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. 20, 2005
Filed:
Mar. 01, 2002
Chun-hung Lin, I-Lan, TW;
Chen-der Tsai, Hsinchu, TW;
Hann-tsong Wang, Hsinchu, TW;
Jiun-hung Chen, TaiChung, TW;
De-chang Lin, Taipei, TW;
Chun-Hung Lin, I-Lan, TW;
Chen-Der Tsai, Hsinchu, TW;
Hann-Tsong Wang, Hsinchu, TW;
Jiun-Hung Chen, TaiChung, TW;
De-Chang Lin, Taipei, TW;
Industrial Technology Research Institute, Hsinchu, TW;
Abstract
The present invention is an electropolishing/grinding device for an inner surface of a long tube, including at least one long tube, one electrode, at least two partitions, one fixed magnet mechanism, one driving apparatus and an axial driven mechanism. The fixed magnet mechanism and the driving apparatus form a magnetic levitation effect, which uses magnetic repulsiveness and magnetic attraction to keep the partitions away from the inner surface and avoid an eccentric situation. One of the two partitions has a plurality of springs, a plurality of protruding objects and a plurality of abrasive devices interconnected and firmly touching the inner surface of the tube for grinding.