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. 30, 1997
Filed:
Apr. 21, 1995
Applicant:
Inventor:
Chester G DuBois, Zion, IL (US);
Assignee:
Buehler, Ltd., Lake Bluff, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B24B / ;
U.S. Cl.
CPC ...
451 14 ; 451313 ; 451314 ; 451317 ;
Abstract
An improved mechanism for applying a controlled load to a specimen being polishing in an automatic polishing machine including a tension spring for exerting a downward load which is transmitted to the specimen to press the same against an abrasive polishing member, and a stepper motor connected by a plurality of mechanical elements to one end of the tension spring whereby through use of a microprocessor the stepper motor may be operated to control the load applied to the specimen.