Exhaust device
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United States of America Patent
Stats
-
Apr 29, 1986
Grant Date -
N/A
app pub date -
Sep 12, 1984
filing date -
Sep 19, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An exhaust device comprising an elongate hood having side walls (3,4). An internal, centrally located deflection casing (10) has two mutually aligned suction openings (8,9) which, in combination with an air-supply device (6) disposed at the bottom of the hood, causes the generation of two axially aligned rotational flow patterns (P2, P'2) in the hood between each side wall (4,3) and the central deflection casing (10), from which polluted air is exhausted (via 11,12).
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