Tilting chair, especially office chair

Details Tilting chair, especially office chair Tilting chair, especially office chair

1986-12-23

1988-08-16

Dorner, Kenneth J.

Chairs and seats

Back movement resiliently opposed in operating position

Back adjusts independent of seat

297304, 297306, 297316, A47C 1032

Patent

active

047639504

ABSTRACT:
To permit backward rocking of the back or back-and-seat of a chair, independently of the previously tilted-back position of the chair, a comfort position memory structure is provided which includes a manually adjustable variable stop structure formed by a cam curve (37) with a serrated or toothed surface, engaged by a stop element (41) coupled to the seat (17, 19). The cam (37) is manually rotatable, by being secured to an externally user-accessible adjustment segment (45). To set a predetermined tilted position, the user tilts back on the chair, and then permits the chair to tilt forward to a comfortable position, and then rotates the manually engageable segment (45) until a tooth (39) of the cam disk (37) is engaged by the stop (41). A spring (32) biasses the chair forwardly and against the stop, unless tilted back by the user.

REFERENCES:
patent: 1359145 (1920-11-01), Atwood
patent: 1368469 (1921-02-01), Atwood
patent: 2139028 (1938-12-01), Mensendicck et al.
patent: 2321385 (1943-06-01), Herold
patent: 4099775 (1978-07-01), Mizelle
patent: 4629249 (1986-12-01), Yamaguchi
patent: 4682814 (1987-07-01), Hansen

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