Adjustable swivel chair

Details Adjustable swivel chair Adjustable swivel chair

1984-07-12

1987-02-03

Dorner, Kenneth J.

Chairs and seats

Back movement resiliently opposed in operating position

Back adjusts independent of seat

297316, 297320, 297353, 297354, A47C 1032

Patent

active

046405470

ABSTRACT:
The present invention relates to an adjustable swivel chair with a pivoting angular holder for the backrest. The angular holder for the backrest is provided into an upper portion and an offset arm so as to allow for the articulated movement of the parts with respect to one another. The offset arm extends under the seating surface while the upper portion provides a support for the backrest. Adjustment means are provided in the form of frictional engagement of lamellar packs and the clamping thereof by means of a clamping adjustment device which may be released so as to position the movable elements with respect to one another. The assembly is mounted on a support post and the upper external portion of the support element defines the seat portion of the swivel chair.

REFERENCES:
patent: 2093319 (1937-09-01), Herold
patent: 2341124 (1944-02-01), Sheldrick
patent: 3034828 (1962-05-01), Kurihara
patent: 3602537 (1971-08-01), Kerstholt
patent: 3635525 (1972-01-01), Magyar
patent: 3837705 (1974-09-01), Marvaccini
patent: 3989297 (1976-11-01), Kerstholt

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