Cylinder-piston arrangement
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United States of America Patent
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Mar 2, 2010
Issued Date -
N/A
app pub date -
Mar 15, 2007
filing date -
Mar 18, 2006
priority date (Note) -
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Abstract
A sealing arrangement which is designed for a cylinder-piston arrangement of a reciprocating piston vacuum pump for sealing a gap between a cylinder wall and a piston displaceable in the cylinder, includes at least one L-shaped annular seal having one of its leg secured on the piston for providing a static sealing, and its another free leg adjoining the cylinder wall for providing a dynamic sealing, and an annular guide member arranged on the piston between the piston and the cylinder on a side of the seal remote from a compression chamber of the pump.
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