Pumps – Motor driven – Electric or magnetic motor
Reexamination Certificate
2006-02-14
2006-02-14
Solak, Timothy P. (Department: 3746)
Pumps
Motor driven
Electric or magnetic motor
C417S423110
Reexamination Certificate
active
06997688
ABSTRACT:
A centrifugal pump includes a housing having a housing cavity, an inlet, and an outlet. A pump shaft is located within the housing cavity. A radial bearing coaxially surrounds the pump shaft. The shaft and the radial bearing are rotatable with respect to one another. An impeller is positioned to receive a fluid from the inlet and to exhaust the fluid to the outlet. The impeller has a first magnet assembly. A rotor has a second magnet assembly spaced apart from the first magnet assembly. A primary container is interposed between the impeller and the rotor. The primary container is arranged to contain a pumped fluid. A drive shaft is associated with the rotor for rotating the rotor. A secondary container contains the pumped fluid if the primary container leaks. The secondary container supports a generally dry-running seal (e.g., non-lubricated seal) associated with the drive shaft. The seal is disposed axially from the primary container and has a stationary portion and a rotating portion.
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Brown Jeffrey S.
Klein Manfred P.
McAloon Scott A.
Phelps Peter E.
Ward Brian C.
Innovative Mag-Drive, LLC
Solak Timothy P.
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