Air-cooled engine

Details Air-cooled engine Air-cooled engine

2011-07-19

2011-07-19

Kamen, Noah (Department: 3783)

Internal-combustion engines

Cooling

Air-cooled

C123S041700, C123S090310, C123S193500, C123S1950HC

Reexamination Certificate

active

07980205

ABSTRACT:
An air-cooled engine (10) is cooled by cooling air (Wi). The air-cooled engine (10) includes a cylinder block (33) and a cylinder head (28). The cylinder block (33) has cylinder cooling through-ducts (101, 102) capable of transmitting cooling air (Wi), on the periphery of a cylinder (26). The cylinder head (28) has a head-cooling through-duct (104) capable of transmitting cooling air (Wi). The cylinder-cooling ducts (101, 102) and the head-cooling duct (104) extend in a direction perpendicular to the axial line (109) of the cylinder (26), and are communicated with each other by means of communication channels (105, 105).

REFERENCES:
patent: 3669203 (1972-06-01), Honda
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Japanese Office Action dated Jan. 7, 2010, issued in corresponding Japanese Patent Application No. P2005-182813.
Japanese Office Action dated Jan. 7, 2010, issued in corresponding Japanese Patent Application No. P2005-183166.
International Search Report of PCT/JP2006/312563, date of mailing Dec. 14, 2006.

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