Tube expander

Details Tube expander Tube expander

1980-04-03

1982-01-05

Larson, Lowell A.

Metal deforming

With indication of condition or position of work, product,...

Work drawn or extruded through die

72393, B21D 4102

Patent

active

043087361

ABSTRACT:
A tube expander for expanding or flaring the ends of automobile exhaust pipes and the like includes a segmented expander die having an arbor slidably received within the expander die segments for expanding the die upon movement of the arbor in a first predetermined direction. A manually operated device initially moves the die relative to the arbor to establish the amount of expansion to be permitted in the die and a separate independent hydraulic mechanism is then operated to move the arbor in the first direction in order to flare the end of a tube placed on the die to increase its diameter by a predetermined dimension. The compact structure provided enables the tool to be manually operated to flare tubes in situ on an automobile.

REFERENCES:
patent: 1039948 (1912-10-01), Hunter
patent: 2508377 (1950-05-01), Doerr
patent: 2605748 (1952-08-01), Rasoletti
patent: 3042121 (1962-07-01), Broetzman et al.
patent: 3385087 (1968-05-01), Huth
patent: 3466920 (1969-09-01), Parker
patent: 4043171 (1977-08-01), Brookman

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