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:
Apr. 18, 2000
Filed:
Apr. 07, 1998
Karl Egglhuber, Hebertsfelden, DE;
Wacker Siltronic Gesellschaft Fur Halbleitermaterialien AG, Burghausen, DE;
Abstract
A wire saw for cutting wafers from a workpiece, has a cutting head in which at least two adjacent wire-guiding rollers are mounted rotatably in each case between a moveable bearing and a fixed bearing. These are adjacent wire-guiding rollers, together with a wire wound around them, form a wire web. Each wire-guiding roller and the moveable bearing and fixed bearing assigned to it form a wire-guiding-roller unit, which can only be removed from the cutting head as an entire unit. There is also a repair station and a maintenance and testing station for the wire-guiding-roller unit and a method of exchanging the wire-guiding-roller unit.