Adjustable box stool

Details Adjustable box stool Adjustable box stool

1979-11-02

1981-10-06

McCall, James T.

Horizontally supported planar surfaces

Vertically adjustable

With biased holding means; e.g., latch

248423, 297462, 312312, A47B 912, A47B 914, A47B 920

Patent

active

042929032

ABSTRACT:
This stool is adaptable for many uses, and it includes a hollow outer box, in which is slidably received an inner box, that is elevatable in height by linkage arms and a liftwire. The arrangement also includes a pair of pins for being positioned in openings of the outer box, so as to render the inner box secure at any desired height.

REFERENCES:
patent: 520702 (1894-05-01), Palmberg
patent: 872498 (1907-12-01), Cleveland
patent: 1020902 (1912-03-01), Hall
patent: 1058300 (1913-04-01), Hall
patent: 2649137 (1953-08-01), Roberts
patent: 2770293 (1956-11-01), Eichorst
patent: 3217672 (1965-11-01), Haughey

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