Collapsible tetrahedral structure

Details Collapsible tetrahedral structure Collapsible tetrahedral structure

1976-09-29

1977-12-27

Braun, Leslie

Static structures (e.g., buildings)

Barrier or major section mounted for in situ repositioning;...

Barrier of hingedly connected sections

46 1L, 46 21, 52 81, 52 10S, 135 4C, 229 22, E04B 1343

Patent

active

040646629

ABSTRACT:
A collapsible rigid lodgment structure erectable from a single blank and collapsible to a relatively small, compact and transportable size is shown and described. The structure when collapsed can be folded by folds and bifurcations to have an area approximately one-fourth the area of the blank from which the structure is made. When erected, the structure is generally in the form of a tetrahedron. The structure when erected is suitable for expedient use as a hut or shelter.

REFERENCES:
patent: 2835931 (1958-05-01), Sterkin
patent: 2936939 (1960-05-01), Lundquist
patent: 3042052 (1962-07-01), Des Rosier
patent: 3267597 (1966-08-01), Jannes
patent: 3319684 (1967-05-01), Calhoun
patent: 3359657 (1967-12-01), Hedberg
patent: 3461574 (1969-08-01), Larsen et al.
patent: 3730818 (1973-05-01), Salinari
patent: 3759277 (1973-09-01), Glade
patent: 3899123 (1975-08-01), Stollberg et al.
patent: 3937426 (1976-02-01), Pearce

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