Static structures (e.g. – buildings) – Openwork; e.g. – truss – trellis – grille – screen – frame – or... – Components adjustably or collapsibly connected
Patent
1977-08-11
1978-09-26
Ridgill, Jr., James L.
Static structures (e.g., buildings)
Openwork; e.g., truss, trellis, grille, screen, frame, or...
Components adjustably or collapsibly connected
248166, 248432, E04B 1343
Patent
active
041159756
ABSTRACT:
A foldable and extensible structure fabricated from one or more foldable and extensible base modules. Each base module is fabricated from six rigid members swivelly interconnected end-to-end in a closed figure with intersecting rigid members being pivotally connected. A plurality of base modules are selectively interconnected at adjacent swivels and, selectively, with additional rigid members or struts to thereby provide an enlarged, foldable and extensible truss-like structure. In one preferred embodiment, a plurality of base modules are interconnected in an end-to-end configuration to form an elongated, three-dimensional structure which folds into a triangular configuration having a relatively flat profile while, simultaneously, being extensible at a relatively high ratio to form the elongated structure. The base module can also be configurated as a collapsible and portable stool by being fitted with a triangular seat structure. The seat has a swivel-receiving pocket in each corner to individually receive one of the three swivels at one end of the base module. The swivels at the other end of the base module serve as feet for the stool.
REFERENCES:
patent: 2479250 (1940-08-01), Mote
patent: 3968808 (1976-07-01), Zeigler
patent: 4026313 (1977-05-01), Zeigler
Ridgill, Jr. James L.
University of Utah
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