Foldable stool

  • US 4,630,861 A
  • Filed: 10/28/1985
  • Issued: 12/23/1986
  • Est. Priority Date: 10/28/1985
  • Status: Expired due to Term
First Claim
Patent Images

1. In connection with a folding stool movable between an upright and a folded condition, said stool having:

  • first and second nonfolding side walls,a folding top wall including first and second nonfolding top half-walls and hinge means connecting these top half-walls to each other,first and second folding end walls, each including first and second nonfolding half-walls and each including hinge means connecting its first and second end half-walls to each other,hinge means conneting each first half-wall to said first side wall, andhinge means connecting each second half-wall to said second side wall;

    the improvement wherein;

    A. the top wall is provided with(1) a lip extending outwardly around the outer horizontal periphery of the top wall as the top wall is viewed when the stool is in its upright condition with the top half-walls lying in a common horizontal plane, and(2) a shoulder below and spaced inwardly of said lip around the outer periphery of the top wall;

    B. said lip is so positioned as to lie in supported relation to the uppermost surface of each of said side walls and each of said end half-walls when said stool is in its upright condition;

    C. said shoulder is so positioned as to lie in inward-movement-preventing contact with the uppermost inner edge of each of said side and end half-walls when said stool is in its upright condition;

    D. each of said top half walls is movable into face-to-face relation with its hinged-together counterpart and said side walls being movable into parallel, spaced-apart relation to each other and in adjacent, closely spaced relation to said folded end walls to accomplish movement of said stool to said folded condition;

    E. each of said end half-walls is movable into face-to-face relation with its hinged-together counterpart to lie entirely between the side walls;

    F. said top wall shoulder is effective around substantially the entire periphery of the top wall to be in contacting relation with the top inner edge surface of each of said side walls and each of said end walls when said stool is in its upright condition;

    G. those side-wall-contacting portions of the top wall shoulder in contact with each of said side walls each define a vertical plane coincident with substantially the entire top inner edge surface of such side wall when the stool is in its upright condition;

    H. those end-wall-contacting portions of the top wall shoulder in contact with each of the folding end walls each define a vertical plane coincident with the top inner edge surface of its contacted end wall over a central hinged portion of such end wall when said stool is in its upright condition, only so much of said end-wall-contacting shoulder portions as are in adjacent relation to the side-wall-contacting shoulder portions being relieved as is needed to allow those portions of the top wall shoulder adjacent the hinged edges of the first and second end half-walls of each end wall to initially clear the tops of those end-walls as the stool is moved from upright toward folded condition; and

    I. said top wall shoulder is relieved by providing four ramps which are formed by cutting away all four ends of the side-wall-contacting portions of the top wall shoulder by a dimension at least approximately equal to the depth of the shoulder and cutting away all four adjacent end-wall-contacting portions of the top wall shoulder so that such ramps taper into the end-wall-contacting portions of the top wall shoulder at a point at least approximately eight times the thickness of the shoulder from the side walls when the stool is in an upright condition.

View all claims
    ×
    ×

    Thank you for your feedback

    ×
    ×