| 摘要 |
Volumetric (positive displacement) machine, pump or compressor, which is sealed. The connection between the motor 1 and the crankshaft 5 is provided by a two part magnetic coupling 3, 4 which two parts are separated by a continuous wall 9. The casing 25 is therefore sealed, and the gases pumped cannot escape therefrom. Application to the pumping of dangerous, irradiant or expensive gases. <IMAGE>
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