F - Mech Eng,Light,Heat,Weapons – 24 – F
Patent
F - Mech Eng,Light,Heat,Weapons
24
F
98/29
F24F 13/08 (2006.01) F16J 3/06 (2006.01) F24F 11/04 (2006.01) F24F 13/10 (2006.01)
Patent
CA 1288272
Abstract of the Disclosure A bellows assembly is secured to a retainer by extrusions having a mushroom or arrow shaped cross section. Air flowing through the terminal impinges upon an impervious film coving the central portion of the device and is diverted into two flow paths. Initially the flow paths extend between the film and the cutoff plates which coact to form a tight shut off. Downstream of the cutoff plates, the flow paths are between a porous foam covering the bellows and foam surrounding the cutoff plates to provide a sound reducing effect. If neces- sary or desirable, the back of the retainer may be covered with foam or other suitable sound insulating material.
575335
Currier Frederick A.
Herb Carl C.
Inglis Stephen C.
Carrier Corporation
Gowling Lafleur Henderson Llp
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