Horizontally supported planar surfaces – Plural related horizontal surfaces – Coplanar extension surface
Patent
1995-02-06
1996-08-27
Cuomo, Peter M.
Horizontally supported planar surfaces
Plural related horizontal surfaces
Coplanar extension surface
108 80, 16348, 292338, A47B 104
Patent
active
055490514
ABSTRACT:
A hinge type drop-leaf support includes a table hinge plate, a leaf hinge plate, and a slotted strut. Both the table hinge plate and the leaf hinge plate are hingedly coupled to each other and each are provided with respective depending legs. One end of the strut is hingedly coupled to table hinge plate leg and the other end of the strut is provided with an L-shaped slot. The leaf hinge plate leg is provided with a pin which engages the L-shaped slot. The L-shaped slot and the depending legs are dimensioned so that the use of a detent is obviated. If desired, a coil spring may be provided at the hinged coupling of the strut and the table hinge plate leg to bias the strut in a downward direction. The L-shaped slot has a long portion and a short portion which form an angle between them which is preferably acute. When the leaf is raised, the pin on the leaf hinge plate leg moves through the long portion of the slot to the short portion of the slot where it is capture and prevented from moving back through the long portion of the slot. Moving the strut toward the leaf allows the pin the re-enter the long portion of the slot thereby allowing the leaf to drop.
REFERENCES:
patent: 188414 (1877-03-01), Rhode
patent: 197022 (1877-11-01), Eberhart
patent: 1902175 (1933-03-01), Luric
patent: 1933164 (1933-10-01), Corporon
patent: 2872260 (1959-02-01), Walter
patent: 2883249 (1959-04-01), Batson
patent: 2902326 (1959-09-01), Zimmerman
patent: 2943896 (1960-07-01), Gaston
patent: 3672312 (1972-06-01), Pettit et al.
patent: 4378107 (1983-03-01), Wagster et al.
Cuomo Peter M.
Wilkens Janet M.
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