Pumping device
US11313108B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Sep 28, 2020 |
| Grant date | Apr 26, 2022 |
| Priority date | — |
| Expiry date | Jan 6, 2041 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/8622
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A pumping device has a container, an inlet pipe, a float barrel, and a discharging pipe. The container has a box containing water and a first gas, and a pressure gauge and a check valve mounted to the box. The inlet pipe connects to a water supply and has a second section erectly disposed within the box and communicating with an inside of the box. The float barrel is disposed within the box, contains a second gas, and has an opening. The second section is mounted through the opening. The discharging pipe has two opposite ends respectively communicating with a water reservoir and the inside of the box. The first gas has a pressure larger than 1 atm. The second gas has a pressure less than 1 atm. Water enters the float barrel. A water level inside the float barrel is higher than a water level inside the box.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.