An adjusting apparatus for the backrest of a chair

Details An adjusting apparatus for the backrest of a chair An adjusting apparatus for the backrest of a chair

A - Human Necessities

47

C

A47C 7/00 (2006.01) A47C 7/46 (2006.01) A47C 31/12 (2006.01) B60N 2/66 (2006.01)

Patent

CA 2313719

An adjusting apparatus for the backrest of a chair comprising an adjusting member connected to and controlled the backrest, a backrest board body having a top and bottom ends at the sides thereof, rails slidably inserted into the backrest, a first guiding cable connected to the top and bottom ends of the board body, a second and a third guiding cables being respectively secured at one end of the board body, thereby the adjusting of the first cable by means of the adjusting member causes the board body to bend or curve, and to release the second and third guiding cable causes an up and down displacement of the board body with respect to the rails, and the board body is adjusted to comfortably support the user in a laying position.

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