Pumps – Motor driven – Electric or magnetic motor
Reexamination Certificate
2004-10-15
2010-06-01
Freay, Charles G (Department: 3746)
Pumps
Motor driven
Electric or magnetic motor
C417S423100, C415S172100, C415S170100, C604S891100
Reexamination Certificate
active
07726955
ABSTRACT:
A pump system having a pump module (10) comprising a stator housing (28) with a chamber (30), a rotor (32) rotatably and axially slidably received in the chamber and comprising a first axial extension (46) with a liquid supply channel (50) and a second axial extension with a liquid supply channel (52), the first and second axial extensions having different diameters, and first and second sealing rings (54, 56), mounted around the first and second axial extensions.
REFERENCES:
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patent: 6179596 (2001-01-01), Weisener et al.
patent: 2009/0123309 (2009-05-01), Hilber et al.
Hilber Josef
Ryser Peter
Straessler Sigfrid
Bertheaud Peter J
Freay Charles G
Saliwanchik, LLoyd & Saliwanchik
Sensile Pat AG
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