Differential pressure switch
US7855345B2 · kind B2 · utility
5Cited by
15References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 19, 2007 |
| Grant date | Dec 21, 2010 |
| Priority date | — |
| Expiry date | Sep 19, 2028 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04D15/0218
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The invention relates to a field adjustable pressure switch that incorporates a manually adjustable differential to set the pressure level for the trip point for the pressure switch used in conjunction with a submersible sump pump system requiring trip levels corresponding to the desired water level in the sump well for operation of the pump motor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.