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, 1984
Filed:
Feb. 24, 1982
Applicant:
Inventor:
Kazuyasu Motoyama, Tokyo, JP;
Assignee:
Olympus Optical Company Limited, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02K / ;
U.S. Cl.
CPC ...
310268 ; 310156 ; 360 73 ;
Abstract
A rotary machine having a rotating detection mechanism for detecting rotational speeds as a frequency signal is disclosed. The rotary machine comprises a rotary machine body, a disk shaped magnet tightly fitted onto a rotating shaft projected from the body, a ring shaped coil unit loosely mounted around the disk magnet for generating a frequency output corresponding to rotational speeds of the body, and a ring shaped member supporting the ring coil unit around the disk magnet.
Motoyama, Kazuyasu. (1984). Support for a rotational speed detecting mechanism on a flat motor (U.S. Patent No. 4461967). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4461967
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