Hydraulic piston cylinder device with a valve element

Details Hydraulic piston cylinder device with a valve element Hydraulic piston cylinder device with a valve element

F - Mech Eng,Light,Heat,Weapons

15

B

138/89

F15B 15/14 (2006.01)

Patent

CA 1172137

Abstract A hydraulic piston cylinder device comprising a cylinder (1), a piston (2) dividing the cylinder into two cylinder spaces (A and B), and valve elements (7,9) between the cylinder spaces (A and B) and the respective pressure medium pipes (11,12). The problem is to accomplish a hydraulic piston cylinder device in which the pressing or tractive force of the cylinder is maintained even if the external pressure led into the cylinder would stop. To solve this problem, the piston (2) is elastically compressible by the pressure of the cylinder (1) and the valve members (7,9) are coupled to each other so that when one of the valve members (7 or 9) is closed the other (9 or 7) cannot be closed. The piston is divided in the axial direction into two successive parts (21,22) spaced from each other, between which parts there is elastic material (3).

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