Supports – Stand – Standard type
Patent
1984-08-16
1986-08-12
Britts, Ramon S.
Supports
Stand
Standard type
2481231, 108146, 108 6, F16M 1100
Patent
active
046051899
ABSTRACT:
Permanent locking mechanism can be released temporarily by depressing a pedal when adjusting the height and orientation of the drawing board. The movable assembly comprising the table supporting pillar is connected to the balancing system by a cable attached at one end to a spring passing around a return pulley having its axle supported by a strap of which the corresponding notch is directed towards the base of the frame structure, then around another return pulley formed with a helical groove and secured to the top of the frame structure, the other end of the cable being attached to the pillar. A locking member interconnects the axle and the pedal, this connection being discontinued in case of undesired slackening or breakage of the cable.
REFERENCES:
patent: 2404949 (1946-07-01), De Lisle
patent: 3096059 (1963-07-01), Johnson
patent: 3213809 (1965-10-01), Kritske
patent: 3358620 (1967-12-01), Parigi
patent: 3370556 (1968-02-01), Kooi
patent: 3543282 (1970-11-01), Sautereau
patent: 4111389 (1978-09-01), Gundlach et al.
patent: 4360180 (1982-11-01), Bruneau
patent: 4557450 (1985-12-01), Bruneau
Adams Bruce L.
Alpia S.A.
Britts Ramon S.
Burns Robert E.
Lobato Emmanuel J.
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