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:
Feb. 26, 2019
Filed:
Feb. 25, 2016
Applicant:
Topre Corporation, Tokyo, JP;
Inventors:
Kazufumi Enomoto, Kanagawa, JP;
Kenki Enomoto, Kanagawa, JP;
Assignee:
TOPRE CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01H 13/83 (2006.01); H01H 13/02 (2006.01); H01H 13/70 (2006.01); F21V 8/00 (2006.01); H01H 9/18 (2006.01);
U.S. Cl.
CPC ...
H01H 13/83 (2013.01); H01H 13/02 (2013.01); H01H 13/023 (2013.01); H01H 13/70 (2013.01); G02B 6/0016 (2013.01); H01H 9/182 (2013.01);
Abstract
In a keyboard, a keybutton opposes an operation detection portion. A light source is provided on an outer side of the operation detection portion. A light guide member guides light from the light source to a keytop of the keybutton. The light guide member includes an incident portion opposing the light source, an emitting portion opposing the keytop, and a guide portion which guides the light incident from the incident portion to the emitting portion. An incident surface of the incident portion is formed in a shape of a curved surface that protrudes to the light source side.