Internal-combustion engines – Frame construction – Horizontal cylinder
Patent
1998-07-27
1999-08-17
Kamen, Noah P.
Internal-combustion engines
Frame construction
Horizontal cylinder
123 4186, 123 65VD, F02F 700
Patent
active
059378166
ABSTRACT:
A combination carburetor backing plate and crankcase breather for a motorcycle engine having at least a pair of cylinders, a cylinder head mounted on each cylinder, and a valve for connecting each cylinder head to the crankcase for venting the same through an exit port in the cylinder head. The combination includes a plate having a first side adapted for mounting to a carburetor and to the cylinder heads, and an opposite, second side adapted for mounting an air cleaner. The plate has a centrally disposed first aperture that coaxially aligns with the carburetor throat, and second and third apertures that align with the exit ports on the cylinder heads. Hollow bolts are provided for insertion through the second and third apertures for threaded attachment to the exit ports, whereby the second and third apertures communicate with the exit ports. The combination further includes a U-shaped core having a C-shaped cross-section attached to the first side of the plate that cooperates with the plate to define a channel that extends from, and communicates with, the second aperture, and extends to, and communicates with, the third aperture. The plate has at least one discharge port adjacent the core. Blow-by gases vented from the crankcase to the exit ports flow through the hollow bolts into the core, through the discharge port and into the air cleaner for recirculation through the engine.
REFERENCES:
patent: 2191940 (1940-02-01), Meckyl
patent: 3073293 (1963-01-01), Barker
patent: 3242915 (1966-03-01), Blacker
patent: 3381673 (1968-05-01), Drysdale
patent: 3677240 (1972-07-01), Sarto
patent: 4011846 (1977-03-01), Gagliardi
patent: 4066055 (1978-01-01), Hager
patent: 4920930 (1990-05-01), Sakano et al.
patent: 5233967 (1993-08-01), Peller
Skagen David George
Wincewicz John Garfield
Benton Jason
Coyne Brian J.
Kamen Noah P.
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