Tip seal back-up member for use in fluid apparatus of the scroll type
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United States of America Patent
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-
Nov 22, 1983
Issued Date -
N/A
app pub date -
Mar 24, 1983
filing date -
Feb 9, 1981
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A tip seal back-up member is disclosed for use in fluid apparatus of the scroll type, which member comprises a strip of material extending longitudinally in generally spiroidal configuration about a reference axis and having a preformed configuration such that its radially inner and outer edge portions are disposed axially with respect to each other. The strip of material comprises an elastic material such that as one of the edge portions is displaced axially toward the other, an opposing spring force is developed. In operation, the back-up member is disposed within a groove located in a tip surface of a wrap element in fluid apparatus of the scroll type, between a bottom wall of the groove and a tip seal. Preferably, the strip of material is generally flat between its radially inner and outer edge portions and is constructed from steel.
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