Grinder pump cutter assembly
OwnerSteven M. Keenerinventor
Life of this patent
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Abstract
A grinder pump cutter assembly having a pair of cutting blades mounted on the cutter disk which extend at a hook angle to substantially the center of the disk. The blade is multi-surfaced, with the surfaces thereof being angled toward the periphery of the disk to break up centralized matter and disperse it into cutting engagement between the disk and cutter ring. Both the disk and cutter ring are also characterized by bores passing through juxtaposed circumferences thereof. The bores each have a hook angle associated therewith to define the sharpness of the cutting edges and to further provide a turbulence of self-purging action within the bores.
Claims9
In a grinder pump, the improvement of a cutter assembly, comprising:
- a cutter ring having a plurality of bores extending through an inner circumference thereof, the centers of said bores lying on a circle of greater radius than the radius of said inner circumference of said ring;
- and
- a disk received by and rotatable within said cutter ring, said disk being maintained upon a shaft and having a pair of blades depending therefrom, said blades extending from an outer circumference of said disk inwardly to said shaft, said disk having a pair of bores passing through said outer circumference of said disk, the centers of said pair of bores lying on a circle having a radius less than the radius of said outer circumference of said disk.
A cutter assembly for a grinder pump, comprising:
- a cutter ring having a plurality of bores about an inner periphery thereof;
- and
- a disk maintained upon a shaft and rotatable within said ring, said disk having a pair of bores about the circumference thereof and further having a pair of blades extending from the bottom thereof, each said blade having a back surface sloped toward said circumference of said disk and beginning at said shaft, wherein said blades are maintained upon said disk at a hook angle, and wherein each said blade further includes primary and secondary top surfaces intersecting said back surface and sloping toward the circumference of said disk.
Dependencies are inferred from the claim text.