Method for making a frame-like shell

Details Method for making a frame-like shell Method for making a frame-like shell

1989-11-17

1990-12-18

Heinrich, Sam

Metal fusion bonding

Process

With shaping

2281735, 222600, 164411, B23K10124, B22C 2114, B22D 4130, B22D 4132

Patent

active

049780530

ABSTRACT:
A band-like plate is bent until both ends of the plate meet with each other, and then both ends of the plate are joined by welding so as to make a loop. A pair of first and second inner dies are placed inside the loop while a pair of first and second outer dies are placed outside the loop. The loop is held by the inner and outer dies. At the same time or after that, the loop is pressed by the inner dies when the first and/or second dies move in a given direction.

REFERENCES:
patent: 1060320 (1913-04-01), Clark
patent: 2571475 (1951-10-01), O'Donnell
patent: 4627147 (1986-12-01), Kagi
patent: 4640455 (1987-02-01), Grein et al.

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