Interengageable structural members
AssigneeTube Technology Pty. Ltd.
InventorLeslie D. Goleby
Life of this patent
Estimating the term…
Abstract
Structural members (80) having an intermediate web (81) and hollow tubular side flanges (83, 85) extending longitudinally of the web (81) are formed in a cold rolling operation such that one of the tubular side flanges (83) has an outside diameter of the opposite tubular side flange (85). The larger diameter side flange (85) has a longitudinally slotted aperture (87) to permit a composite structure (120) to be formed by nesting the smaller diameter flange (83) in the larger diameter flange (85) of an adjacent structural member (80). The composite structure (120) having a plurality of interconnected structural members (80) may be assembled as a closed or open structure.
Claims19
A method for the manufacture of structural members adapted for telescopic edge to edge engagement with a like structural member, said method comprising the steps of:
- cold roll forming a structural member having an intermediate web member and opposed closed hollow side flanges extending along opposite sides of said web, said hollow side flanges being closed by welding the free edges thereof to respective junctions between the intermediate web and the hollow flanges;
- and
- forming a slotted aperture in at least one of said hollow side flanges, said slotted aperture extending between opposed ends of said hollow side flange parallel to said intermediate web.
Dependencies are inferred from the claim text.