Ventilation – Having outlet airway – Having specific cover or shield for exterior vent opening
Patent
1995-04-13
1997-04-01
Joyce, Harold
Ventilation
Having outlet airway
Having specific cover or shield for exterior vent opening
454359, F23L 1702
Patent
active
056160763
ABSTRACT:
A vent guard that keeps birds out. This vent guard is designed with round, smooth bars which do not hold lint from dryers. The bars dropped down lower than the frame design allows wind to keep it clean.
Present materials used to fashion the vent guard are polypropolene and polyethylene, with ultraviolet ray blockers.
REFERENCES:
patent: 2551782 (1951-05-01), Zaske
patent: 3777643 (1973-12-01), Luckey
patent: 4126973 (1978-11-01), Luckey
patent: 4189878 (1980-02-01), Fitzgerald
patent: 4292927 (1981-10-01), Sasmann
patent: 4480534 (1984-11-01), Sloan
patent: 5046408 (1991-09-01), Eugenio
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