Internal-combustion engines – Cooling – Air-cooled
Reexamination Certificate
2007-07-10
2008-10-07
Cronin, Stephen K. (Department: 3747)
Internal-combustion engines
Cooling
Air-cooled
C290S00100C, C181S204000
Reexamination Certificate
active
07430992
ABSTRACT:
A duct member is disposed around outer peripheries of an engine and an engine-driven generator to define a continuous cooling-air passage between the duct member and the outer peripheries. A cooling fan is disposed in the cooling-air passage to generate a flow of cooling air from one end of the cooling-air passage to the other end during operation of the engine. An intake box is connected to one end of the cooling-air passage and has an air-intake port. A muffler box is connected to the other end of the cooling-air passage, has an air-discharge port, and accommodates an exhaust muffler of the engine. A sound-insulating housing is connected between the intake box and the muffler box to surround the duct member in order to insulate sound emitted from the duct member.
REFERENCES:
patent: 6039009 (2000-03-01), Hirose
patent: 6431126 (2002-08-01), Saito
patent: 6792897 (2004-09-01), Higuchi et al.
patent: 6975042 (2005-12-01), Yamada et al.
patent: 6979912 (2005-12-01), Mazuka et al.
patent: 2007/0108767 (2007-05-01), Hirose et al.
patent: 2007/0176426 (2007-08-01), Hirose et al.
patent: 2005-30353 (2005-02-01), None
Hirose Tadafumi
Murakami Hiroko
Onodera Taiyo
Arent & Fox LLP
Cronin Stephen K.
Honda Motor Co. Ltd.
Hyder Ali
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