Air-cooled engine

Details Air-cooled engine Air-cooled engine

2011-06-28

2011-06-28

Kamen, Noah (Department: 3783)

Internal-combustion engines

Frame construction

Horizontal cylinder

C123S090310, C123S193500

Reexamination Certificate

active

07966987

ABSTRACT:
There is provided an air-cooled engine (10) that is cooled by cooling air. The air-cooled engine (10) comprises a cylinder block (33), and a cylinder head (28) that closes off one end of a cylinder (26). The cylinder head (28) includes a base part (81) that is superposed on and secured to the cylinder block (33) by a plurality of bolts (91), and a valve compartment (83) formed integrally on the base part (81). All of the bolts (91) are disposed near the outer periphery of the base part (81) at positions outside of the valve compartment (83).

REFERENCES:
patent: 4395980 (1983-08-01), Tominaga et al.
patent: 4401067 (1983-08-01), Honda
patent: 27 03 520 (1978-08-01), None
patent: 36 21 478 (1988-01-01), None
patent: 1 403 496 (2004-03-01), None
patent: 1 197 813 (1959-12-01), None
patent: 2-32849 (1990-09-01), None
patent: 3-189359 (1991-08-01), None
Japanese Office Action dated Mar. 3, 2009, issued in corresponding Japanese Patent Application No. 2005-183094.
International Search Report of PCT/JP2006/312551, date of mailing Sep. 21, 2006.

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