Cushioning mechanism for use with seat of chair and interlocking

Details Cushioning mechanism for use with seat of chair and interlocking Cushioning mechanism for use with seat of chair and interlocking

1987-04-28

1988-05-17

McCall, James T.

Chairs and seats

Movable bottom

Tiltable

248575, 297300, 297304, A47C 102

Patent

active

047446005

ABSTRACT:
A cushioning mechanism suitable for use with an office chair is disclosed. A seat frame is connected pivotally to the front of a support frame for swinging motion about the pivotal connection. The swinging motion of the seat frame is converted into the translation thereof by means of a link mechanism, and thus a cushioning member such as a coil spring incorporated in the support frame is compressed by the translation of the seat frame. Accordingly, even when the seat portion is made to swing by a large degree, the front of the seat portion is not greatly shifted in height, thereby enabling the user to sit in the chair comfortably.

REFERENCES:
patent: 4018415 (1977-02-01), Wolters
patent: 4200332 (1980-04-01), Brauning
patent: 4641885 (1987-02-01), Brauning
patent: 4653806 (1987-03-01), Willi
patent: 4659052 (1987-04-01), Nagata

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