Reciprocating engine
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United States of America Patent
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Nov 30, 1993
Grant Date -
N/A
app pub date -
Mar 13, 1992
filing date -
Aug 3, 1990
priority date (Note) -
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status (Latency Note)
Importance
Abstract
An engine (40) comprising a piston (2); a top ring (3) and a second ring (4) attached to the piston (2); partitioning members (9)(10) attached to the piston (2) and connecting the top ring (3) and the second ring (4) so as to form a gas chamber (8) at the side surface of the piston (2); a gas passage (15) for communicating the gas chamber (8) to an upper surface (7) of the piston.
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