Wiper Arrangement and Compressor with such a Wiper Arrangement
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United States of America Patent
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Issued Date -
Aug 18, 2011
app pub date -
Feb 15, 2011
filing date -
Feb 15, 2010
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
Conventional wiper arrangements with cut rings suffer from unavoidable leakage and, in particular in an embodiment as metallic wiper ring with a sharp wiping edge, scratch on the surface of the piston rod which can be damaged in this manner. In order to eliminate these problems, a wiper arrangement is proposed in which the radially inner circumferential surfaces 6, 7 of the wiper ring 2 and the cover ring 3 form a common radially inner wiping surface 10 and on the cover ring 3 or the on the wiper ring 2, an intake surface 8 is provided which is adjacent to the wiping surface 10 and which is inclined radially outwardly at an angle .alpha., preferably between 2.degree. and 15.degree., with respect to the wiping surface 10.
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