High-strength tubular beam of folded corrugated cardboard

Details High-strength tubular beam of folded corrugated cardboard High-strength tubular beam of folded corrugated cardboard

1983-02-14

1986-01-07

Kittle, John E.

Stock material or miscellaneous articles

Hollow or container type article

Polymer or resin containing

138173, 108 513, 52723, 229 37E, B65D 1934

Patent

active

045633770

ABSTRACT:
A high-strength tubular beam of folded corrugated cardboard, for example for constructing disposable load-carrying platforms, comprising a single corrugated cardboard sheet (1) folded back several times on itself to form an overall section of right angled or isosceles trapezium form (4, 6', 8', 8, 6), divided into two adjacent rectangular or rectangular trapezium half sections (4, 6', 8', 18'), (4, 6, 8, 18), each comprising two mutually inverted triangular channel configurations (16', 14', 12')-(8', 10', 12'), (10, 8, 12)-(16, 14, 12), which mate with each other and have a common diagonal (12, 12').

REFERENCES:
patent: 3131656 (1964-05-01), Houle
patent: 3167038 (1965-01-01), Brown
patent: 3952672 (1976-04-01), Gordon et al.
patent: 4102525 (1978-07-01), Albano

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