Articulated piston
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United States of America Patent
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-
Dec 10, 1991
Grant Date -
N/A
app pub date -
Jul 11, 1989
filing date -
Jul 15, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A two-piece piston composed of independent head and skirt portions, wherein the skirt portion is mounted by means of a wrist pin on bosses located on the lower end of members pending from the head portion, the head portion being provided with an annular recess between the combustion bowl and the ring zone, and the skirt provided with a tray on its upper end, the annular recess and the tray defining a semi-open cooling chamber. With the piston assembled, the lower end of the head portion below the ring zone and the upper end of the skirt portion, which constitutes the outer wall of the tray, define an oil baffle designed to prevent the cooling oil from flowing from the tray toward the space between the piston and the cylinder.
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