Piston
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United States of America Patent
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-
Feb 21, 1989
Issued Date -
N/A
app pub date -
Apr 27, 1984
filing date -
Dec 28, 1981
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A crosshead piston 10 comprises a head member 18 and a skirt member 20, each of which can be secured independently to a piston pin 14. The skirt 20 has a reduced diameter upper end portion 66 which fits within lower end 24 of the head member ring belt portion 23, thereby exposing maximum head member surface area to a cylinder or cylinder sleeve wall for cooling. Preferably, the skirt end portion 66 defines a seal groove 32 which contains a metal ring 67 for sealing the gap 62 between the head member and skirt member.
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