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:
Aug. 21, 2012
Filed:
Apr. 08, 2010
Hiroyuki Ominato, Nagoya, JP;
Hiroyuki Ominato, Nagoya, JP;
Brother Kogyo Kabushiki Kaisha, Nagoya, JP;
Abstract
A push button switch device includes a push button disposed on a cover constituting an outer surface of an equipment body and light-transmissible, a switching element behind the push button so that its operation axis substantially corresponds with a central axis of the push button, light sources around the switching element to illuminate the push button and operated by the push button, and an incidence surface on a rear surface of the push button so that light from the light sources is incident on it and including a concave curved surface located so as to face the light sources and a convex curved surface located outside and continuous to the concave curved surface. The push button has a recess in a central rear surface so as to be located inside the incidence surface and a light scattering surface on an inner surface of the recess so as to scatter light.