Tilting control assembly for chair

Details Tilting control assembly for chair Tilting control assembly for chair

1990-06-19

1992-01-14

Foss, J. Franklin

Supports

Resilient support

Including load sustaining bearing or guide

297302, 297326, F16M 1300

Patent

active

050803182

ABSTRACT:
The present invention provides a tilting control assembly for a chair which comprises a support mechanism mounted on a chair leg post, a chair seat carried by the support mechanism, and a chair back arranged behind the seat. At least one of the seat and the back constitutes a tiltable member. The tilting control assembly comprises at least one tilting control spring for elastically supporting the tiltable member via at least one contact member, and an adjusting mechanism which is automatically responsive to the weight applied to the seat for causing relative displacement between the tilting control spring and the contact member in a manner such that the spring constant of the tilting control spring increases as the applied weight increases.

REFERENCES:
patent: 391822 (1888-10-01), Stewart
patent: 2360428 (1944-10-01), Larsen
patent: 2478112 (1949-08-01), Larsen
patent: 2818911 (1958-01-01), Syak
patent: 2956619 (1960-10-01), Scherer
patent: 3627252 (1971-12-01), Yamaguchi
patent: 3740792 (1973-06-01), Werner
patent: 4077596 (1978-03-01), Pinaire
patent: 4290646 (1981-09-01), Edel
patent: 4744600 (1988-05-01), Inoue
patent: 4889384 (1989-12-01), Sulzer

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