Module for expandable framework structure and expandable framewo

Details Module for expandable framework structure and expandable framewo Module for expandable framework structure and expandable framewo

1992-11-30

1993-09-14

Friedman, Carl D.

Static structures (e.g., buildings)

Openwork; e.g., truss, trellis, grille, screen, frame, or...

Components adjustably or collapsibly connected

52645, E04H 1218

Patent

active

052438031

ABSTRACT:
An expandable framework structure is formed by connecting together a plurality of polygonal prism-like framework structure modules with one side of a module serving also as one side of another module adjacent thereto. A module employed comprises stems each having a joint as well as a slide hinge, pairs of pantograph-like diagonal members and cables. This serves to provide an expandable framework structure having high stability and reliability and which is free from any rattling of the connecting pin at the pin connected portion. Thus, the expandable framework structure provided is highly rigid and hence is capable of maintaining a stable configuration after developed. The module employed also comprises vertical frames, foldabIe members, main hinges, intermediate hinges and diagonal cables. The rotational axis of the pin of the intermediate hinge deviates from the center axis of the foldable member realized when it has been unfolded. The foldable members and the diagonal cable, when stretched, serve to maintain the configuration of the expandable framework structure stable without additional latch mechanisms. Thus, an expandable framework structure provided requires less components and hence is light and easy to stow away.

REFERENCES:
patent: 4475323 (1984-10-01), Schwartzberg
patent: 4482900 (1984-11-01), Bilek
patent: 4527362 (1985-07-01), Tobey
patent: 4896165 (1990-01-01), Koizumi
patent: 5014484 (1991-05-01), Tanizawa et al.
WO85/02434 International Application Published Under The Patent Cooperation Treaty Jun. 1985; 2 sht of drawing; 14 pp. of spec.

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