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:
Nov. 15, 1994
Filed:
Mar. 25, 1992
Itaru Tamura, Kyoto, JP;
Akira Toyama, Joyo, JP;
Nippon Densan Corporation, Kyoto, JP;
Abstract
A motor eccentricity measuring apparatus is provided comprising a detecting device for detecting a deflection of the rotating shaft of a motor, a first, a second, and a third hold device for holding detected values supplied from the detecting device, and an amplifier device for amplifying a difference between two outputs of the first and the second hold device. In operation, RRO is calculated, during a first measuring period, from the detected values of the first and third hold device and NRRO is calculated, during a second measuring period, from the detected values of the first and second hold device and simultaneously, amplified with the amplifier device.