Cylinder-piston arrangement

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United States of America Patent

PATENT NO 7669516
SERIAL NO

11725044

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Abstract

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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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Patent Owner(s)

Patent OwnerAddress
PFEIFFER VACUUM GMBH35614 ASSLAR

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Cromm, Thomas Weilburg-Kubach, DE 3 3
Sachs, Ronald Dortmund, DE 4 3
Zabeschek, Stefan Asslar-Berghausen, DE 4 7

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