Method and apparatus for forming intruded branch attachment stru

Details Method and apparatus for forming intruded branch attachment stru Method and apparatus for forming intruded branch attachment stru

1986-08-15

1987-07-14

Goldberg, Howard N.

Metal working

Means to assemble or disassemble

Puller or pusher means, contained force multiplying operator

29 33T, 83192, 83188, B21D 5300, B23D 2114

Patent

active

046792899

ABSTRACT:
Method and apparatus for forming intruded sleeves in extrudable metal tubing thereby to receive branch tubes which are brazed in place. The apparatus comprises a split mandrel and a punch which drives a punch head through the tube wall section and into a pocket in the upper section of the mandrel to form the intruded sleeve structure. Removal of the mandrel is accomplished by removing a lower section, dropping the upper section off of the intruded sleeves, and thereafter removing the upper section.

REFERENCES:
patent: 1675910 (1928-07-01), Riker
patent: 2325437 (1943-07-01), Temple
patent: 2670795 (1954-03-01), Griep
patent: 2875829 (1959-03-01), Patrick
patent: 3125149 (1964-03-01), May
patent: 4162570 (1979-07-01), Trittipoe
patent: 4253224 (1981-03-01), Hickman et al.
patent: 4364406 (1982-12-01), Bohlin

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