Combined oil ring
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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N/A
Issued Date -
May 29, 2008
app pub date -
Sep 13, 2007
filing date -
Nov 29, 2006
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A combined oil ring 1 is comprised of an oil ring 2 with a generally I-shaped cross section including upper and lower rails 6, 7 joined by a web 8 for sliding on an inner circumferential surface 10 of a cylinder 9, and a coil expander 3 to press the oil ring 2 radially outwards. The combined oil ring 1 contains a seal member 14 for sealing a gap of the oil ring 2 and capable of making contact with the upper rail 6 in an outer circumferential groove 12 formed by the web 8 and the upper and lower rails 6, 7. The seal member 14 may include a structure where the edge of the seal member 14 is bent, and catches in a window hole 13 formed on the web 8 of the oil ring 2.
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