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:
Jul. 07, 1992
Filed:
Jun. 03, 1991
Applicant:
Inventor:
Yoshio Kenmochi, Ichihara, JP;
Assignee:
Sunarrow Co., Inc., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F21V / ;
U.S. Cl.
CPC ...
362 95 ; 362 31 ; 362 27 ; 200314 ; 200D / ;
Abstract
A laniform illumination plate comprising light emitters at one side thereof to irradiate the display section of the necessary keys with uniform illumination, a light-transmitting thin plate which has total reflection inside the plate thickness, the light emitters located in predetermined intervals, with sloped or curved concave reflecting sections formed on the bottom surface of the thin plate corresponding to the location of the keys, or strip shaped concave reflecting sections which run across the width of the thin plate, whereby the light is directed to the corresponding keys on the top surface of the thin plate.