Cutting blade assembly
AssigneePentair Flow Technologies, LLC
InventorsShane Robert Vallen, Douglas Richard Rogers
Life of this patent
Estimating the term…
Abstract
A cutting blade assembly including a cutting plate, a plurality of cutting slots formed in the cutting plate, and a cutting hub. The cutting plate includes an axial face and a central opening. The plurality of cutting slots are circumferentially spaced about the central opening. Each of the plurality of cutting slots intersects the axial face and defines a respective axial cutting edge at an intersection of each of plurality of cutting slots and the axial face. Each of the plurality of cutting slots defines a base surface that is nonparallel to the axial face. The cutting hub is positioned in the central opening and has a cutting arm adjacent to the axial face.
Claims20
A cutting blade assembly comprising:
- a cutting plate having an axial face, a radial face, and a central opening;
- a plurality of cutting slots formed in the cutting plate and circumferentially spaced about the central opening, each of the plurality of cutting slots intersecting the axial face and defining a respective axial cutting edge at an intersection of each of the plurality of cutting slots and the axial face, wherein each of the plurality of cutting slots defines a base surface that is nonparallel to the axial face;
- and
- a cutting hub positioned in the central opening, the cutting hub having an axial cutting arm adjacent to the axial face and a radial cutting arm adjacent to the radial face.
A cutting plate for a cutting blade assembly, the cutting plate comprising:
- an axial face;
- a central opening in the axial face;
- a first cutting slot extending from the central opening and having a first axial cutting edge at an intersection of the first cutting slot and the axial face, wherein the first cutting slot defines a landing portion that is parallel to the axial face;
- and
- a second blind cutting slot extending partially into the axial face and having a second cutting edge, the second blind cutting slot being disconnected from the central opening, the second blind cutting slot defining
- a base surface that is nonparallel to the axial face.
A cutting plate for a cutting blade assembly in a pump, the cutting plate comprising:
- an axial face;
- a central opening in the axial face;
- a first cutting slot having a first axial cutting edge at an intersection of the first cutting slot and the axial face, the first cutting slot configured to direct debris from the first axial cutting edge toward the central opening, wherein the first cutting slot defines a landing portion that is parallel to the axial face;
- and
- a second cutting slot having a second cutting edge, wherein the second cutting slot defines a pocket in the axial face of the cutting plate.
Dependencies are inferred from the claim text.