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. 11, 2000
Filed:
May. 22, 1998
Applicant:
Inventors:
Hiroaki Tanaka, Kobe, JP;
Yoshiyuki Okido, Kobe, JP;
Yutaka Yoshida, Kobe, JP;
Hideki Sano, Kobe, JP;
Hiroaki Matsubara, Kaizuka, JP;
Assignees:
Sumitomo Rubber Industries, Ltd., Kobe, JP;
Mu Instrument Trading Corp., Sakai, JP;
Primary Examiner:
Int. Cl.
CPC ...
G01M / ;
U.S. Cl.
CPC ...
73 6502 ;
Abstract
A spherical object is positioned on a rotation stage, the rotation stage is rotated, and a deviation detector detects whether the spherical object deviates from the rotation stage or not. A rotation frequency of the rotation stage when the object deviates from the rotation stage is detected by a rotation frequency detector, and a judgement system judges whether the object is mass eccentric or not, comparing the detected rotation frequency with a predetermined rotation frequency which is set beforehand.