Lift pump guard
US6227806A · kind A · utility
8Cited by
5References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 10, 1999 |
| Grant date | May 8, 2001 |
| Priority date | — |
| Expiry date | Sep 10, 2019 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04D15/0236
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Lift pump guard for a pump operable by an electrical motor. The lift pump guard monitors variable parameters and actuates a relay to electrically terminate operation of the pump motor when the pump is dry running. Also a method of protecting a pump from dry running compares a measured parameter to a predetermined value and terminates operation based on the comparison.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.