| 摘要 |
<p>The vacuum pump (1) has shaft (4,6), and pistons (40,42,44,46,48,50) comprising a piston profile surface and a hole for receiving the shaft. A form-fitting element has one portion extended into the shaft recess and another portion located in the piston recess. A securing element fixes the form-fitting element and exerts pressing force on the form-fitting element.</p> |
