04160286 is referenced by 21 patents and cites 5 patents.

A transparent hemispherical shield formed of polycarbonate resin protects a light-diffusing lens mounted in an aperture in the door of a conventional streetlight. The shield has an inwardly projecting flange disposed in a diametral plane and defining an aperture of approximately the same size and shape as the door aperture. The shield is attached to the streetlight by resilient return-bent clips having spaced parallel tabs securing the shield flange to the streetlight door.

Title
Luminaire shield
Application Number
5/816451
Publication Number
4160286
Application Date
July 18, 1977
Publication Date
July 3, 1979
Inventor
William H Merritt
Seattle
WA, US
Agent
Ward Brown
Robert W Beach
Assignee
Plastics Engineering & Manufacturing Co
WA, US
IPC
F21V 3/04
F21V 3/02
F21V 13/02
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