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. 22, 1982
Filed:
Jan. 16, 1981
Mamoru Koike, Nara, JP;
Shigeki Komaki, Yamatokoriyama, JP;
Tomohiro Inoue, Yoshino, JP;
Akira Tanimoto, Kashihara, JP;
Yoshisaburo Yoshida, Yaita, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
A substantially thin keyboard for use in credit card sized clock calculators or the like includes a rigid plate carrying a plurality of stationary key contacts, a flexible member integral with a plurality of electrically conductive rubber movable contacts and a keyboard surface member, all of which are stacked in the named order. An indicia sheet is interposed between the flexible member and the keyboard surface member, which carries a plurality of groups of key indicia or markings. A slide switch is movably attached so as to shift the key indicia carried on the sheet in relation to the plurality of the stationary key contacts group by group. Masking members are secured on part of the keyboard surface member to conceal all the groups of the key indicia from view other than one group of the key indicia is presented in register with the stationary key contacts.