Apparatus for regulating the passage and flow-rate of a liquid
US4177018A · kind A · utility
8Cited by
1References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 4, 1978 |
| Grant date | Dec 4, 1979 |
| Priority date | — |
| Expiry date | Jan 4, 1998 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04D15/0072
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A symmetrical, twin centrifugal pump includes a pair of valves mounted about a common shaft. The valves are capable of independent operation thus allowing either or both of the pump elements to operate. A key is also mounted to the shaft to allow overall regulation of the pump by selectively impeding the flow of liquid from the pump inlet to pump outlet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.