US 4,743,065 AGranted

Adjustable seat

AssigneeGrammer Sitzsysteme GmbH

InventorsHermann Meiller, Wolfram Jahn

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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.

Claims5

Dependent claims

A seat comprising a seat carrier means, a seat portion carried on the seat carrier means and adjustable in respect of its inclination, a backrest portion adjustable in respect of its inclination, a first gas spring means having an actuating member and operatively connected to the backrest portion for adjustment of the inclination thereof, at least one second gas spring means having an actuating member and operatively connected to the seat portion for adjustment of the inclination thereof, an actuating lever pivotable about a pivot point in a first direction and in a second direction perpendicular to the first direction, and connecting means operatively connecting the actuating lever to the actuating members of said gas spring means, such that the actuating lever is operable to adjust only the inclination of the backrest portion when the actuating lever is moved in said first direction from a first non-actuating position to a spaced-apart second actuating position, and the actuating lever is operable to adjust only the inclination of the seat portion when the actuating lever is moved in said second direction from a first non-actuating position to a spaced-apart second actuating position, wherein the said actuating lever is adapted to be operated in said first direction when it is in respective ones of said first and second spaced-apart position in said second direction of pivotal movement thereof.

Dependencies are inferred from the claim text.