Reciprocating engine
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Dec 6, 2011
Grant Date -
Feb 4, 2010
app pub date -
Oct 20, 2006
filing date -
Oct 20, 2006
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A piston 2 includes a piston upper body 8 made up of a crown portion 3 for receiving combustion pressure and a land portion 7 having piston ring grooves 4, 5, and 6, as well as a skirt portion 9 formed on the lower side of the piston upper body 8, and a pin boss portion 11 for supporting a piston pin 10. The land portion 7 also includes an outer peripheral surface 16 of the aforementioned piston upper body 8. The land portion 7 is referred to as the outer peripheral surface 16 of the piston upper body 8. In the piston 2, reference numeral 12 denotes a thrust side, and reference numeral 13 denotes an anti-thrust side. The piston 2 is formed such that the piston upper body 8 is off-centered toward the anti-thrust side 13 with respect to a center line 14 of the piston 2.
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