Patent ID: 6135875
Filing Date: 2000-10-24
Classification: F04D,H02B,H05K

Abstract:
A cabinet, comprising:a compartment disposed in an interior of the cabinet, such interior being configured to house electrical components, such cabinet having an aperture passing through a surface thereof;a fan mounted to the surface of the cabinet over the aperture in the cabinet, such fan being adapted to produce a flow of air through the interior of the cabinet when operating properly to exhaust such flow of air externally of the cabinet;a resilient membrane mounted to said surface of said cabinet over such fan, such resilient membrane having formed therein:a plurality of slits extending radially from a center of a region of the membrane, such slits being spaced about the periphery of the aperture to form a plurality of flaps about the periphery of the region, such flaps being formed to pivot from a nominal position outwardly externally from the surface of the cabinet from the flow of air produced by the fan when the fan is operating properly and to return to the nominal position when the fan is operating improperly to inhibit air externally of the cabinet from entering into the interior.