Two-sheet folding wall or folding door of laminar elements

Details Two-sheet folding wall or folding door of laminar elements Two-sheet folding wall or folding door of laminar elements

1975-08-11

1976-09-14

Faw, Jr., Price C.

Static structures (e.g., buildings)

Barrier or major section mounted for in situ repositioning;...

Barrier of hingedly connected sections

49127, 160118, 160144, 160145, 160199, 160206, E04B 1344

Patent

active

039798615

ABSTRACT:
A two-sheet or double sided folding wall or door includes panel elements which are hinged in pairs along their inner edges to one another. To permit the door to be opened into a configuration wherein the panel elements are longitudinally aligned, and to permit the door to be closed into a fully folded position, horizontal brackets are mounted on at least one of each wall panel element pair. Bracket arms extend at an obtuse angle opposite the element in the closed position. A spring set between the free ends of the two opposing brackets exerts torsional forces around the panel element hinge axes. These forces act in a closing direction in a closed folding wall and in an opening direction in an open folding wall.

REFERENCES:
patent: 1481239 (1924-01-01), Folland
patent: 2027992 (1936-01-01), Maurer
patent: 2220939 (1940-11-01), McGuire et al.
patent: 2742084 (1956-04-01), Seymour
patent: 3029867 (1962-04-01), Maurer
patent: 3091816 (1963-06-01), Wetzel
patent: 3116782 (1964-01-01), Rudnick
patent: 3348628 (1967-10-01), Dixon et al.
patent: 3811489 (1974-05-01), Thun et al

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