PISTON RING AND A FLUID SUCKING/DISCHARGE DEVICE WITH THE PISTON RING
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United States of America Patent
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Issued Date -
Oct 30, 2008
app pub date -
Apr 25, 2008
filing date -
Apr 26, 2007
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A piston ring is made of high polymers and fits in a circumferential groove of a piston in a cylinder of a compressor or a vacuum pump. A plurality of cuts are formed in the piston ring. When the piston ring is turned inside up or pulled out radially, it is stretched out. The piston ring can easily be fitted in the circumferential groove of the piston to prevent a fluid from leaking through between the piston and the cylinder with sufficient sealing capability.
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