Air vent cover

Details Air vent cover Air vent cover

1983-08-15

1985-03-05

Joyce, Harold

Supports

Pipe or cable

Extending through plate

98119, 248 271, 2482232, 292300, F24F 700

Patent

active

045023689

ABSTRACT:
A cover for an air vent opening in a building comprising a generally rectangular housing portion have a central panel, side and end walls, and provided with a mounting peripheral flange formed by side and end flanges extending in a plane substantially parallel with the plane of the central panel portion of the vent enclosure part of the cover. The end flanges are provided with keyways having round portions and narrower slot portions through the end flanges along a latching surface in each of the flanges which is an inclined plane providing a flange thickness greater along the slotted than along the round portions of the keyways. The cover is held in place by screws fitting through the keyways and wedged with the latch surfaces on the end flanges of the cover by moving the cover laterally.

REFERENCES:
patent: 2380782 (1945-07-01), Owens
patent: 2802410 (1957-08-01), Robinson
patent: 2834278 (1958-05-01), Crute, Jr.
patent: 3130659 (1964-04-01), Compton et al.
patent: 4026082 (1977-05-01), Crofoot

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