| 摘要 |
966,030. Centrifugal pumps. MOWID ANSTALT. May 30, 1961 [June 8, 1960], No. 19539/61. Heading F1C. [Also in Division H2] A centrifugal pump comprising a sealed electric motor compartment 2, an oil-filled sealing chamber 7 and a pump compartment 8 is characterized in that the motor compartment extends beyond the sealing chamber into the pump compartment so that a surface of it is cooled by the liquid in the pump compartment. The surface 15 may be provided with cooling fins.
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