Acoustics – Sound-modifying means – Housing or enclosure
Patent
1985-08-23
1986-12-16
Fuller, Benjamin R.
Acoustics
Sound-modifying means
Housing or enclosure
181202, 181225, F01N 108
Patent
active
046290311
ABSTRACT:
A soundproof engine-operated machine or generator includes a floor having first and second air discharge hole, wall members cooperating with the floor in defining a container, at least one wall member having an air inlet for introducing air into the container, a water-cooled engine disposed in the container, a first cooling fan disposed in front of said engine for delivering air from said air inlet toward said engine to cool the engine, a machine unit such as a generator operable by the water-cooled engine, a radiator attached to the engine, a second cooling fan disposed in front of the radiator for drawing air from behind the radiator therethrough, an exhaust pipe connected to the engine and extending below the floor, a muffler connected to a downstream portion of the exhaust pipe and disposed below the floor, a duct for guiding air from the engine around the exhaust pipe to cool the exhaust pipe and for discharging the air through the first air discharge hole, and a scroll-shaped fan cover for discharging air from the radiator through the second air discharge hole to cool the muffler positioned below the second air discharge hole.
REFERENCES:
patent: 2177687 (1939-10-01), Bracken et al.
patent: 3856439 (1974-12-01), Moehrbach
patent: 3951114 (1976-04-01), Fachbach et al.
Kato Shoichi
Tsukamoto Teisuke
Fuller Benjamin R.
Honda Giken Kogyo Kabushiki Kaisha
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