One step tension expander and method of using

Details One step tension expander and method of using One step tension expander and method of using

1986-12-22

1988-01-26

Goldberg, Howard N.

Metal working

Means to assemble or disassemble

Puller or pusher means, contained force multiplying operator

291574, 29523, 29727, B21D 5302

Patent

active

047209020

ABSTRACT:
A method and apparatus for expanding in compression a portion of a plate fin heat exchanger up to a tube sheet and then gripping the expanded portion of the tube end to expand the remainder of the tube in tension and then unclamping and belling the end of the tube at a single station.

REFERENCES:
patent: 3437133 (1969-04-01), Bullard
patent: 4459917 (1984-07-01), Michael et al.
patent: 4519121 (1985-05-01), Yokosawa
patent: 4543711 (1985-10-01), Wada et al.
patent: 4584751 (1986-04-01), Gray et al.
patent: 4584765 (1986-04-01), Gray

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