Suspension arrangement for a tilting chair

Details Suspension arrangement for a tilting chair Suspension arrangement for a tilting chair

1984-04-13

1986-03-11

McCall, James T.

Chairs and seats

Back movement resiliently opposed in operating position

Back and seat adjust simultaneously

248624, 297301, A47C 300

Patent

active

045751501

ABSTRACT:
A suspension arrangement for a chair of the type wherein a back and seat of the chair pivot conjointly but two different angles comprises a pair of main helical torsion springs spaced axially and supporting the back support relative to a main frame so that the back support can pivot about the axes of the springs. The seat is attached to the main frame by a forward pair of helical springs and to the back support by a rearward pair of helical springs so that the seat pivots about the front pair under control of the rear pair with the ratio of the angles controlled by the distance between the axes.

REFERENCES:
patent: 526265 (1894-09-01), Rossetti
patent: 1523746 (1925-01-01), Boliston
patent: 2463257 (1949-03-01), Fox
patent: 2606592 (1952-08-01), McIntyre
patent: 2991125 (1961-07-01), Lie

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