Chairs and seats – Back movement resiliently opposed in operating position – Back adjusts independent of seat
Patent
1985-10-24
1987-12-01
Dorner, Kenneth J.
Chairs and seats
Back movement resiliently opposed in operating position
Back adjusts independent of seat
297300, 297304, 297316, 297320, A47C 1032
Patent
active
047099623
ABSTRACT:
The work chair has a seat squab and a backrest which both pivot on a seat carrier in the same direction interdependently. A load element is fitted to the seat carrier which is adjustable over its linear extension by means of a locking mechanism, whereby the load element pivots the seat squab and backrest into position of rest under spring loading.
To achieve a relatively large and symmetric spring loading in the smallest space it is foreseen that the load element should consist of two parallel compression springs in between which a hydraulic locking mechanism is fitted whereby one end of the load element is connected by a pivot to the free pivoting part of a lever arm, which forms the backrest-carrying part.
REFERENCES:
patent: 2365200 (1944-12-01), Lorenz
patent: 2507601 (1946-10-01), Kehle
patent: 3989297 (1976-11-01), Kerstholt
patent: 4200332 (1980-04-01), Brauning
patent: 4451085 (1984-05-01), Franck et al.
patent: 4471994 (1984-09-01), Zund et al.
patent: 4479679 (1984-10-01), Fries et al.
patent: 4502729 (1985-03-01), Locher
patent: 4509793 (1985-04-01), Wiesmann et al.
patent: 4537445 (1985-08-01), Neuhoff
Binder Mark W.
Dorner Kenneth J.
Kloeber GmbH & Co.
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