Method of fabricating hollow, foam-filled, metal structural memb

Details Method of fabricating hollow, foam-filled, metal structural memb Method of fabricating hollow, foam-filled, metal structural memb

1974-11-18

1976-07-13

White, Robert F.

Metal working

Method of mechanical manufacture

Assembling or joining

29463, 29526, 264 455, 264 465, 264 466, 264 467, 264DIG14, B23P 300

Patent

active

039685616

ABSTRACT:
A hollow structural member formed of thin sheet steel is formed with one or more longitudinal joints and the interior is filled with a rigid lightweight synthetic plastics foam such as polyurethane. Each joint includes folded lips or flanges which are designed to provide a restricted clearance or gap into which the foaming material penetrates and changes from a cellular to a non-cellular composition and also provides an adhesive bond at each joint and a moisture proof seal.

REFERENCES:
patent: 1345904 (1920-07-01), Wishart
patent: 3156332 (1964-11-01), Cameron
patent: 3186131 (1965-06-01), Denny et al.
patent: 3251912 (1966-05-01), Fish
patent: 3451696 (1969-06-01), Hagelin et al.
patent: 3579724 (1971-05-01), Toth
patent: 3750333 (1973-08-01), Vance

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