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.:

US 8985830 B1

PDF
Full Text
Expired
Date of Patent:
Mar. 24, 2015

Filed:

Mar. 15, 2013
Applicant:

Kabushiki Kaisha Kawai Gakki Seisakusho, Hamamatsu, Shizuoka-ken, JP;

Inventor:

Kenji Kamada, Hamamatsu, JP;

Assignee:

Kabushiki Kaisha Kawai Gakki Seisakusho, Hamamatsu-shi, Shizuoka-ken, JP;

Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
F21V 8/00 (2006.01); H05B 37/02 (2006.01);
U.S. Cl.
CPC ...
G02B 6/0018 (2013.01); H05B 37/0227 (2013.01);
Abstract

A switch according to the present invention includes: a substrate; a touch sensor; a light guide plate; a light emitting unit; and a control unit. The light guide plate has a surrounding side surface chamfered so that a light entering into the surrounding side surface of the light guide plate diffusely reflects inside the light guide plate. The light emitting unit is arranged at a position facing the surrounding side surface of the light guide plate. The light emitting unit is configured to emit the light to the surrounding side surface of the light guide plate.


Find Patent Forward Citations

Kamada, Kenji. (2015). Switch, keyboard instrument provided with the same, and light emission control circut (U.S. Patent No. 8985830). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8985830

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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