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:
Jun. 22, 1993
Filed:
Jan. 09, 1991
Hidetoshi Saito, Itami, JP;
Masahiro Kume, Itami, JP;
Sumitomo Electric Industries, Ltd., Osaka, JP;
Abstract
An acceleration detector has a case and a movable magnetic body mounted in the case and supported by a leaf spring secured to the case. The magnetic body is thus movable in either of two opposite directions in response to acceleration. Stoppers made of a magnetic material protrude from an inner surface of the case to locations adjacent both ends of the magenetic body, with predetermined gaps left therebetween. Two pairs of primary and secondary coils are provided around the magnetic body for producing a difference in induced voltages output by the secondary coils according to the displacement of the magnetic body. A yoke made of soft magnetic material extends from the case to location adjacent the magnetic body.