Ventilation – Having outlet airway – With air pump
Patent
1990-10-30
1992-06-23
Joyce, Harold
Ventilation
Having outlet airway
With air pump
454348, 454349, F24F 1320
Patent
active
051238764
ABSTRACT:
An energy saving cover for use in a building having an opening in a ceiling with an attic fan thereabove, the building having a voltage source, the cover including a horizontal frame attachable to the ceiling below the attic fan opening, a cover panel slidable within the frame between a closed position in which the attic fan is fully covered to substantially reduce the passage of air therethrough and an open position in which the attic fan opening is fully opened, and a switch supported to the frame having an "on" and "off" condition and positioned such that the switch is actuated to the "on" position when the cover is in the fully opened position, the switch being in series with the attic fan motor so that the attic fan motor can be energized only when the cover is in the fully opened position. In a preferred embodiment wherein the building in which the cover is used has an electrically operated heating source, the energy saving cover employs a second switch mounted to the frame and positioned such that the second switch is "on" when the cover is in the fully closed position, the second switch being in series with the heating system whereby the heating system can be actuated only when the cover is in the fully closed position.
REFERENCES:
patent: 2096503 (1937-10-01), Allread
patent: 3125371 (1964-03-01), Krueger
patent: 3130719 (1964-04-01), Mayer et al.
patent: 3196814 (1965-07-01), Hahn et al.
patent: 3524399 (1970-08-01), Bohanon
patent: 3669041 (1972-06-01), Schworer
patent: 4047475 (1977-09-01), Cox
patent: 4304071 (1981-12-01), Obrecht
patent: 4760773 (1988-08-01), Pezzulli
patent: 4945822 (1990-08-01), Hicks et al.
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