Static structures (e.g. – buildings) – Lazy tong extension unit
Patent
1983-11-17
1988-05-31
Murtagh, John E.
Static structures (e.g., buildings)
Lazy tong extension unit
52581, 52646, E04H 1218
Patent
active
047472391
ABSTRACT:
A pair of self-supporting exhibit frames formed of a plurality of pairs of crossed rods are constructed so as to be moved between a collapsed position at which the rods are disposed in a compact bundle of side-by-side rods and an erected position at which each exhibit frame includes a lateral upstanding side defined by at least two crossed rods disposed in a generally X-shaped pattern, the exhibit frames being positioned with their lateral upstanding sides immediately adjacent each other and with the X-shaped rods aligned, and at least one bracket spanning the lateral upstanding sides, the bracket including at least two slots and preferably four slots disposed with one pair of slots along each of two side edges of the bracket, and the slots being sized to snugly frictionally grippingly engage the X-shaped rod to thereby maintain the exhibit frames locked together in adjacent upstanding relationship.
REFERENCES:
patent: 563375 (1896-07-01), Heintz
patent: 815409 (1906-03-01), Cummings
patent: 904978 (1908-11-01), Miles
patent: 3131705 (1964-05-01), Marino
patent: 3354596 (1967-11-01), Schafer
Murtagh John E.
Snyder John P.
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