Patent ID: 8191560

Claim:
An upper rack vertical adjustment system for a dishwasher of the type having at least an upper rack and a lower rack, comprising: an upper rack comprising a vertically extending front wall, a back wall, two opposing sidewalls and a bottom wall, said bottom wall including a first portion and a second portion; said second portion rotatably attached to said first portion for movement between a first position in which said second portion is operative to serve as a portion of the bottom wall and a second position in which said second portion is operative to create an extended opening in the bottom wall thereby providing vertical clearance for objects stored in the lower rack; a slidable member having two elongated aims extending therefrom wherein each of said elongated arms comprises a wheel attached at an end of one of said arms; a plate mounted to a portion of said upper rack wherein said slidable member is pivotally mounted to said plate; and a locking mechanism for locking said slidable member in one of several predetermined positions.