Light diffuser and illuminating ceiling display

Details Light diffuser and illuminating ceiling display Light diffuser and illuminating ceiling display

1976-06-28

1978-02-28

Pitrelli, John F.

Card, picture, or sign exhibiting

Illuminated sign

Having multiple function

40559, 362150, G09F 1300

Patent

active

040757757

ABSTRACT:
Light diffuser and illuminating ceiling display fixture for use in combination with a suspended ceiling which is in the form of an integral body of translucent, synthetic plastic sheet material. The integral body is hollow, has an open top and includes an outwardly extending annular rim. The outer dimension of the rim is approximately the same as the distance between upright web portions of adjacent, parallel ceiling title support bars. The rim is severable for supportive engagement with support members of varying spacing and the translucent body is resiliently flexible, enabling substantial deformation for fitting the fixture into an opening defined by a rectangular arrangement of ceiling support bars.

REFERENCES:
patent: 1780373 (1930-11-01), Beuttell
patent: 3352071 (1967-11-01), Sutter
patent: 3355583 (1967-11-01), Sellenraad et al.

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