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:
Dec. 31, 1996
Filed:
Jun. 23, 1995
Shinji Saitou, Suita, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A mechanical sensor, comprising a ferromagnetic layer having magnetostriction, a ferromagnetic layer having magneto-resistance effect, a magnetic field generating means which excites these ferromagnetic layers, and a substrate which supports all these elements integrally, can be attained, which is small, thin, highly sensitive, and is capable of integration, by detecting a change of magnetic flux density passing through the ferromagnetic layers resulting from a change of magnetic properties caused by stress as a change of resistance value arising from magneto-resistance effect. As a result, a small, thin, and highly sensitive mechanical sensor can be provided using stress magnetic effect. Furthermore, based on the anisotropy of detection sensitivity, intensity of the stress along a certain direction can be detected selectively.