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:
Dec. 22, 2015
Filed:
May. 15, 2013
Hui-hu Liang, Sioushuei Township, Changhua County, TW;
Hui-Hu Liang, Sioushuei Township, Changhua County, TW;
Other;
Abstract
A circuit switch for a keyboard is formed of a first plate and a second plate. A first sensitive portion and a second sensitive portion are mounted on a surface of the first plate, superposed on each other, and electrically insulated against each other. A first conductive wire is located on the first plate and electrically connected with the first sensitive portion. A conductive portion is located on the second plate. The second plate is parallel to the first plate in arrangement. The conductive portion corresponds to the second sensitive portion in a way that an interval is located therebetween. A second conductive wire is located on the second plate and electrically connected with the conductive portion. A grounded circuit is located between the first and second plates and spaced from the second sensitive portion. The grounded circuit partially overlaps or crosses the first or second conductive wire.