Piston for an internal combustion engine and method for its...

Metal working – Method of mechanical manufacture – Prime mover or fluid pump making

Reexamination Certificate

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C029S888042, C029S888070, C092S172000, C123S041350, C164S349000, C164S364000

Reexamination Certificate

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07921555

ABSTRACT:
A piston for an internal combustion engine has annular cooling passage arranged in the vicinity of the piston crown and radially on the outside, which, in those regions of the pin bosses which lie close to the boss holes, has boss cooling passages which are connected to the cooling passage and are intended for improved cooling of the pin bosses.

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International Search Report, Apr. 13, 2007.

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