Piston for an internal combustion engine and cover ring for...

Details Piston for an internal combustion engine and cover ring for... Piston for an internal combustion engine and cover ring for...

2008-06-17

2008-06-17

McMahon, M. (Department: 3747)

Internal-combustion engines

Particular piston and enclosing cylinder construction

Piston

Reexamination Certificate

active

07387100

ABSTRACT:
A piston for an internal combustion engine has a piston head and a piston skirt spaced apart from the piston head by a ring-shaped recess. The piston has at least one pin bore for accommodating a piston pin. A ring-shaped circumferential cooling channel for a coolant is provided in the piston head, which channel is closed off by a cover ring that consists of at least two segments. At least one region of the cover ring projects at least partially into the clear opening of the at least one pin bore, in such a manner that the cover ring simultaneously forms the retaining element for the piston pin.

REFERENCES:
patent: 1426766 (1922-08-01), Petrie
patent: 5261363 (1993-11-01), Kemnitz
patent: 6892690 (2005-05-01), Gabriel et al.
patent: 2002/0133946 (2002-09-01), Scharp et al.
patent: 2005/0092279 (2005-05-01), Parker et al.
patent: 252 638 (1987-12-01), None
patent: 4 134 530 (1992-05-01), None
patent: 103 46 822.6 (2005-04-01), None
patent: 0 561 817 (1993-09-01), None
patent: 0 799 373 (1997-10-01), None

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