Two-cycle engine
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United States of America Patent
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-
Dec 8, 1987
Grant Date -
N/A
app pub date -
Feb 12, 1986
filing date -
Feb 15, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A two-cycle engine includes an engine body having at least one cylinder, the cylinder having an exhaust port and at least one scavenge port disposed generally in opposed relation to the exhaust port. A piston is received in the cylinder for reciprocal movement therealong and having an outer peripheral surface for closing the exhaust and scavenge ports during the reciprocal movement thereof. The piston has a transverse bore extending therethrough with opposite ends of the transverse bore opening to the outer peripheral surface of the piston. The opposite ends of the transverse bore is capable of being brought into facing relation to the opposed exhaust and scavenge ports, respectively, during the reciprocal movement of the piston. A hollow wrist pin is received in the transverse bore and retained therein, one end of the wrist pin being closed.
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