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. 11, 1986
Filed:
Nov. 28, 1983
Applicant:
Inventor:
John J Rozmus, Berwyn, PA (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B23K / ;
U.S. Cl.
CPC ...
219 83 ; 219 5622 ;
Abstract
In the manufacture of electrical spring contacts each having a gold-plated contact element welded thereto, a method of providing such a contact element by welding a gold-plated surface strip to a body strip with a pair of welding electrodes in the form of rollers located between the punch and die pad bolsters of a progressive die to effect one or more welds between the strips during the interval the punch pad bolster is in its return stroke mode whereby the subsequent punching out of the finished contacts can be done without disturbing the welds and each such welded part of the surface strip constitutes the gold-plated contact element.