Foldable framework and portable objects having such a framework

Details Foldable framework and portable objects having such a framework Foldable framework and portable objects having such a framework

1986-03-17

1987-08-11

Smith, Gary L.

Beds

With means for relocating an invalid

Horizontally sliding patient support surface

5111, 5116, 5117, 403 55, 403 93, A61G 100, A47C 1916

Patent

active

046851615

ABSTRACT:
A foldable framework and foldable objects such as stretchers, foldable beds, foldable bridges and the like embodying such framework. The framework comprises first and second carrier rod assemblies linked to each other by foldable connecting means, each such assembly comprising four rods linked by three joints, a central joint and two peripheral joints so designed that the extreme rods of the two carrier rod assemblies swing in different planes. In consequence, in the folded state the extreme rods of one carrier rod assembly come to rest between the extreme rods of the other carrier rod assembly.

REFERENCES:
patent: 926438 (1909-06-01), Ranko
patent: 1129089 (1915-02-01), Hajas
patent: 2650373 (1953-09-01), Zeller et al.
patent: 3555578 (1971-01-01), Pile
patent: 3886606 (1975-06-01), Bradford

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