Pumps – Motor driven – Electric or magnetic motor
Reexamination Certificate
2006-07-26
2011-12-20
Freay, Charles (Department: 3746)
Pumps
Motor driven
Electric or magnetic motor
Reexamination Certificate
active
08079833
ABSTRACT:
An electric motor (1) having a coaxially associated pump (6) for a coolant circuit, in particular in a system with temperature transfer and/or heat transfer, in which a shaft assembly (5) transmits a torque from the electric motor (1) to at least one impeller (8) arranged in the pump housing (7) within housing parts (7, 10) in the form of a hermetically sealed pressure enclosure, and a flywheel (12) is arranged between the electric motor (1) and the pump housing (7). All of the rotating parts are arranged within a hermetically sealed motor/pump unit, and the motor/pump unit is filled with fluid. The flywheel (12) comprises a flywheel body (13) made from a high-strength material having a large number of cavities (16, 17) with inserts (16, 17) formed of or containing a heavy metal having a density greater than 11.0 kg/dm3arranged in the cavities.
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German Search Report dated Jun. 26, 2006, including an English translation of relevant portion (Four (4) pages).
Brecht Bernhard
Bruhns Uwe
Graber Ralf
Hartmann Harald
Bayou Amene
Crowell & Moring LLP
Freay Charles
KSB Aktiengesellschaft
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