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. 18, 2014
Filed:
Mar. 24, 2010
Yuichiro Yamaguchi, Sakura, JP;
Takuya Osaki, Sakura, JP;
Yuki Noguchi, Sakura, JP;
Fujikura Ltd., Tokyo, JP;
Abstract
A headrest position adjusting deviceincludes a distance measuring deviceand a drive motor unit, and the distance measuring deviceincludes a plurality of sensing electrodestoand a detecting circuit. The detecting circuitincludes a plurality of capacitance sensing circuitstoconnected one-to-one to the sensing electrodestoand an arithmetic processing circuit, and the drive motor unitincludes a motor driving circuit and a drive motor. Based on the detected capacitance values, the detecting circuitcalculates a distance calculation angle θ formed by points representing the positions and output values of the sensing electrodesandlocated at the highest and lowest positions and a point representing the position and output value of the largest output value, and thereby measures an electrode-head distance L. A position adjusting operation for a headrestis performed based on the measurement result.