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:
Jan. 27, 1987
Filed:
May. 07, 1985
Toshimichi Taguchi, Osaka, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
A membrane keyboard containing a larger size key pad label and a smaller size key pad labels; a pair of laminate sheets carry confronting conductor electrodes, each of the conductor electrodes being shaped to exactly follow the corresponding key pad label; and spacer sheet disposed between the pair of laminate sheets for electrically separating the confronting conductor electrodes. The spacer sheet is provided with a plurality of openings formed at positions corresponding to each of the conductor electrodes. The openings corresponding to the larger size key pad labels are divided into at least two sections through the use of, for example, a bridge layer extending across the opening, thereby uniforming the key actuation condition.