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According to yet another aspect of the invention, a cylinder includes a cylindrical casing which includes a casing wall and a longitudinal axis. The casing wall defines an interior and first and second opposed open ends and has a first annular groove adjacent the first open end and a second annular groove adjacent the second open end. A base member is mounted to the first open end of the cylindrical casing which includes a third annular groove and a first seal for sealing against the casing wall and a first port for delivering fluid into one of two fluid reservoirs in the interior of the cylindrical casing. The third annular groove aligns with the first annular groove on the casing wall when the base member is mounted to the first open end and defines a first cavity therebetween. A cap is mounted to the second open end of the cylindrical casing and includes a second port and an annular collar. The annular collar includes a fourth annular groove and a second seal sealing against the casing wall. The fourth annular groove aligns with the second annular groove of the casing wall when the cap is mounted to the second open end and defines a second cavity therebetween. First and second retaining members are respectively positioned in the first and second cavities to thereby limit longitudinal movement of the base member and the cap, respectively, with respect to the casing wall and permit rotational movement of the base member and the cap, respectively, about the casing wall. Furthermore, the retaining members permit independent adjustment of the respective positions of the first and second ports about the longitudinal axis of the cylindrical casing. A piston rod assembly is positioned in the interior of the casing wall, which includes a rod end and a piston, with the piston including at least one piston seal sealing against the inner surface of the casing wall. The piston divides the interior of the casing wall into first and second reservoirs, with the first port being in fluid communication with the first reservoir, and the second port being in fluid communication with the second reservoir. The rod end extends through the cap and moves between extended and retracted positions as a function of fluid pressures and the respective reservoirs. |
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