Chair, in particular office chair

Details Chair, in particular office chair Chair, in particular office chair

1993-07-14

1996-03-19

Bertsch, Richard A.

Chairs and seats

Back movement resiliently opposed in operating position

Back adjusts independent of seat

297317, 297322, A47C 3026

Patent

active

054998611

ABSTRACT:
The invention relates to a load-bearing frame for a chair, in particular for an office chair, which can be adjusted in terms of its height and inclination and comprises a seat carrier (1), a backrest carrier (2), a load-bearing and pivoting device (80) and a standing column (5). By means of struts (46, 32) arranged on the knee side and backrest side and supported on a spindle body, the seat carrier and backrest carrier (1, 2) are mounted on a spindle body such that they can pivot about a horizontal axis (X), oriented transversely to the seat direction, against the restoring force at least of a first spring element (40, 40'), and, in any position, can be fixed, and released again, by a second spring element. On the standing column (5) there is arranged a retaining device (10) through which the spindle body passes in the horizontal direction and on which a bracing element (20), by means of which the restoring force of the first spring elements (40, 40') can be adjusted, is mounted such that it can pivot about a bolt (15).

REFERENCES:
patent: 4390206 (1983-06-01), Faiks et al.
patent: 4776633 (1988-10-01), Knoblock et al.
patent: 5080434 (1992-01-01), Locher
patent: 5114211 (1992-05-01), Desanta

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