Composite piston for an internal combustion engine

Details Composite piston for an internal combustion engine Composite piston for an internal combustion engine

2005-06-17

2008-12-16

Kamen, Noah (Department: 3747)

Internal-combustion engines

Particular piston and enclosing cylinder construction

Piston

C123S193100

Reexamination Certificate

active

07464684

ABSTRACT:
The invention relates to an assembled piston (1) for an internal combustion engine, said piston consisting of an upper part (4) and a lower part (5) that are interconnected by means of an internal hexagon screw (6) consisting of an upper half(37) and a lower half (38). The upper half (37) of the internal hexagon screw (6) comprises an external thread (39) which is parallel to the external thread (40) of the lower screw half (38) and has a larger lead angle than the same (40). The lead angle resulting from the difference between the lead angles of the two external threads (39, 40) is very small and contributes to a high strength of the screw connection.

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patent: WO 94/28297 (1994-12-01), None
patent: WO 00/53913 (2000-09-01), None
International Search Report.

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