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:
Nov. 22, 1983
Filed:
Aug. 24, 1981
Applicant:
Inventors:
Douglas L Lumbra, St. Albans, VT (US);
Douglas W Phelps, Jr, Burlington, VT (US);
Sigvart J Samuelsen, Burlington, VT (US);
William C Ward, Burlington, VT (US);
Assignee:
International Business Machines Corporation, Armonk, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B23K / ; B23K / ;
U.S. Cl.
CPC ...
219 96 ; 219 95 ; 219 98 ; 219 99 ; 21913001 ;
Abstract
A method and apparatus for improved percussive arc welding is disclosed. In this technique a test arc of a voltage no greater than the initiating voltage of the percussive arc welding is first applied across the pieces to be welded. The welding cycle is then performed if, and only if, an arc is detected responsive to the impressing of the test voltage.
Lumbra, Douglas. (1983). Percussive arc welding (U.S. Patent No. 4417120). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4417120
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile