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Dishwasher rack lift system

  • US 10,299,657 B2
  • Filed: 02/19/2018
  • Issued: 05/28/2019
  • Est. Priority Date: 12/27/2016
  • Status: Active Grant
First Claim
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1. A dish washing appliance comprising:

  • a dishwasher tub defining a wash cavity;

    one or more dishwasher racks positioned within the wash cavity of the dishwasher tub, at least one of the dishwasher racks is moveable between a stowed position and a deployed position, wherein the deployed position is different from the stowed position;

    at least one threaded member;

    one or more slides coupling the at least one dishwasher rack to the at least one threaded member, wherein a portion of the one or more slides extends between the stowed position and the deployed position with the at least one dishwasher rack;

    at least one motor;

    at least one worm screw located within the wash cavity and operably coupled to the at least one motor;

    the at least one threaded member and the at least one dishwasher rack connected to the at least one worm screw, wherein the at least one threaded member is in a fixed rotational position when longitudinally threaded along a length of the at least one worm screw;

    a rack support fixed to the at least one threaded member, wherein the rack support couples the one or more slides to the at least one threaded member;

    wherein the at least one threaded member, the one or more slides, the rack support, and the at least one dishwasher rack is positionable between a first height and a second height along the length of the at least one worm screw when the at least one dishwasher rack is in the deployed position, wherein the second height is at a higher vertical elevation than the first height; and

    wherein the at least one threaded member, the at least one worm screw, and the rack support are stowed within the dishwasher tub in both the first height and the second height of the at least one dishwasher rack when in the deployed position.

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