Horizontally supported planar surfaces – With housing – Formed by collapsible surface
Patent
1986-09-29
1988-04-12
Dorner, Kenneth J.
Horizontally supported planar surfaces
With housing
Formed by collapsible surface
312208, 312 27, A47B 300
Patent
active
047366907
ABSTRACT:
A lifting table top mechanism is provided wherein a table top can be raised or lowered between two stable positions with respect to the table base, by means of moving a handle. The handle is incorporated into a rotating bar which is configured so that, when attached to the lower faces of a lower plate attached to the table base and one or two upper plates attached to the table top, movement of the handle causes the upper plates to be drawn toward or pushed away from the lower plate. A connecting bar, configured to be attached to the lower plate and upper plates, rotates in tandem with the rotating bar. A linear linking member links each end of the rotating bar to the corresponding end of the connecting bar. The upper plates are stablized in one of two positions: adjacent to the lower plate or at a maximum distance permitted by the configuration of the connecting bar and rotating bar. Such stabilization is achieved by an expansion spring mechanism and by the configuration of the connecting bar and rotating bar.
REFERENCES:
patent: Re28835 (1976-06-01), Roberts
patent: 78250 (1868-05-01), Witney
patent: 544821 (1895-08-01), Morrison
patent: 848332 (1907-03-01), Westervelt
patent: 1689445 (1928-10-01), Merriman
patent: 1965370 (1934-07-01), Cohn
patent: 2630359 (1953-03-01), Schade
patent: 3352431 (1967-11-01), Smith
patent: 3614184 (1971-10-01), Yawata
Anderson Gerald A.
Dorner Kenneth J.
Gould Linda Flewellen
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