Internal-combustion engines – Transmission mechanism from piston – Crankshaft and connecting rod
Reexamination Certificate
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
Davis William K.
Enright Bernard F.
Janke Jon
Lackas William
Lanser Thomas A.
Harley-Davidson Motor Company Group Inc.
Kamen Noah
Michael & Best & Friedrich LLP
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