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:
Oct. 19, 1976
Filed:
Sep. 22, 1975
Sotirios John Vahaviolos, East Windsor Township, Mercer County, NJ (US);
Western Electric Company, Inc., New York, NY (US);
Abstract
Continuous welds are monitored by detecting and processing stress-wave signals emitted from the moving weld area to provide an indication of both the weld energy supplied to the weld area by the welding apparatus, and the development of microcracks in the cooling weld area. According to the present invention, the detected stress-wave signals emitted from the weld area are amplified and filtered to provide excellent signal-to-noise ratios and then applied to either one, or both, of (a) an RMS voltmeter, and (b) a spectrum analyzer to provide an indication of the weld energy supplied to the weld area and the development of cracks in the cooling weld area.