Insulated closures for attic fans, and seals therefor

Details Insulated closures for attic fans, and seals therefor Insulated closures for attic fans, and seals therefor

1974-11-22

1976-06-22

O'Dea, William F.

Rotary kinetic fluid motors or pumps

Working fluid passage or distributing means associated with...

Plural distributing means immediately upstream of runner

49 92, 98121A, 415125, F04D 2508, F04D 2514

Patent

active

039643778

ABSTRACT:
Insulated closures for attic fans, and the like, one modification of the apparatus having an insulated panel which is removably disposed to cover the attic fan opening, and another modification having insulated tiltable dampers. Complete edge seals for each modification are provided.

REFERENCES:
patent: 1424410 (1922-08-01), Hopewell
patent: 2034231 (1936-03-01), Fox
patent: 2314003 (1943-03-01), Mader
patent: 2571374 (1951-10-01), Mayr
patent: 2579395 (1951-12-01), Pfautsch
patent: 2580797 (1952-01-01), Koch
patent: 2673514 (1954-03-01), Hanks
patent: 3081502 (1963-03-01), Hauck
patent: 3123098 (1964-03-01), Bishop
patent: 3583171 (1971-06-01), Flynn et al.

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