Pump with cutting impeller and pre-chopper

Details Pump with cutting impeller and pre-chopper Pump with cutting impeller and pre-chopper

2006-02-16

2010-10-12

Look, Edward (Department: 3745)

Rotary kinetic fluid motors or pumps

With cutter or comminutor for debris in working fluid

C415S169100, C416S19800R

Reexamination Certificate

active

07811051

ABSTRACT:
Pump having a cutting impeller (38), counter knives (40) associated therewith, and a pre-chopper (48) which is driven by a shaft portion (46) that projects axially from the cutting impeller (38), characterised in that the counter knives (40) carry a cutting edge (52) that extends in longitudinal direction of the shaft portion (46).

REFERENCES:
patent: 3128051 (1964-04-01), Smith
patent: 5460483 (1995-10-01), Dorsch
patent: 6190121 (2001-02-01), Hayward et al.
patent: 6224331 (2001-05-01), Hayward et al.
patent: 7125221 (2006-10-01), Dorsch et al.
patent: 2618559 (1977-11-01), None
patent: 57-32097 (1982-02-01), None
patent: 10-503818 (1998-04-01), None
patent: 96/04467 (1996-02-01), None

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