| 摘要 |
906,430. Intermeshing screw pumps. IMOINDUSTRI A.B. Feb. 4, 1960 [Feb. 4, 1959], No. 4037/60. Class 110 (2). An intermeshing screw pump is provided with shallow recesses 18, 19 on the inside of the pump casing adjacent the inlet 5 to facilitate filling of the pumping chambers and to reduce noise and vibrations, the recesses being bounded by curved surfaces such as 20<SP>1</SP>, 21<SP>1</SP> for mathematical details of which the Specification should be referred to. |
