Horizontally supported planar surfaces – Plural related horizontal surfaces – Coplanar extension surface
Patent
1976-12-08
1978-03-07
Zugel, Francis K.
Horizontally supported planar surfaces
Plural related horizontal surfaces
Coplanar extension surface
108111, A47B 105
Patent
active
040773353
ABSTRACT:
An extensible table has a rectangular frame with pairs of longitudinal beams and cross beams, a leg at each corner, and two draw-out plates which can be selectively stacked, and aligned in co-planar condition. The improvement is that each leg has a top recess in which is engaged a male portion of a shoulder element including an upper L-shaped portion defining a cavity to receive the cross beams. Roller means are on one arm of the L-shaped portion to carry the draw-out plates. Each longitudinal beam has on an inner face a mirror-image groove formation in which are received lateral rollers on the draw-out plates.
REFERENCES:
patent: 1182731 (1916-05-01), Anthony
patent: 1532715 (1925-04-01), Petrarca
patent: 2102449 (1937-12-01), Zimmerman
patent: 2874708 (1959-02-01), Daus
patent: 3747965 (1973-07-01), Wing
patent: 3835354 (1974-09-01), Torres-Pena
Luzzani Umberto
Riva Giuseppe
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