Pump and method

Details Pump and method Pump and method

2006-11-30

2009-08-04

Freay, Charles G (Department: 3746)

Pumps

Motor driven

Pump within rotary working member

C417S355000, C417S423700, C417S423120, C415S071000, C415S072000, C415S110000, C415S111000

Reexamination Certificate

active

07568896

ABSTRACT:
A pump for moving a liquid including a stator and a rotor which rotates to move at least one helical pumping member. The rotor in rotation is radially supported relative to the stator only by a layer of liquid maintained between the rotor and stator by rotor rotation.

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