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:
Mar. 22, 1988
Filed:
Nov. 24, 1986
Applicant:
Inventor:
Roger Girardin, Vernier, CH;
Assignee:
Charmilles Technologies S.A., Geneva, CH;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B23H / ; H01R / ;
U.S. Cl.
CPC ...
219 / ; 21913761 ; 439-5 ;
Abstract
A contact device for an electrical current supply of an electrode wire operating in an electro-erosion machine having an electrical conducting part, mounted in free rotation and solidly attached to a shaft extending perpendicularly to the plane of rotation. The shaft is, preferably, also conducting and extends through a leakproof cavity, containing a conductive fluid, such as mercury for example. The conducting part is preferably a steel roller, provided either with a V-shaped groove on its periphery, or animated with a back and forth movement parallel at its axis of rotation.