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US 11,382,485 B2Granted
Blade and pump impeller assembly for a dishwasher
AssigneeWhirlpool Corporation
InventorsPritish Roy, Todd Michael Jozwiak, John Joseph Burns
Life of this patent
Estimating the term…
Abstract
A dishwasher comprising a chassis, a tub supported by the chassis and at least partially defining a treating chamber, and a pump that circulates wash liquid in the treating chamber. The pump has an impeller that has a cover, a base with an axis of rotation, and at least one fin protruding from the base. The impeller also has a cap removably coupled to the impeller and at least one blade integrally formed with the cap.
Claims15
A dishwasher comprising:
- a chassis;
- a tub supported by the chassis and at least partially defining a treating chamber;
- a recirculation pump for circulating wash liquid in the treating chamber comprising;
- a cylindrical impeller having a base with an axis of rotation and with at least one fin protruding from the base in a radial direction;
- the base further comprising one or more securing elements positioned adjacent the at least one fin and protruding radially from the base;
- a cylindrical cap having an upper portion comprising at a plurality of blades extending around a periphery of the cap and a profile of the plurality of blades comprising a sinusoidal shape, and wherein each of the plurality of blades has an outwardly arched profile and the plurality of the blades is integrally formed with the cylindrical cap, and, the cylindrical cap further comprises a lower portion comprising one or more mounting apertures complimentary in shape to the one or more securing elements on the base for removably coupling the cap to the impeller;
- wherein the cap press fits over the impeller such that the one or more securing elements engage the one or more mounting apertures in the cap and securely mounts the cap to the impeller.
4 more elements
Dependencies are inferred from the claim text.