Collapsible support apparatus

Details Collapsible support apparatus Collapsible support apparatus

1981-11-30

1987-06-09

McCall, James T.

Chairs and seats

Collapsible chair; i.e., relatively folding bottom, back,...

Collapsed to a compact bundle having all rigid elongated...

2481886, 2481887, 297441, A47C 400

Patent

active

046715665

ABSTRACT:
A collapsible chair has a sheet of flexible mesh material supported by four arms extending in a tetrahedral pattern from a self-locking, gravity-operated base joint. The outward ends of the front arms are angled upwardly. U-shaped stabilizing legs pivot outwardly from the front arms to a forwardly extended position. The support arms are received in pockets in the flexible sheet to permit detachment thereof. The arms are pivotally connected to the base joint to permit them to be folded parallel to each other. The hollow rectangular lower ends of the arms telescopically receive similiarly shaped guide arms on the base joint to permit axial movement between an upward position in which the arms are freely pivotable and a downward position in which the arms are automatically locked in the tetrahedral position.

REFERENCES:
patent: 589464 (1897-09-01), Church
patent: 2473090 (1949-06-01), Becker
patent: 2722972 (1955-11-01), Altruda
patent: 2854061 (1958-09-01), Romito
patent: 2858140 (1958-10-01), Stamp
patent: 3396928 (1968-08-01), Lay
patent: 3483999 (1969-12-01), Barrett
patent: 3501118 (1970-03-01), Meinunger
patent: 4047752 (1977-09-01), Rohr
patent: 4324433 (1982-04-01), Saiger

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