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:
May. 30, 2017
Filed:
Dec. 02, 2014
Siltronic Ag, Munich, DE;
Peter Wiesner, Reut, DE;
Robert Kreuzeder, Wurmannsquick, DE;
SILTRONIC AG, Munich, DE;
Abstract
A method for sawing a multiplicity of wafers from a workpiece by means of a wire web of a wire saw includes providing a wire web consisting of a plurality of parallel wire sections. The wire web is spanned by at least two wire guide rollers where each wire guide rollers comprises a core having two side surfaces and a lateral surface. The core is composed of a first material. Each core is rotatably mounted along its longitudinal axis and comprises at least two separate cavities. The lateral surface of each core is enclosed by a jacket composed of a second material. Parallel groves are cut into the jacket for guiding the wire sections of the web. The length of the jacket is altered thermally by means of at least one cavity being filled with a temperature regulating medium.