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:
Sep. 19, 1995
Filed:
Oct. 19, 1993
Shinji Saito, Suita, JP;
Hiroyuki Hase, Kyoto, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A mechanical sensor is provided, which includes: a magnetic layer having permeability which is changed in accordance with stress generated therein; a coil having at least two terminals, allowing an electric current to flow therebetween to generate a magnetic flux, thereby magnetizing the magnetic layer; and a substrate integrally supporting the magnetic layer and the coil, wherein the coil is a planar coil including at least one winding, each winding having a U-shaped portion formed of a first conductive line portion, a second conductive line portion, and a connecting portion connecting the first and second conductive line portions, the first and second conductive line portions extending in a first direction, and impedance between the terminals is changed in accordance with a change of inductance caused by a change of the permeability of the magnetic layer.