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:
Mar. 10, 1992
Filed:
Sep. 26, 1990
Applicant:
Inventors:
Assignee:
Speedfam Company, Ltd., Kanagawa, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B24B / ;
U.S. Cl.
CPC ...
5116577 ; 5128 / ; 5121 / ; 5123 / ; 51327 ;
Abstract
Described herein is an edge polisher for polishing chamfered edge portions on the front and rear sides of work, including a first machining stage for polishing the front side of work and a second machining stage for polishing the rear side of work, along with mechanisms for supplying, positioning, transferring, reversing and ejecting work. In the first and second machining stages, a work is chucked on each of index units which are mounted on an intermittently rotating index table and revolved around a polishing drum located at the center of the index table, pressing chamfered edge portions of the works against the polishing drum to give a polishing treatment thereto.