Interlocking cushioning mechanism for supporting seat portion an

Details Interlocking cushioning mechanism for supporting seat portion an Interlocking cushioning mechanism for supporting seat portion an

1987-12-01

1989-05-16

Zugel, Francis K.

Chairs and seats

Back movement resiliently opposed in operating position

Back and seat adjust simultaneously

297304, A47C 300

Patent

active

048304310

ABSTRACT:
An interlocking cushioning mechanism for supporting a seat portion and a backrest of a chair in an integrally movable fashion. This mechanism has a primary mounting member secured to an upright support for swivel movement about the vertical axis thereof, slots formed in a portion of the primary mounting member which is located near the upper end of the upright support; a subsidiary mounting member having one end extending upwardly toward the rear of the chair and the other end secured to the slots by means of a shaft; a resilient member such as a spring held between the shaft and the forward end of the primary mounting member so as to cause the shaft to move rearwardly within the slot; a seat portion mounting frame for carrying the seat portion; and a backrest frame secured to the rear of the subsidiary mounting member. The resilient member is mounted by means of a simple mounting structure and the resilient force of the resilient member is altered with a minimal effort.

REFERENCES:
patent: 4451085 (1984-05-01), Franck et al.
patent: 4471994 (1984-09-01), Zund et al.
patent: 4629249 (1986-12-01), Yamaguchi
patent: 4682814 (1987-07-01), Hansen
patent: 4707029 (1987-11-01), Korn

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