Method of forming reinforced box-selection frame members

Details Method of forming reinforced box-selection frame members Method of forming reinforced box-selection frame members

1987-08-27

1988-07-26

Moon, Charlie T.

Metal working

Method of mechanical manufacture

Assembling or joining

29445, 29516, 29155R, 138140, 138172, B23P 1700

Patent

active

047591110

ABSTRACT:
This invention relates to a method of forming hollow, box-section, frame members which include localized reinforcement. The frame members are produced by fitting a sleeve about a tube, deforming the tube and sleeve to avoid the occurrence of frictional drag in a final die, and then expanding the tube and sleeve in a final die to form the hollow, box-section, frame member. The expansion is achieved by application of an internal pressure within the tube.

REFERENCES:
patent: 610262 (1898-09-01), Dikeman
patent: 2102325 (1937-12-01), Kylstra
patent: 2595695 (1952-05-01), Packer et al.
patent: 2752179 (1956-06-01), Le Febure
patent: 2774384 (1956-12-01), Wallace
patent: 3009484 (1961-11-01), Dollens
patent: 3253326 (1966-05-01), Henry et al.
patent: 3550269 (1970-12-01), Yatabe et al.
patent: 3863328 (1975-02-01), Arnty

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