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Back support assembly for the back of a chair

  • US 9,687,079 B1
  • Filed: 04/25/2016
  • Issued: 06/27/2017
  • Est. Priority Date: 04/25/2016
  • Status: Active Grant
First Claim
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1. A chair adapted to rock back and forth and comprising:

  • a seat to support the weight of a user seated in the chair;

    a base coupled to the seat to hold the seat above the ground; and

    a back standing upwardly from said seat to support the back of the user, said back coupled to said seat so that said back and said seat tilt back and forth with one another relative to said base when the chair rocks back and forth, wherein the back of said chair includes;

    a front having first and opposite ends;

    a rear having first and opposite ends and lying opposite and separated from said front by a gap, the respective first ends of the front and the rear of the back of said chair being pivotally coupled to one another, such that said front is rotatable relative to said rear,a back support pushing arm having first and opposite ends and being pivotally connected at the first end thereof to the rear of the back of said chair, said back support pushing arm being located at a first position with respect to the front of the back of said chair at which to apply a pushing force to said front when the seat and the back of said chair tilt forwards to cause the front of the back of said chair to rotate in a first direction away from the rear of the back of said chair and towards the back of the user, whereby the gap between the front and the rear of said back has a first size,said back support pushing arm rotating at the first end thereof with respect to the front of the back of said chair from said first position to a second position when the user leans back and applies a pressure against the back of the chair, the seat and the back of the chair tilt back, and the front of the back of said chair rotates in an opposite direction towards the rear of the back of said chair, whereby the first size of the gap between the front and the rear of said back is reduced, andwherein the back of the chair also includes a force generating strap standing upwardly within said back and lying in contact with said back support pushing arm for urging said back support pushing arm to rotate at the first end thereof from said second position to said first position at which to apply said pushing force to the front of the back of said chair when the seat and the back of said chair tilt forwards.

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