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. 15, 2014
Filed:
Feb. 07, 2012
Akihiko Takemae, Shinagawa, JP;
Norio Endo, Shinagawa, JP;
Shuji Nakamura, Shinagawa, JP;
Tamotsu Koike, Shinagawa, JP;
Takeshi Nishino, Shinagawa, JP;
Akihiko Takemae, Shinagawa, JP;
Norio Endo, Shinagawa, JP;
Shuji Nakamura, Shinagawa, JP;
Tamotsu Koike, Shinagawa, JP;
Takeshi Nishino, Shinagawa, JP;
Fujitsu Component Limited, Tokyo, JP;
Abstract
A key switch device including a key top; a pair of link members connected to the key top and interlocked with each other to guide a vertical motion of the key top; a switch mechanism including a membrane sheet switch capable of opening and closing a contact section of an electrical circuit in accordance with the vertical motion of the key top; a flexible thin film sheet attached to the membrane sheet switch; and a housing attached to the thin film sheet, the housing adapted to connect the link members to the thin film sheet.