Frame collapsible and extendable by means of a turning movement

Details Frame collapsible and extendable by means of a turning movement Frame collapsible and extendable by means of a turning movement

1995-08-22

1999-08-24

Berger, Derek J.

Supports: racks

Knockdown

Foldable or collapsible

211167, 248150, A47B 4300

Patent

active

059414006

ABSTRACT:
A frame collapsible and extendable by means of a turning movement, which frame comprises a number of supporting frames (1) and a number of rod-like upright elements (2, 2'), each upright element being connected to a supporting frame via a pivot (3) for pivoting through at least 90.degree. and being connected to at least one end via a hinge joint (4) and to one end of a further upright element connected to a further supporting frame for swinging and turning about its longitudinal axis, in such a manner that in a first collapsed position the supporting frames form a compact stack with upright elements and in a second extended position the supporting frames are spaced with the upright elements mutually resting on each other surface-to-surface as positioning means, while a spring force in the hinge joint must be overcome to bring the frame out of the extended position.

REFERENCES:
patent: 494141 (1893-03-01), Harris
patent: 3261308 (1966-07-01), Szymber
patent: 3751863 (1973-08-01), Lyons
patent: 3967327 (1976-07-01), Severson
patent: 4081177 (1978-03-01), Graff
patent: 4352327 (1982-10-01), Sleep
patent: 4578919 (1986-04-01), Amadon et al.
patent: 4746022 (1988-05-01), Benham
patent: 5131547 (1992-07-01), Goldberg
patent: 5149282 (1992-09-01), Donato et al.
patent: 5163262 (1992-11-01), Adams
patent: 5163569 (1992-11-01), Buff

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