Height adjustable work plate

Details Height adjustable work plate Height adjustable work plate

1982-09-23

1985-12-24

Lyddane, William E.

Horizontally supported planar surfaces

Biased surface

108146, A47B 902

Patent

active

045598797

ABSTRACT:
A height adjustable work plate, particularly for sewing machine tables, including a carriage supporting the work plate and being slidably guided on a vertical frame structure, wherein the work plate is assisted by a pneumatic spring provided at its upper end with a pulley over which a rope is trained, one end of the rope being attached to the frame and the other end to the carriage.

REFERENCES:
patent: 2805580 (1957-09-01), Kane
patent: 2819042 (1958-01-01), Feucht
patent: 3327985 (1967-06-01), Levit et al.
patent: 3444830 (1969-05-01), Doetsch
patent: 3606021 (1971-09-01), Roels
patent: 4119044 (1978-10-01), Hines
patent: 4130069 (1978-12-01), Evans et al.

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