Height adjustable high chair

Claim 1

An adjustable high chair for use by a child comprising, in combination: a base having a generally horizontal portion with a central extent and positionable on a floor; a chair adapted to receive a child thereon, the chair having a top and a bottom and a seat portion, a back portion, and arm portions coupled with respect thereto, the arm portions each having an upper support surface for receipt of a tray and parallel side faces with a row of recesses to effect adjustable engagement of a tray with respect to the chair, the row or recesses having forward and rearward ends and with end stops located at the forward and rearward ends of the recesses, the chair being operatively coupled to the base; height adjustment mechanisms operatively coupling the base and the chair, the mechanisms including tubes extending upwardly from the base at an angle with respect to the vertical with holes for height adjustment purposes, tubular bearing surfaces associated with the back portion of the chair slidably receiving the tubes, latch means coupling the tubes and bearing surfaces for selective engagement therebetween, and an operator-controlled handle adjacent to the top of the chair to effect selective engagement and disengagement of the latch means with respect to the holes to vary the elevation of the chair with respect to the base and to laterally shift the chair with respect to the base for moving the chair toward a more stable position over the central extent of the base as the chair is raised; and a tray adjustably secured with respect to the arm portions of the chair, the tray having a front edge and a rear edge and operator-controlled pivotable handles with fingers spring urged into engagement with the recesses of the arm portions but movable out of engagement with the recesses by an operator in order to allow sliding the tray among a plurality of positions as well as outwardly of the end stops for disengagement with the chair, the tray having a central reciprocable handle extending outwardly from the front edge of the tray movable by an operator, rods coupling the reciprocal handle and pivotable handles to move the pivotable handles to an extent sufficient whereby the fingers will move out of the recesses to allow adjustment of the tray with respect to the chair but insufficient for the fingers to clear the end stops to thereby preclude removal of the tray from the chair.