A dishwasher system for cleaning dishes may include at least one rack configured to receive a silverware basket, the basket including a plurality of partitions creating a plurality of cavities within the basket for receiving utensils for washing, where each cavity includes a separate and distinct base at a bottom of the basket that is vertically movable within the cavity, a camshaft fixed to the rack and operable by a gearbox configured to rotate the camshaft with respect to the rack, the camshaft arranged below the silverware basket, and a plurality of cams extending along the camshaft, at least one cam being arranged below each cavity, wherein upon rotation of the camshaft by the gearbox, each cam affects the height of the respective base to allow the utensils in the respective cavity to be intermittently lifted and exposed to spray from sprayers within the dishwasher.

A dishwasher may utilize a multi-level dishwasher rack that in some instances may be reconfigurable into different configurations to optimize the rack for different types and/or combinations of utensils. A movable divider may be used in some instances to selectively expose a deep portion of a rack, and a drawer may be used in some instances to provide access utensils stored underneath a divider. A movable portion of a bottom of a rack may also be used in some instances to provide different support surfaces in the rack at different elevations. A tubular spray element or another rotatable spray tube may also be positioned relative to a multi-level dishwasher rack in some instances to facilitate concentrated washing of different facing surfaces of different utensils stored in the rack.

A dishwasher may utilize a multi-level dishwasher rack that in some instances may be reconfigurable into different configurations to optimize the rack for different types and/or combinations of utensils. A movable divider may be used in some instances to selectively expose a deep portion of a rack, and a drawer may be used in some instances to provide access utensils stored underneath a divider. A movable portion of a bottom of a rack may also be used in some instances to provide different support surfaces in the rack at different elevations. A tubular spray element or another rotatable spray tube may also be positioned relative to a multi-level dishwasher rack in some instances to facilitate concentrated washing of different facing surfaces of different utensils stored in the rack.

A wash arm assembly may include wash arm having a tubular connection portion and a tubular receiving means for receiving the tubular connection portion. The tubular connection portion may include a first guiding surface and a second guiding surface, and the tubular receiving means may include a third guiding surface and a fourth guiding surface. The first guiding surface may be aligned to the third guiding surface and the second guiding surface may be aligned to the fourth guiding surface when the tubular connection portion is inserted in the tubular receiving means. The first, second, third and fourth guiding surfaces may be arranged to guide the tubular connection portion and the tubular receiving means into alignment with each other upon rotation of the wash arm. A dishwasher including the wash arm assembly may also be provided.

A wash arm assembly may include wash arm having a tubular connection portion and a tubular receiving means for receiving the tubular connection portion. The tubular connection portion may include a first guiding surface and a second guiding surface, and the tubular receiving means may include a third guiding surface and a fourth guiding surface. The first guiding surface may be aligned to the third guiding surface and the second guiding surface may be aligned to the fourth guiding surface when the tubular connection portion is inserted in the tubular receiving means. The first, second, third and fourth guiding surfaces may be arranged to guide the tubular connection portion and the tubular receiving means into alignment with each other upon rotation of the wash arm. A dishwasher including the wash arm assembly may also be provided.

A dishwasher appliance includes a tub defining a wash chamber for receipt of articles for washing and a third rack assembly slidably positioned within the wash chamber and configured for movement along the transverse direction. The third rack assembly includes a perimeter support wire and a flat floor suspended from the perimeter support wire, the flat floor being formed from interwoven floor wire and defining a floor width that is greater than 70% of a tub width of the tub. The diameter of the perimeter support wire is about 0.17 inches, the diameter of the floor wire is about 0.06 inches, and both the perimeter support wire and the floor wire are formed from stainless steel or nylon-coated metal.

A dishwasher appliance includes a tub defining a wash chamber for receipt of articles for washing and a third rack assembly slidably positioned within the wash chamber and configured for movement along the transverse direction. The third rack assembly includes a perimeter support wire and a flat floor suspended from the perimeter support wire, the flat floor being formed from interwoven floor wire and defining a floor width that is greater than 70% of a tub width of the tub. The diameter of the perimeter support wire is about 0.17 inches, the diameter of the floor wire is about 0.06 inches, and both the perimeter support wire and the floor wire are formed from stainless steel or nylon-coated metal.

A tubular spray element for a dishwasher is rotatably supported and/or supplied with fluid at an intermediate location along the length of the tubular spray element, such that least one aperture that directs fluid into a wash tub is disposed on each side of the intermediate location. In addition, a tubular spray element drive may be positioned externally from the wash tub and mechanically coupled to the tubular spray element through a shaft seal such that the fluid supply to the tubular spray element can be entirely within the wash tub.

A tubular spray element for a dishwasher is rotatably supported and/or supplied with fluid at an intermediate location along the length of the tubular spray element, such that least one aperture that directs fluid into a wash tub is disposed on each side of the intermediate location. In addition, a tubular spray element drive may be positioned externally from the wash tub and mechanically coupled to the tubular spray element through a shaft seal such that the fluid supply to the tubular spray element can be entirely within the wash tub.

A dishwasher with a tub that at least partially defines a treating chamber with an access opening, a closure moveable relative to the tub to selectively open and close the access opening, a lower dish holder located within the treating chamber, a middle dish holder located within the treating chamber above the lower dish holder, and an upper dish holder located within the treating chamber above the middle dish holder and having container supports defining a support surface.