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. 16, 1976
Filed:
Dec. 13, 1974
David Porat, Brookline, MA (US);
Other;
Abstract
A method for joining, by molecular diffusion, an element of greater electrical resistance to a surface of substantially lesser electrical resistance. A piece of resistive material capable of being spot welded to the element of greater electrical resistance is placed in contact with both the surface having substantially lesser electrical resistance and the element having the greater electrical resistance. The resistive piece and the resistive element are spot welded to each other, whereby the heat from that spot weld causes the conductive material to be joined to the piece of resistive material by molecular diffusion. The method is particularly useful for joining nichrome wire to copper-clad printed circuit boards and for joining metal fasteners to copper and aluminum sheet metal surfaces.