Collapsible self-supporting structures

Details Collapsible self-supporting structures Collapsible self-supporting structures

1981-08-07

1984-03-20

Murtagh, John E.

Static structures (e.g., buildings)

Lazy tong extension unit

E04H 1218

Patent

active

044372752

ABSTRACT:
Self-supporting structures and panels of diverse shapes are disclosed in which basic assemblies of crossed rod elements are employed to achieve the desired shape. Further, the crossing points of crossed rod elements in the structure involved may include limited sliding connections which effect transfer of collapsing force to other crossing points which are pivotally joined. An improved hub structure for pivotally joining ends of the rod elements at the outer and inner apical points is also disclosed.

REFERENCES:
patent: 415667 (1889-11-01), Edwards
patent: 540863 (1895-06-01), Lawson
patent: 1947647 (1934-02-01), Holden
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patent: 3496687 (1970-02-01), Greenberg
patent: 3557500 (1971-01-01), Schmidt
patent: 3766932 (1973-10-01), Schneider
patent: 3888056 (1975-06-01), Kelley
patent: 3968808 (1976-07-01), Zeigler
patent: 4026313 (1977-05-01), Zeigler
patent: 4276726 (1981-07-01), Derys
patent: 4290244 (1981-09-01), Zeigler

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