ID: 7007588
Filing Date: 2006-03-07
Classification: F15B,Y10T

Abstract:
1. Device for adjusting the pressure in the chambers of a hydraulic jack comprising a hollow valve seat ( 5 ) extending substantially longitudinally between two end sections, the body of the valve seat ( 5 ) being connected to a source of pressurised fluid ( 18 ), each of the end sections of the valve seat ( 5 ) being linked to a chamber of the hydraulic jack and adapted to receive a valve ( 7 a , 7 b ) allowing to control the refilling with hydraulic fluid of said chamber of the jack, characterised in that a valve return spring ( 6 ) is placed inside said valve seat ( 5 ) and in that each of the ends of said valve return spring ( 6 ) is attached to one of said valves ( 7 a , 7 b ).