SEALING RINGS
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United States of America Patent
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N/A
Issued Date -
Feb 26, 2009
app pub date -
May 9, 2008
filing date -
Aug 23, 2007
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
This invention relates to sealing rings for sealing between relatively moveable parts of an engine. A sealing ring can is typically located in the groove 11 of a piston 12 to seal between the piston 12 and the cylinder wall 13. In a typical embodiment one end 18 of the ring in 10 is formed with a projecting tongue 19, whilst the other end 20 has a groove 21. In use, the tongue 19, lies within the groove 20 and the length of the tongue 19 and groove 21 are selected so that a part of the tongue 19 will remain within the groove 21 throughout any design thermal expansions or contraction of the ring 10.
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