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:
Jun. 05, 2012
Filed:
Apr. 20, 2010
Kotaro Mae, Tokyo, JP;
Hisashi Matsuhashi, Tokyo, JP;
Kotaro Mae, Tokyo, JP;
Hisashi Matsuhashi, Tokyo, JP;
Niles Co., Ltd., Tokyo, JP;
Abstract
A switch includes push knobs and a lens for guiding light from the light source on the pc board to illuminate the push knobs for changing the distance between the incident surface of the lens and the light source by moving the lens by operating the push knobs. The lens has a recess groove intersecting the light path of the incident light to the lens. The pc board has a protruding wall protruding toward the lens at a position corresponding to the recess groove. Upon movement of the lens directed to reduce the distance between the incident surface and the light source, the protruding wall is inserted into the recess groove by an amount corresponding to the lens displacement to shield the light path in accordance with the displacement. Light amount for illuminating the push knobs is kept constant irrespective of the lens movement.