Ventilator closure

Details Ventilator closure Ventilator closure

1986-11-17

1988-08-02

Schwartz, Larry I.

98 75, 98119, F24F 702

Patent

active

047607734

ABSTRACT:
A roof ventilator closure assembly for mounting under a roof and including a door which slides within a framework to selectively cover and uncover an opening in the framework positioned in registry with the ventilator opening in the roof. The opening in the framework is covered by screen material to prevent the entry of insects and animals through the ventilator when the framework opening is uncovered by the door.

REFERENCES:
patent: 827603 (1906-07-01), Quette et al.
patent: 842538 (1907-01-01), Elward
patent: 2525371 (1950-10-01), Reynolds
patent: 2936692 (1960-05-01), White
patent: 3830146 (1974-08-01), Kaiser
patent: 4123001 (1978-10-01), Kolt
patent: 4231288 (1980-11-01), Finley
patent: 4287816 (1981-09-01), Riccard
patent: 4374534 (1983-02-01), Jespers et al.
patent: 4505189 (1985-03-01), Morris et al.

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