Light diffuser for luminaire as shown and described
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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.
D116943 | October 1939 | Cleary |
D229090 | November 1973 | Anderson |
3766375 | October 1973 | Edman |
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