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:
Sep. 05, 1989
Filed:
Oct. 06, 1987
Hisashi Minami, Kaizuka, JP;
Toshihisa Deguchi, Nara, JP;
Masaru Nomura, Tenri, JP;
Takao Hyuga, Kyoto, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
An extra magnetic field positioning apparatus includes a motor which does not have stable points for defining the extra magnetic field. An encoder is provided which is rotated with the motor and individually has the information which indicates rotating displacement and the information which indicates rotating position. Further, a sensor detects the information indicating the rotating position recorded on the encoder, and another sensor detects the information indicating the rotating displacement recorded on the encoder.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile