Method for belling and expanding coils

Details Method for belling and expanding coils Method for belling and expanding coils

1988-02-08

1989-03-28

Eley, Timothy V.

Metal working

Means to assemble or disassemble

Puller or pusher means, contained force multiplying operator

291573C, 291574, 29523, 29727, B21D 5302

Patent

active

048151858

ABSTRACT:
A method and apparatus for belling and expanding the tubes of a plate fin heat exchanger that involves a gripper for gripping the tube during the belling operation and a clamp for clamping a tube sheet during the tension expanding operation.

REFERENCES:
patent: 3824668 (1974-07-01), Wightna
patent: 4584751 (1986-04-01), Gray et al.
patent: 4584765 (1986-04-01), Gray
patent: 4589198 (1986-05-01), Greever et al.
patent: 4631813 (1986-12-01), Daniels et al.
patent: 4761866 (1988-08-01), Murphy

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