Crankshaft assembly with coated crank pin

Details Crankshaft assembly with coated crank pin Crankshaft assembly with coated crank pin

2007-07-13

2008-09-02

Kamen, Noah (Department: 3747)

Internal-combustion engines

Transmission mechanism from piston

Crankshaft and connecting rod

C384S294000, C384S625000

Reexamination Certificate

active

07418939

ABSTRACT:
The invention provides a motorcycle having a frame, an engine coupled to the frame, and a crankshaft assembly. The crankshaft assembly includes a first flywheel half having an aperture, a crank pin including a first end portion, a second end portion opposite the first end portion, and a bearing surface between the first and second end portions. The first end portion is press-fit into the aperture of the first flywheel half. The first end portion, the second end portion, and the bearing surface are coated with a friction enhancer. A bearing is positioned at least partially onto the bearing surface, and a connecting rod has an aperture that at least partially receives the bearing.

REFERENCES:
patent: 4577249 (1986-03-01), Cantwell
patent: 5670265 (1997-09-01), Grell et al.
patent: 6939049 (2005-09-01), Schubert
patent: 2004/0126042 (2004-07-01), Schubert
patent: 19718307 (1998-11-01), None
patent: 63019412 (1988-01-01), None

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