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. 14, 1978
Filed:
Nov. 01, 1976
Vernon Boyd, Cambridge, EN;
Keith I Johnson, Cambridge, EN;
Malcolm D Hannah, Cambridge, EN;
Timothy J Jessop, Haverhill, EN;
The Welding Institute, Cambridge, EN;
Abstract
A method of controlling the duration of a resistance weld in which a preprogrammed AC current is fed to welding electrodes, the program including an abrupt increase in welding current after a predetermined number of cycles so that the weld duration can be extended into the high amplitude portion if the heat input has been insufficient. The voltage across the welding electrodes is monitored, the peak voltage detected, a reference voltage derived by dropping the peak voltage 2 - 20% and the weld terminated when the subsequent peaks fall to the reference voltage.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile