Cover for a ceiling aperture

Details Cover for a ceiling aperture Cover for a ceiling aperture

1997-11-21

1999-11-02

Look, Edward K.

Fluid reaction surfaces (i.e., impellers)

Support mounting, carrier or fairing structure

416 5, 248343, B42F 1300

Patent

active

059758538

ABSTRACT:
A cover for an aperture in a ceiling having a shell and a back panel. The shell includes: a wall; an interior portion; and an exterior portion. The interior portion has a tubular hub extending from the wall; fins extending from the wall and from the hub; and blocks extending from the wall. The hub has a central aperture and a distal end with a flange. The exterior portion has a recess cooperating with the hub on the interior portion. The back panel is nestable within the interior portion of the shell. The back panel has an aperture cooperating with the hub on the shell when the back panel nests within the interior portion of the shell. In such an arrangement, the back panel sits on upper surfaces of the fins and blocks. In order to attach to the ceiling, either the recess on the interior portion of the shell or the recess on the exterior portion of the shell is positioned between the mounting plate and the junction box.

REFERENCES:
patent: D256614 (1980-08-01), Hoyt
patent: D262570 (1982-01-01), Lock
patent: D263499 (1982-03-01), Markowitz
patent: D267195 (1982-12-01), Gomes
patent: D267196 (1982-12-01), Gomes
patent: D271330 (1983-11-01), Yung
patent: 2119398 (1938-05-01), Morse
patent: 3930631 (1976-01-01), Laarm
patent: 5349513 (1994-09-01), Taylor, III
patent: 5613832 (1997-03-01), Su

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