Chairs and seats – Movable bottom – Tiltable
Patent
1987-02-13
1988-12-06
Dorner, Kenneth J.
Chairs and seats
Movable bottom
Tiltable
297300, A47C 102
Patent
active
047892030
ABSTRACT:
Chair comprising a support element, a seat and a backrest, the seat consisting of a foremost portion being rigidly connected to the support element and of a rear portion being pivotally connected to the support element and being supported by an arm at some distance from its pivot, said arm being positioned beneath the seat and carrying the backrest. Said arm being pivotally connected to the support element and being biased by a progressively acting spring member towards the position which the rear seat portion and the backrest are occupying in the unloaded state.
REFERENCES:
patent: 2083838 (1937-06-01), Goenen
patent: 2855026 (1958-10-01), Simons et al.
patent: 3711149 (1973-01-01), Carter
patent: 4027843 (1977-06-01), Thompson
patent: 4057214 (1977-11-01), Harder, Jr.
patent: 4502729 (1985-03-01), Locher
patent: 4533177 (1985-08-01), Latone
patent: 4682814 (1987-07-01), Hansen
Boomsma Harm
Lewerissa Ronald
van Zee Eric
Verbrugge Jeroen
Ahrend Groep N.V.
Cranmer Laurie K.
Dorner Kenneth J.
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