Patent attributes
A chopper pump including a drive section having a drive shaft, and a housing coupled to the drive section and having an inlet, an outlet, and an internal cavity arranged between the inlet and the outlet. The chopper pump further includes an impeller received within the internal cavity and coupled to the drive shaft for rotation therewith. The impeller includes a recess formed therein. The chopper pump further includes a cutting insert received within the recess of the impeller. The cutting insert includes a cutting groove axially recessed into the cutting insert. The chopper pump further includes a cutting plate coupled to the housing within the internal cavity. The cutting plate includes a cutting extension that extends radially inward. Rotation of the impeller rotates the cutting blade past the cutting extension.