Chair, particularly a data display chair

Details Chair, particularly a data display chair Chair, particularly a data display chair

1980-07-17

1983-10-25

Zugel, Francis K.

Chairs and seats

Back movement resiliently opposed in operating position

Back and seat adjust simultaneously

297321, 297322, A47C 300

Patent

active

044114699

ABSTRACT:
A chair having a base, a seat, a backrest and a spring between the seat and the backrest. A first pair of links is pivotably connected to the seat and the backrest respectively and a second pair of links is pivotably connected to the seat and the base respectively, one pair forming an angle lever connected to the seat. One end of the spring is adjustably supported either by a nut and spindle and a bar between the angle lever and the spring or by a slide in the form of a nut on a threaded spindle and a guide slidably receiving the slide and arranged in the angle lever.

REFERENCES:
patent: 343654 (1886-06-01), Wilt
patent: 786326 (1905-04-01), Travers
patent: 2321385 (1943-06-01), Herold
patent: 2859801 (1958-11-01), Moore
patent: 3095415 (1963-06-01), Schliephacke
patent: 3128122 (1964-04-01), Mizelle
patent: 3337267 (1967-08-01), Rogers, Jr.
patent: 3989297 (1976-11-01), Kerstholt
patent: 4143910 (1979-03-01), Geffers et al.

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