Drum mounted, on-demand fluid transfer pump
US10808687B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 29, 2018 |
| Grant date | Oct 20, 2020 |
| Priority date | — |
| Expiry date | Aug 29, 2038 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04D15/0209
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An on-demand fluid transfer pump includes a power head removably connectable on top of a stem that is removably connectable to a fluid supply. The power head includes an electric pump and a flow control unit configured to automatically switch the electric pump on and off. The flow control unit includes a magnetic sensor and the stem includes a suction tube, a fluid chamber, a plunger chamber, and a magnetic plunger reciprocable within the plunger chamber in response to pressure changes in the fluid chamber. The magnetic plunger is biased to deactuate the magnetic sensor to switch on the electric pump to pressurize the fluid supply for delivery to the fluid dispenser. The magnetic plunger is pushed when pressure in the fluid chamber rises to thereby actuate the magnetic sensor to switch off the electric pump.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.