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:
Feb. 22, 2005
Filed:
Feb. 12, 2004
Kazuhiro Okada, Ageo, JP;
Nobumitsu Taniguchi, Ageo, JP;
Kazuhiro Okada, Ageo, JP;
Nobumitsu Taniguchi, Ageo, JP;
Wacoh Corporation, Saitama, JP;
Abstract
The invention provides a force detector in which power consumption is suppressed. Four electrodes Ethrough Eare formed on a substrate, and an elastic deformable body formed of a rubber film is disposed thereon. A conductive coating is applied on the lower surface of the elastic deformable body to provide a displacing conductive layer. Four capacitance elements Cthrough Care comprised by the electrodes Ethrough Eand the displacing conductive layeropposed to the electrodes. The capacitance values thereof are converted into voltage values Vthrough Vby C/V converter circuit, and based on operation by signal processing circuit, an external force applied to the elastic deformable body is detected. A pair of contacting electrodes Eand Eare formed on the substrate, and when an external force with a predetermined strength or more is applied, the elastic deformable body deforms, and the displacing conductive layercomes into contact with both electrodes Eand E, simultaneously. The potential of the electrode Eis taken-in from the terminal T, and when said potential is Vcc, the C/V converter circuitis operated in a standby mode with less power consumption, and when said potential is GND, the circuit is operated in a normal mode.