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:
Oct. 06, 1998
Filed:
Aug. 27, 1996
Kenjiro Soejima, Tokyo, JP;
Hitoshi Manta, Tokyo, JP;
Koyo Electronics Industries Co., Ltd, Tokyo, JP;
Abstract
This invention is a bicycle torque detection apparatus for a bicycle having a pair of cranks each having a pedal, and a rotating shaft supporting the cranks to allow a user to step on the pedal to turn the cranks and drive a gear engaged with a chain. It comprises a detection section or rotating shaft consisting of magnetic alloy having magnetic anisotropy, the permeability of said detection section or rotating shaft being changed by torsional stress caused by the rotation of the cranks, and a coil unit disposed on the outer circumference of the detection section or rotating shaft to detect a change in the permeability of the detection section or rotating shaft.