Strip of flexible corrugated material

Details Strip of flexible corrugated material Strip of flexible corrugated material

1982-09-28

1984-12-04

Thibodeau, Paul J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Nonplanar uniform thickness material

138122, 138129, 138135, 428 36, 428212, 428222, B32B 328, B32B 108

Patent

active

044864841

ABSTRACT:
A strip of very thin flexible material has continuous longitudinal corrugations in the form of curved ridges and hollows, and may be curled helically to form a flexible tube. The strip has a first marginal ridge with a radius of curvature smaller than that of all other ridges, and a second marginal ridge with a radius of curvature larger than that of all other ridges. As the strip is curled with the first marginal ridge overlying a first intermediate ridge and the second marginal ridge underlying a second intermediate ridge, the marginal ridges are respectively spread over and closed under the intermediate ridges to conform to the curvature thereof.

REFERENCES:
patent: 3815639 (1974-06-01), Westerbarkey
patent: 3913623 (1975-10-01), Siegwart
patent: 4141385 (1979-02-01), Siegwart

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