Seat adjustment apparatus

Details Seat adjustment apparatus Seat adjustment apparatus

1987-05-06

1989-04-04

Aschenbrenner, Peter A.

Chairs and seats

Movable bottom

Tiltable

74471XY, 297300, A47C 1022

Patent

active

048180203

ABSTRACT:
A seat such as an office chair has at least two gas spring units for performing different functions such as adjusting the angles of inclination of the backrest portion and the seat portion of the chair. The gas spring units are operated by a common operating lever having an operating handle at one end while at its second end it is carried in a vertical slot so as to be pivotable in a horizontal direction about the vertical axis of the slot and slidable lengthwise of the slot. At a location spaced from its second end the lever is mounted in a horizontal slot so as to be pivotable in a vertical direction about the axis of the horizontal slot as well as being slidable lengthwise of the horizontal slot, whereby different spring units can be actuated by different combinations of movements of the lever.

REFERENCES:
patent: 1822082 (1931-09-01), Davis
patent: 2379778 (1945-07-01), Allen
patent: 3788587 (1974-01-01), Stemmler
patent: 4103559 (1978-08-01), Kohler
patent: 4364605 (1982-12-01), Meiller
patent: 4470320 (1984-09-01), Kim
patent: 4521053 (1985-06-01), Boer
patent: 4589697 (1986-05-01), Bauer et al.
patent: 4603905 (1986-08-01), Stucki

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