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:
Mar. 11, 2003
Filed:
Dec. 05, 2000
Other;
Abstract
An intermediate displacement board ( ) composed of a metal plate is arranged on a printed circuit board ( ) having electrode patterns (E -E ) and then a strain generative body ( ) composed of silicon rubber is arranged on top thereof. Then, the arrangement is fixed to the printed circuit board ( ) with attachments ( ). Depressing a displacement portion ( ) causes a connecting portion ( ) to be deflected and an electrode (F ) to be brought into contact with the electrodes (E , E ) to make them conductive, thereby allowing the pushbutton switch to be turned ON. Depressing further the displacement portion ( ) causes an elastic deformation portion ( ) to be elastically deformed and crushed and the intermediate displacement board ( ) to be pushed downward. The capacitance of capacitors (C -C ), which are constituted by the electrodes (E -E ) and the intermediate displacement board ( ), are varied according to the depression of the intermediate displacement board ( ). By detecting the variation in capacitance, it becomes possible to detect three-dimensional components of an applied force.