Chair having synchronously coupled tiltable seat and back rest

Details Chair having synchronously coupled tiltable seat and back rest Chair having synchronously coupled tiltable seat and back rest

1977-09-12

1979-03-13

Zugel, Francis K.

Chairs and seats

Back movement resiliently opposed in operating position

Back adjusts independent of seat

297320, A47C 1032

Patent

active

041439104

ABSTRACT:
A chair having an adjusting device for synchronously coupling a tiltable back rest to a tiltable seat comprises a seat support, a seat pivotally connected to the seat support, a back rest support pivotally connected to the seat support, a linkage between the seat and back rest support for causing pivotal motion of the back rest support to effect related pivotal motion of the seat, and a stored power element such as a fluid spring connected between the seat support and back rest support and concealed within a back rest mounted on the back rest support.

REFERENCES:
patent: 964012 (1910-07-01), Folts
patent: 2163751 (1939-06-01), Flint
patent: 2426336 (1947-08-01), Binus
patent: 2456797 (1948-12-01), Sheldrick
patent: 2516172 (1950-07-01), Baldwin
patent: 3455601 (1969-07-01), Lie
patent: 3602537 (1971-08-01), Kerstholt et al.

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