Chair seat tilting mechanism

Details Chair seat tilting mechanism Chair seat tilting mechanism

1995-05-16

1996-11-12

Brown, Peter R.

Chairs and seats

Back movement resiliently opposed in operating position

Back and seat adjust simultaneously

2973034, 297319, A47C 1032

Patent

active

055733034

ABSTRACT:
A chair seat tilting mechanism comprises a support for mounting to a chair spindle and a lever arm pivotally mounted at a pivot to the support, which lever arm is for mounting to a chair seat. A link arm is pivotally mounted at a pivot to the support and has a cam with a camming end positioned between the lever arm pivot mount and the link arm pivot mount. An extension of the link arm mounts to a chair back such that when a chair occupant leaning back on the chair back, the link arm pivots about the link arm pivot causing the cam to cam lever arm so that it pivots about its own pivot with the support. This results in the chair seat tilting forwardly.

REFERENCES:
patent: 2471024 (1949-05-01), Cramer
patent: 4966411 (1990-10-01), Katagiri et al.
patent: 4988145 (1991-01-01), Engel
patent: 5150948 (1992-09-01), Volkle
patent: 5423594 (1995-06-01), Hancock et al.

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