Method of and apparatus for manufacturing double contact rivets

Details Method of and apparatus for manufacturing double contact rivets Method of and apparatus for manufacturing double contact rivets

1976-12-02

1978-02-14

Kelly, Donald G.

Metal fusion bonding

Process

Using only pressure

228 31, 228 51, 228160, 228904, B23K 2100, B21K 162

Patent

active

040734250

ABSTRACT:
A double-contact rivet is formed from wire portions cut from wire supplies. The wire portions are aligned so that outer portions of electric contact material are located on either side of a central portion of support material, and the two outer portions are cold-welded to the central portion. One end of the body so formed is punched to provide a contact head while the bead formed by the cold-welding at the other end is pressed to a substantially flat ring form and hardened by rapid cooling. The hardened ring bead is cleanly cut from the remainder of the rivet.

REFERENCES:
patent: 3026603 (1962-03-01), Zysk
patent: 3397454 (1968-08-01), Gwyn
patent: 3460735 (1969-08-01), Shibata
patent: 3600794 (1971-08-01), Shibata
patent: 3634934 (1972-01-01), Fitzgerald

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