Patent ID: 6276257
Filing Date: 2001-08-21
Classification: F15B,Y10T

Abstract:
A working cylinder which comprises a cylinder barrel, a first end cover at one end of said cylinder barrel, and a movable piston in said cylinder barrel which defines a first working chamber in said cylinder barrel between said piston and said first end cover, said end cover defining a supply port for input of working medium, an exhaust port for discharge of working medium, a first channel for flow of working medium to and from said first working chamber, a second channel for flow of working medium to said exhaust port, and a single valve element which is movable between a first position where said second channel is closed and working medium flows from said inlet port to said first working chamber, and a second position where said second channel is opened and working medium flows from said first working chamber through said first channel to said second channel and out said outlet port.