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. 08, 1980
Filed:
Oct. 27, 1978
Applicant:
Inventors:
Friedrich Steudten, Burghausen, DE;
Franz Koppl, Altotting, DE;
Assignee:
Wacker-Chemitronic Gesellschaft fur Elektronik-Grundstoffe mbH, Burghausen, DE;
Primary Examiner:
Int. Cl.
CPC ...
B24B / ;
U.S. Cl.
CPC ...
51 42 ; 51 49 ; 51 89 ;
Abstract
The invention provides a process and an apparatus for machining silicon r and tubes by abrasion. The risk of fracture of such workpieces during grinding is prevented in this method and apparatus by the workpiece being held vertically in a cylindrical grinding machine in which the individual tools are uniformly arranged around the circumference of the workpiece in such a manner that their contact pressures are mutually substantially compensated.