Roller tube for awning and method of forming

Details Roller tube for awning and method of forming Roller tube for awning and method of forming

1994-05-25

1995-01-24

Larson, Lowell A.

Metal deforming

By tool-couple pressing together adjacent surface portions...

To form longitudinally-seamed tube

B21D 3902

Patent

active

053833465

ABSTRACT:
A galvanized and coated roll formed tube has several slideway channels formed therein. Edges of the sheet material forming the tube are folded back and interlocked in a hook arrangement to form a seam. The seam is located radially inwardly from the inner circumferential surface of the tube, preferably on a wall of one of the channels. Strengthening ridges are also formed in the tube. The tube is attached to an awning and supported at each end by poles or outriggers. The awning is also attached to a wall so as to be rollable around the tube.

REFERENCES:
patent: 697955 (1902-04-01), Thompson

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