The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 15, 1994
Filed:
Nov. 23, 1992
Robert P Helstern, Costa Mesa, CA (US);
Vanacan Tatavossian, Mission Viejo, CA (US);
Eaton Corporation, Cleveland, OH (US);
Abstract
An improved display system includes a prism having a pair of light receiving faces which intersect at an apex. The prism has a light emitting face from which light transmitted. The light emitting face of the prism has a series of parallel linear V-shaped grooves with side surfaces which intersect to form a series of parallel linear ridges which disperse rays of light. A display panel is disposed adjacent to the prism and has a rear side with indicia thereon. The indicia can be read from a front side of the display panel, even in bright sunlight, when a pair of light sources are energized. However, when the light sources are not energized, the indicia on the display panel cannot be observed. A divider panel separates the light sources to enable an observer to determine when one of the light sources is burned out. Reflectors direct light from the light sources toward the light receiving faces of the prism.