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:
Jul. 24, 1990
Filed:
Jun. 15, 1988
Masaki Sugimoto, Yokosuka, JP;
Kunihiko Morikawa, Fujisawa, JP;
Nobuteru Hitomi, Yokohama, JP;
Kenji Ikeura, Zushi, JP;
Hisashi Kitahara, Yokosuka, JP;
Hiroyuki Hirano, Fujisawa, JP;
Kazuhiro Takatori, Yokosuka, JP;
Nissan Motor Co., Ltd., Yokohama, JP;
Abstract
First and second sets of grooves define first and second sets of elongate projections which are respectively subject to compression and elongation when the shaft in which they are defined, is subject to torque. Two yoked coils which are excited with an alternating current, are each disposed close to a set of projections. The compression and elongation of the projections changes the amount of magnetic flux which flows along the projections and therefore the inductance of the coils. The coils form part of a bridge circuit which is sensitive to the change in inductance in a manner which enables the amount of torque to be measured.