Patent ID: 6488264
Filing Date: 2002-12-03
Classification: B25F,B44B,F15B,Y10S

Abstract:
Governor valve device for a pressure fluid operated tool having a housing (1), a drive chamber 17 provided therein, and a pressure fluid channel (19-22) leading to said drive chamber, said device comprising a seal ring (23) provided in said channel and a valve ball (24) cooperating with said seal ring, characterized therein that the valve ball (24) is provided in a cavity (25), open towards the seal ring (23), in a piston (26) which is passed transversally through said chamber and housing, that a spring-loaded member (30) is arranged to be capable of penetrating into the cavity (25) the urge the valve ball (24) against the seal ring (23), and that the piston (26) is movable in the housing (1) and has sufficient length that at least one of two opposed ends (33, 34) of said piston alternatively protrudes, respectively, from at least one of two opposite sides (36, 37) of the housing, the piston movement causing limiting walls (38, 39) of the cavity of the piston to move the valve ball (24) out of and into, respectively, a sealing position against the seal ring (23) in order to permit and to prevent, respectively, the passage of pressure fluid to the drive chamber (17).