Reverse flow blocking device for vehicle ventilation system
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United States of America Patent
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-
Nov 23, 1993
Grant Date -
N/A
app pub date -
Jun 24, 1991
filing date -
Jul 20, 1990
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A return air blocking device (1) in the nature of a check valve for use in the ventilation system for the interior of a motor vehicle. The device comprises a housing or main frame (2) attachable in a vehicle support panel by insertion into a panel aperture. A flap-type valve element is directly connected with housing (2). Preferably, housing (2) includes a grating structure against which the flap-type valve element rests while in the closed position.
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Cited Art Landscape
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