Submerged pump control
US4171186A · kind A · utility
15Cited by
10References
1Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 12, 1977 |
| Grant date | Oct 16, 1979 |
| Priority date | — |
| Expiry date | Aug 12, 1997 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04D15/0218
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A solenoid actuated mechanical relay is encapsulated in electrical insulating resin in a housing on a tubular column extending upward from a submerged pump unit in the bottom of a tank, to energize the pump motor. Float switches mounted on said housing are connected to the relay to control the pump in accordance with a liquid level in the tank.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.