Patent ID: 6101922
Filing Date: 2000-08-15
Classification: F15B,F16F

Abstract:
A cylinder comprising:a cylindrical casing having a casing wall extending along a longitudinal axis and defining an interior, an open end, and a closed end, said casing wall having a first annular groove adjacent said open end, one of said closed end and said casing wall having a first port for delivering fluid into said interior of said casing wall;a cap mounted to said open end, said cap including a second annular groove and a second port for delivering fluid into said interior of said casing wall, said second annular groove being aligned with said first annular groove of said casing wall when said cap is mounted to said open and defining a cavity therebetween;a wire member positioned in said cavity, said wire member limiting longitudinal movement of said cap with respect to said cylindrical casing and being uncoupled to either of said cap or said casing and thus being unrestrained in said cavity and further permitting unrestrained 360.degree. rotational movement of said cap with respect to said cylindrical casing about said longitudinal axis and, thereby, permitting adjustment of the position of said second port about said longitudinal axis of said cylindrical casing; anda piston rod assembly positioned in said interior of said casing, said piston rod including a rod end and a piston, said piston including at least one seal sealing against an inner surface of said casing wall, said piston dividing said interior into first and second fluid reservoirs, said first port being in fluid communication with said first reservoir, said second port being in fluid communication with said second reservoir, and said rod end extending through said cap moving between extended and retracted portions as a function of fluid pressures in said first and second fluid reservoirs.