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:
Aug. 25, 2015
Filed:
Nov. 29, 2011
Eiji Sato, Kobe, JP;
Satoaki Ichi, Akashi, JP;
Eiji Sato, Kobe, JP;
Satoaki Ichi, Akashi, JP;
Kawasaki Jukogyo Kabushiki Kaisha, Kobe-shi, JP;
Abstract
A reference angle detecting device includes a control shaft connected to a controlled object, an electric motor causing the control shaft to rotate via a worm gear mechanism, a stopper disposed on a motion track of a worm wheel, an angle sensor that can detect a rotation angle of the control shaft, and a controller. The stopper includes a spring member which is elastically deformable in an operation direction of the worm wheel. The controller drives the electric motor to operate so that the worm wheel may face the stopper, and stores the rotation angle at a time point when a change rate ω of the rotation angle θ detected by the angle sensor changes to a value less than a predetermined threshold ωas a reference angle θ. Therefore, the reference angle can be detected with high accuracy for control of an angle of the control shaft.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile