Chair with a rack-and-pinion assembly for adjusting height...

Details Chair with a rack-and-pinion assembly for adjusting height... Chair with a rack-and-pinion assembly for adjusting height...

2005-05-31

2005-05-31

Cuomo, Peter M. (Department: 3636)

Chairs and seats

Movable bottom

Bottom and back movable as a unit

C297S344200

Reexamination Certificate

active

06899394

ABSTRACT:
A chair includes a seat member having left and right sides formed with left and right leg-holding seats, respectively. Each of the leg-holding seats defines a leg extension bore therethrough. Each of left and right leg units has an elongated front leg extending through the leg extension bore in a respective one of the leg-holding seats. Two racks are respectively fixed to and extend along the length of the front legs. A driven shaft is journalled to a bottom face of the seat member. Two pinions are respectively fixed to opposite ends of the driven shaft, and mesh respectively with the racks. A drive unit drives rotation of the driven shaft, which in turn, results in sliding movement of the seat member along the front legs.

REFERENCES:
patent: 482233 (1892-09-01), Rusin
patent: 537081 (1895-04-01), Starkey
patent: 2599610 (1952-06-01), Clairmonte et al.
patent: 5445432 (1995-08-01), Chien
patent: 6050643 (2000-04-01), Kain et al.
patent: 6161898 (2000-12-01), Brevi
patent: 6302482 (2001-10-01), Moll et al.
patent: 719578 (1942-04-01), None
patent: 0726045 (1996-08-01), None
patent: 1 104 661 (1999-11-01), None
patent: 1-284247 (1989-11-01), None

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