Horizontally supported planar surfaces – Folding – With vertical adjustability
Patent
1981-01-21
1983-07-12
Zugel, Francis K.
Horizontally supported planar surfaces
Folding
With vertical adjustability
108129, A47B 300
Patent
active
043924379
ABSTRACT:
A multiple-paneled folding tabletop is supported by two attached foldable subframes which interlock when unfolded and form a single frame supporting the tabletop by its perimeter. The tabletop consists of a series of rectangular panels attached to each other along their long edges by hinges. The direction of folding of the hinges alternates between panels. A subframe is affixed to each of the two end panels. The subframes include two swiveling bars which can move in a plane parallel to the unfolded tabletop. Each bar, when folded, is contained within a subframe and, when unfolded, spans the center panels and interlocks rigidly with the opposite subframe. Two foldable legs are attached to each subframe which, when folded, are contained within the subframes.
REFERENCES:
patent: 32894 (1861-07-01), Rounds
patent: 704552 (1902-07-01), Lieske
patent: 737455 (1903-08-01), Noble
patent: 1405362 (1922-01-01), Van Etten
patent: 1572282 (1926-02-01), Grignon
patent: 1618327 (1927-02-01), Dewey
patent: 2681841 (1954-06-01), Sperry
patent: 2750243 (1956-06-01), Zielfeldt
patent: 3208407 (1965-09-01), Maskew
patent: 3884159 (1975-05-01), Faria
patent: 3993003 (1976-11-01), James
patent: 4026219 (1977-05-01), Shupe et al.
Wilson Abraham
Zugel Francis K.
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