Sump system
US5152670A · kind A · utility
Inventor
Key dates
| Filing date | Apr 19, 1990 |
| Grant date | Oct 6, 1992 |
| Priority date | — |
| Expiry date | Apr 19, 2010 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04D15/0218
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A sump apparatus for use in a marine vessel comprises a tank, a pump communicating with the tank for evacuating the tank, and a pump control mechanism for energizing the pump in response to a predetermined height of water in the tank. That mechanism comprises a housing defining an air chamber, a switch disposed in the chamber and operably connected to the pump, a switch actuating diaphragm mounted in the housing for actuating the switch. An air vent conduit communicates with the chamber, and a flow restrictor desensitizes the diaphragm relative to momentary changes in the water pressure acting on the diaphragm. The pump control mechanism can be mounted in a side wall of the tank, or to a removable top lid of the tank so as to be removable with that lid. The pump control mechanism may include a timer operably connected to the switch and pump for deactivating the pump after a predetermined period of pump operation sufficient to evacuate the tank.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.