Posture chair

Details Posture chair Posture chair

1977-06-20

1979-10-09

Zugel, Francis K.

Chairs and seats

Back movement resiliently opposed in operating position

Constantly oriented during up-and-down movement

297353, A47C 740

Patent

active

041703820

ABSTRACT:
A posture chair is provided with a spring-biased back in which the spring means is located underneath, adjacent to and substantially parallel with the bottom of the seat and in which the back is adjustable both vertically and rearwardly so that, when the back is adjusted upwardly to accomodate a larger person, it is simultaneously moved backward so that the depth of the seat is increased.

REFERENCES:
patent: 252980 (1882-01-01), Tonk et al.
patent: 1368469 (1921-02-01), Atwood
patent: 2328243 (1943-08-01), Wood
patent: 2329327 (1943-09-01), Boerner
patent: 2329673 (1943-09-01), Wood
patent: 2570177 (1951-10-01), Wood
patent: 3034828 (1962-05-01), Kurihara
patent: 3720442 (1973-03-01), Bergmann et al.

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