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:
Dec. 13, 1988
Filed:
Apr. 29, 1987
Applicant:
Inventor:
Thomas D Walser, Chesaning, MI (US);
Assignee:
Raycon Textron Inc., Ann Arbor, MI (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B23H / ;
U.S. Cl.
CPC ...
219 / ;
Abstract
A wire guide directs a wire electrode from a refeed mechanism in an electrical discharge machine EDM to a workpiece. The wire guide has a tension cap and a fixed wire guide body ceramic insert defining a precision guide slot for the electrode and wherein the tension cap is biased by a flex ring mounted on separated ends of the tension cap and body to retain them together. The biased tension cap has tapered surfaces at its exit end which produce a compound tension force on the electrode for maintaining a low friction force thereon during the life of the wire guide.