Tent – canopy – umbrella – or cane – Portable shelter – With heating – lighting – or ventilating
Patent
1991-04-03
1993-03-09
Raduazo, Henry E.
Tent, canopy, umbrella, or cane
Portable shelter
With heating, lighting, or ventilating
135 87, 454 63, E04H 1514
Patent
active
051919095
ABSTRACT:
A drive-through dust hood assembly for transit mix trucks is provided by a pair of side curtains that are pivotally mounted on a top closure panel and which cooperate to close about the end of a truck and the mouth of the mixer drum to capture any dust created by filling thereof. The side curtains may be pivoted from the closed positon to an extended position for easy transit mix truck access when not exhausting dust. The side curtains of the closure are made of flexible sheet material that will conform to the irregular size and shape of various style trucks, so that filling dust does not escape to the ambient air. The exhausted dust is captured in a bag house or other suitable filtration facility for reuse or subsequent disposal. Swinging curtain closures are used for the back of the truck to permit efficient closing of the back area while allowing easy pivoting of the curtains should the truck not fully clear the open assembly.
REFERENCES:
patent: 1774072 (1930-08-01), Whitmore
patent: 1906352 (1933-05-01), Whitmore
patent: 2137862 (1938-11-01), Steins
patent: 3766844 (1973-10-01), Donnelly
patent: 4177975 (1979-12-01), Meyers
patent: 4231289 (1980-11-01), Domicent
patent: 4318337 (1982-03-01), Wichmann
Nadeau Ronald P.
Smith, Jr. Frank V.
Griffin Environmental Co., Inc.
Raduazo Henry E.
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