Seat with an adjustable back

Details Seat with an adjustable back Seat with an adjustable back

1975-09-04

1977-02-01

Britts, Ramon S.

Chairs and seats

Movable bottom

Tiltable

297355, 297361, A47C 102

Patent

active

040059030

ABSTRACT:
An adjustable chair the structure of which features a supporting structure, a thigh supporting frame which is rigidly connected to the supporting structure, a buttocks support which is pivotally connected to the supporting structure, a back frame rigidly affixed to the buttocks support at an angle thereto, the buttocks support being adjustably connected to the thigh supporting frame by laterally spaced pivotal connections for adjusting the inclination of the buttocks support relative to the thigh supporting frame, a unitary, taut resilient covering which is disposed upon and interconnects with both the thigh supporting frame and buttocks support, said covering having cut out portions in the area of the buttocks support adjacent each pivotal connection and extending from the back frame to a portion of the thigh support frame adjacent each pivotal connection whereby when said buttocks support adjacent each pivotal connection and extending from the back frame to a portion of the thigh supporting frame adjacent each pivotal connection is in its lowermost position said resilient covering is less taut than when said buttocks support is in its uppermost position.

REFERENCES:
patent: 2450654 (1948-10-01), Gleitsman et al.
patent: 2725096 (1955-11-01), Granby
patent: 3643997 (1972-02-01), Gilbert et al.
patent: 3744844 (1973-07-01), Nomaki et al.
patent: 3807796 (1974-04-01), Wirges
patent: 3902754 (1975-09-01), Braeuning

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