Chair with an adjustable backrest

Details Chair with an adjustable backrest Chair with an adjustable backrest

1983-10-17

1987-02-03

Zugel, Francis K.

Chairs and seats

Movable bottom

Tiltable

297301, 297304, 297322, A47C 1032

Patent

active

046405488

ABSTRACT:
An adjustable chair, especially an office chair, includes a column (32), a seat (34), a backrest (36), supported by a curved supporting bar (40). Three horizontal transverse axes (44, 46, 48) connect the seat and the column, the column and the curved supporting bar and the curved supporting bar and the seat in one hinged triangular arrangement where at least one transverse axis permits not only a swiveling motion but also a relative shift of the connected parts to permit an adjustment of the seat and backrest. At least one of the transverse axes of this type consists of at least one rubber pad (46, 48).

REFERENCES:
patent: 3133765 (1964-05-01), Kramer
patent: 3224807 (1965-12-01), Welch et al.
patent: 4057214 (1977-11-01), Harder, Jr.
patent: 4065176 (1977-12-01), Fontana
patent: 4143910 (1979-03-01), Geffers et al.
patent: 4384741 (1983-05-01), Flum et al.

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