| 摘要 |
A pump device ( 10 a, 10 b, 10 c) includes means for both transferring rotational momentum to the fluid by viscous forces, and imparting centrifugal forces to the fluid. The pump ( 10 a, 10 b) can include a wiper ( 44 ) extending partially across at least one rotatable disc surface ( 48, 48 b, 48 c) of at least one rotatable disc ( 52, 52 b, 52 c). The pump ( 10 c) can include a rotatable shaft ( 150 ) with a hollow cavity ( 154 ) extending from one end to at least one slot ( 158 ) extending radially from the hollow cavity.
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