| 摘要 |
A rotary drive mechanism for use as a motor, a pump or a compressor includes a housing (13) having a chamber (1) therein defined by a peripheral wall. A rotor (3) is rotatably mounted in the chamber (1) and has two longitudinal seal edges (5) that contact the profiled wall. The rotor (3) is mounted for rotation about a rotation axis (9) and for sliding movement relative to the rotation axis in a direction perpendicular thereto. The rotation axis (9) is offset form the centre of the chamber.
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