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. 20, 2016
Filed:
Jul. 22, 2013
Mitsumi Electric Co., Ltd., Tokyo, JP;
Kenichi Furukawa, Sagamihara, JP;
Takayuki Numakunai, Tama, JP;
MITSUMI ELECTRIC CO., LTD., Tokyo, JP;
Abstract
A power generating element includes a magnetostrictive rod through which lines of magnetic force pass in an axial direction thereof, the magnetostrictive rod formed of a magnetostrictive material; a magnetic rod arranged in parallel with the magnetostrictive rod, the magnetic rod formed of a magnetic material; a first coupling mechanism for coupling one end portion of the magnetostrictive rod and one end of the magnetic rod; a second coupling mechanism for coupling the other end portion of the magnetostrictive rod and the other end portion of the magnetic rod; and a coil provided so that the lines of magnetic force pass inside the coil in an axial direction thereof and in which a voltage is generated on the basis of a variation of density of the lines of magnetic force caused when the magnetostrictive rod is expanded or contracted. Further, at least one of the one end portion and the other end portion of the magnetostrictive rod is formed into a male screw portion.