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:
May. 02, 1978
Filed:
Jun. 22, 1977
Applicant:
Inventors:
Min-Chung Jon, Cranbury, NJ (US);
Charles Andrew Keskimaki, Plainsboro, NJ (US);
Sotirios John Vahaviolos, West Windsor Township, Mercer County, NJ (US);
Assignee:
Western Electric Co., Inc., New York, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
73587 ;
Abstract
Signals emanating from a weld are detected during the post weld period and excursions of the detected signal above a predetermined threshold are counted. Simultaneously, an envelope of the signal is developed and excursions thereof above the threshold are also counted. A ratio of the signal excursion count to the envelope excursion count is formed. The ratio so formed is compared to known ranges of ratio values to determine whether the detected signal is mechanical noise or a stress wave emission signal.