Method of forming a brazed seam

• US 3,302,281 A
• Filed: 07/29/1964
• Issued: 02/07/1967
• Est. Priority Date: 07/29/1964
• Status: Expired due to Term

• Current Assignee: ITT Corporation (ITT, Inc.)
• Original Assignee: Paul J. Spangler, Richard B. Freeman
• Inventors: Freeman, Richard B., Spangler, Paul J.
• Application Number:
  US04/386,022
• Time in Patent Office: 923 Days
• US Class Current: 228/170
• CPC Class Codes: B23K 1/16 longitudinal seams, e.g. of shells
• CPC Class Codes: H01R 4/187 combined with soldering or welding

Claims

1. A METHOD OF FORMING A BRAZED SEAM BETWEEN TWO SHEET METAL EDGES, COMPRISING THE STEPS OF PROVIDING SERRATIONS ALONG ONE EDGE OF AT LEAST ONE OF THE SHEETS, SAID SERRATIONS EXTENDING INWARDLY INTO SAID EDGE FOR A DISTANCE THAT IS NOT SUBSTANTIALLY LESS THAN ONE-TENTH OF THE THICKNESS OF THE SHEET AND IS NOT SUBSTANTIALLY GREATER THAN THE THINKNESS OF THE SHEET, BUTTING THE SERRATED EDGE OF ONE OF THE SHEETS WITH AN EDGE OF THE OTHER SHEET SO THAT A V-SHAPED GROOVE IS FORMED THEREBETWEEN WITH THE SERRATIONS OPENING INTO THE GROOVE, WETTING SUBSTANTIALLY ALL OF THE SURFACE OF SAID GROOVE AND SAID SERRATIONS AND FILLING THE SAME WITH A LIQUID BRAZING ALLOY, AND COOLING SAID LIQUID ALLOY TO FORM A BRAZED SEAM.