The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Oct. 18, 2022

Filed:

Jul. 02, 2020
Applicant:

Crane Pumps & Systems, Inc., Piqua, OH (US);

Inventors:

Kirk Neer, St. Paris, OH (US);

Alex Crabtree, Englewood, OH (US);

Assignee:

Crane Pumps & Systems, Inc., Piqua, OH (US);

Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
F04D 7/00 (2006.01); B02C 18/00 (2006.01); F04D 29/22 (2006.01); F04D 7/04 (2006.01);
U.S. Cl.
CPC ...
B02C 18/0092 (2013.01); F04D 7/045 (2013.01); F04D 29/2288 (2013.01); B02C 2201/063 (2013.01);
Abstract

A grinder accessory is useful for a pump in a wastewater application. The grinder accessory has a cutter plate and a cutting body that co-act on solids, especially fibriform solids. The cutter plate has first and second planar faces, mounted in an inlet of the pump, with a plurality of through holes and a central aperture. The cutting body is poised atop the first planar face and extends through the central aperture to rotationally couple with a drive shaft of the pump. A central hub of the cutting body has a plurality of arms that extend radially proximate to the first planar face, so that a leading edge of the arms interacts with the through holes on solids passing therethrough. A housing defines a cutting chamber around the cutter plate and the cutting body to protect them and to induce swirling action.


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