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.
Patent No.:
Date of Patent:
Jul. 03, 2007
Filed:
Dec. 05, 2005
Jay D. Martin, Oklahoma City, OK (US);
Jay D. Martin, Oklahoma City, OK (US);
Little Giant Pump Company, Oklahoma City, OK (US);
Abstract
A grinder pump with a self aligning cutter assembly, the grinder pump having an inlet port, a drive shaft and a cutter assembly, the cutter assembly comprising a rotary cutter and a stationary, annular cutter. The rotary cutter is supported for rotation by the drive shaft, and the annular cutter is supported in the inlet port. The rotary cutter has a pair of primary knife members with knife edges, and the annular cutter is supported in the inlet port, the annular cutter having a central bore in which a plurality of internal cutting edges are formed. The rotary cutter is supported in the central bore so its primary knife members are rotated in operational cutting engagement with the internal cutting edges by the drive shaft. The annular cutter is provided a limited range of radial movement and is positioned within the range of movement by the rotary cutter.