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| Number | Title | Issue Date |
| 5836234 | Single CAM reciprocating linked piston type engine A single cam reciprocating linked piston type engine utilizes a swing-link linking mechanism to make two pistons arranged at an included angle slide alternately up and down, or utilizes a linking-rod to make two pistons arranged on an identical axis recip... | 11/17/1998 |
| 5403168 | Double acting pump having inlet and outlet poppet valves A double acting pump having inlet and outlet poppet valves clamped to the pump housing in proximity to an inlet manifold and an outlet manifold. The end portion of each cylinder in the double acting pump is provided with a sloped wall to prevent debris in... | 04/04/1995 |
| 5199345 | Piston compressor for the oilfree compression of a gas The piston compressor exhibits at least one piston (7) which is supported to be freefloating and connected via a piston rod (6) to a crosshead (5). The piston rod slides in a guide bearing (8) next to the crosshead in a gland (11) next to the cylinder. A ... | 04/06/1993 |
