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. 27, 2007
Filed:
Sep. 12, 2005
Akira Yamamoto, Nara, JP;
Yasuo Sugimori, Mie, JP;
Akira Yamamoto, Nara, JP;
Yasuo Sugimori, Mie, JP;
Hosiden Corporation, Osaka, JP;
Abstract
A three-axis acceleration sensor having a simple construction is provided for improving shock resistance without lowering sensor sensitivity. An acceleration sensor for detecting acceleration in three orthogonal directions comprises an electrode substrate pair including electrode substrates () opposed to each other, and each having fixed electrodes () corresponding to three axes, respectively, a diaphragm () acting as a movable electrode, and an umbrella-like weight () mounted centrally of the diaphragm (). Acceleration is detected based on variations in capacitance between the fixed electrodes () and diaphragm (). Each electrode substrate () has an electret layer () formed to cover surfaces of the fixed electrodes (). At least one of the electrode substrates defines, centrally thereof, a through hole (). A shaft portion of the umbrella-like weight () extends through the through hole () from outside, and is connected to the diaphragm ().