Chairs and seats – Back movement resiliently opposed in operating position – Back adjusts independent of seat
Patent
1996-11-05
1998-09-15
Nelson, Jr., Milton
Chairs and seats
Back movement resiliently opposed in operating position
Back adjusts independent of seat
2974522, A47C 300
Patent
active
058069313
ABSTRACT:
The device relates to a method for inclining the backrest of a chair, and a chair having an inclinable backrest, the structure of which is simplified to ensure easy inclination of the backrest and easy adjustment of the inclination force (locking force). An upper member of a backrest tubular frame is divided, and the divided upper members are disposed in parallel to each other with an appointed interval maintained in the vertical direction therebetween. The backrest is attached to both the upper members so that the lower part of the backrest is brought into contact with a lower member of the backrest tubular frame. A hypothetical rotating axis is formed between the upper members, and the backrest can be inclined by user's weight against a twisting force of both the upper members of the backrest tubular frame.
REFERENCES:
patent: 4548441 (1985-10-01), Ogg
patent: 5123702 (1992-06-01), Caruso
patent: 5348367 (1994-09-01), Mizelle
patent: 5350215 (1994-09-01), DeMars
patent: 5383712 (1995-01-01), Perry
patent: 5385388 (1995-01-01), Faiks et al.
patent: 5449220 (1995-09-01), Taylor et al.
patent: 5452937 (1995-09-01), Piretti
AICO Co., Ltd.
Jr. Milton Nelson
LandOfFree
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