Light diffuser for luminaire as shown and described

Description

FIG. 1 is a bottom plan view of a light diffuser for a luminaire showing our new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a side elevational view thereof;

FIG. 4 is an enlarged fragmentary cross sectional view through a luminaire light diffuser as taken along line 4--4 of FIG. 1;

FIG. 5 is a greatly enlarged fragmentary cross sectional view through a luminaire light diffuser taken along line 5--5 of FIG. 4;

FIG. 6 is a greatly enlarged fragmentary cross sectional view of a luminaire light diffuser taken along line 6--6 of FIG. 4;

FIG. 7 is a greatly enlarged fragmentary cross sectional view of a luminaire light diffuser taken along line 7--7 of FIG. 4;

FIG. 8 is a greatly enlarged fragmentary cross sectional view of a luminaire light diffuser taken along line 8--8 of FIG. 4;

FIG. 9 is a greatly enlarged fragmentary cross sectional view of a luminaire light diffuser taken along line 9--9 of FIG. 8; and

FIG. 10 is a greatly enlarged view of a portion of the faceting on the bottom or exterior surface of the diffuser skirt.

The faceting on the diffuser is partially shown in FIGS. 1, 2 and 3 for convenience of illustration, it being understood that the faceting is continuous around the areas on which it is partially shown.

Referenced Cited
U.S. Patent Documents
D116943 October 1939 Cleary
D229090 November 1973 Anderson
3766375 October 1973 Edman
Patent History
Patent number: D254693
Type: Grant
Filed: Dec 2, 1977
Date of Patent: Apr 8, 1980
Assignee: National Service Industries, Inc. (Atlanta, GA)
Inventors: Theodor G. Yahraus (Crawfordsville, IN), Russell C. Dahl (Crawfordsville, IN)
Primary Examiner: Susan J. Lucas
Attorney: Vincent L. Barker, Jr.
Application Number: 5/857,273
Classifications
Current U.S. Class: Circular Or Oval (20) (D26/123)
International Classification: D2605;