Cutter assembly for a grinder pump

Solid material comminution or disintegration – Apparatus – Including means applying fluid to material

Reexamination Certificate

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Details

C241S089400, C241S258000, C415S121100

Reexamination Certificate

active

11037621

ABSTRACT:
A cutting assembly for a grinder pump comprised of a rotary cutter rotatable against an opposing plate cutter. The cutting edges of the plate cutter include a plurality of V-slice cutting teeth, which create bridging spaces to pinch material which is being sucked in to ports and begin cutting along the V-slice and then for cut material to pass through and onward into the volute of the pump. The rotary cutter has a ground edge with a rake angle which shears the gathered material in cooperation with the cutting edges of the plate cutter. A grinder pump including the cutter assembly is also disclosed.

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Hydromatic HPGR200 Submersable Sewage Grinder Pump 2 pages product lit from web site http://www.hydromatic.com/grinders/hpgr—grinder.html printed Apr. 19, 2005, known ˜Sep. 2004.
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ABS Wastewater application brochure p. 9 and p. 5, downloaded from http://www.abspumps.com/absgroup/ and printed Apr. 19, 2005. Original publication date unknown.

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