Adjustable seat

Details Adjustable seat Adjustable seat

1987-05-11

1988-05-10

Dorner, Kenneth J.

Chairs and seats

Back movement resiliently opposed in operating position

Back and seat adjust simultaneously

74471XY, 297301, 297306, 297316, 297328, A47C 1024, A47C 3026

Patent

active

047430656

ABSTRACT:
A seat such as an office chair comprises a seat carrier assembly carrying an adjustable seat portion and also an adjustable backrest portion. The inclination of the backrest portion can be adjusted by means of a first gas spring unit while inclination of the seat portion is adjusted by means of at least one and preferably two second gas spring units. An actuating lever is operatively connected to the valve actuating members of the respective gas spring units and is pivotable about a pivot point in first and second directions, the second direction being at least substantially perpendicular to the first direction. The actuating lever is pivotable in the first direction for adjusting backrest inclination only and is pivotable in the second direction for adjusting seat portion inclination only, and it can be pivoted in the first direction when it is selectively at first and second spaced-apart positions as considered in the second direction of its movement, to permit combined movement of the seat and backrest portions.

REFERENCES:
patent: 4364605 (1982-12-01), Meiller
patent: 4408800 (1983-10-01), Knapp
patent: 4537445 (1985-08-01), Neuhoff
patent: 4589697 (1986-05-01), Bauer et al.
patent: 4629249 (1986-12-01), Yamaguchi

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