US Patent No. 10,655,266

LINT PROCESSING FLUID PUMP FOR A LAUNDRY APPLIANCE


Patent No. 10,655,266
Issue Date May 19, 2020
Title Lint Processing Fluid Pump For A Laundry Appliance
Inventorship Arun Rajendran, St. Joseph, MI (US)
Michael Jon Vriezema, St. Joseph, MI (US)
Assignee Whirlpool Corporation, Benton Harbor, MI (US)

Claim of US Patent No. 10,655,266

1. A lint removal system for a laundry appliance, the lint removal system comprising:a lint disposal assembly adapted to deliver wet lint to a lint disposal area;
an at least partially open impeller disposed within a single processing chamber of a pump casing, the at least partially open impeller operable to deliver a fluid from the lint disposal area to a drain outlet; and
a blade assembly disposed within a cylindrical wall of the single processing chamber, the blade assembly having a rotating blade that is rotationally operable about a rotational axis to process the wet lint from the lint disposal area to define lint particles that are delivered with the fluid to the drain outlet, wherein the blade assembly includes the rotating blade having an outer edge that is generally angled with respect to the rotational axis and slidably engages a filter to process the wet lint, the rotating blade rotating within the filter, wherein the filter includes a generally conical shape that defines a fluid flow area between the filter and the cylindrical wall of the single processing chamber, wherein the generally conical shape of the filter narrows in a direction of the at least partially open impeller to define the fluid flow area as having a cross-sectional area between the generally conical shape of the filter and the cylindrical wall that increases in the direction of the at least partially open impeller to promote a flow of fluid and lint particles in a horizontal direction toward the at least partially open impeller.