Method of forming a structural member from tubular material

Details Method of forming a structural member from tubular material Method of forming a structural member from tubular material

1997-10-21

1999-07-27

Larson, Lowell A.

Metal deforming

Process

Tube making or reshaping

298973, B21D 4100

Patent

active

059271388

ABSTRACT:
A method of forming a structural member from a tubular member having a hollow interior. The method includes cutting a pair of slots in the tubular member. The slots extend from a free end of the tubular member and generally longitudinally with respect thereto. The slots are located generally opposite one another. The method further includes inserting a platen edgewise into the slots so that the platen extends across the hollow interior of the tubular member from one slot to the other slot. The platen has a thickness less than the width of the slots. opposing end portions of the tubular member are radially compressed against opposite faces of the platen to form two generally parallel plates projecting endwise from the tubular member. The plates are spaced apart a distance generally equal to the thickness of the platen.

REFERENCES:
patent: 1420669 (1922-06-01), Schutte
patent: 2098752 (1937-11-01), Miller
patent: 3818746 (1974-06-01), Fujita
patent: 4014201 (1977-03-01), Troutner et al.
patent: 4088001 (1978-05-01), Ishikawa et al.
patent: 4621421 (1986-11-01), O'Loughlin
patent: 5333485 (1994-08-01), Ublacker

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