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. 08, 1994
Filed:
Dec. 08, 1992
Applicant:
Inventors:
Norman E Farb, Villa Park, CA (US);
James Chon, Pomona, CA (US);
Assignee:
Printronix, Inc., Irvine, CA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B41J / ;
U.S. Cl.
CPC ...
101 9304 ; 40012432 ; 219 7801 ;
Abstract
A process and apparatus for welding a tungsten carbide printing tip of a dot matrix printer to a hammerspring by holding the hammerspring in a fixture with a first electrode in adjacent relationship thereto and a second electrode in adjacent relationship to a tungsten carbide printing tip having cobalt and forcing said tungsten carbide printing tip into adjacent relationship with said hammerspring while causing cobalt in said tungsten carbide printing tip to be welded to said hammerspring through a welding current between said first and second electrodes.