Level sensing apparatus
US10994984B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 21, 2019 |
| Grant date | May 4, 2021 |
| Priority date | — |
| Expiry date | Aug 2, 2039 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W30/80
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
An apparatus for dispensing liquid from a container, and for monitoring the level of liquid within said container, comprises a container for storing liquid to be dispensed; and a conduit, the conduit comprising: a feed tube extending from the container to an appliance; a dip tube extending in the container to the bottom of the container; a liquid supply channel extending through the feed tube and dip tube and having an open first end defined by a lower end of the dip tube, which, in use, is arranged to be immersed in said liquid in said container, and a second end arranged, in use, to extend outside of said container; and a pressure measurement channel branching from the feed tube at a point located between said first and second ends of the liquid supply channel. The apparatus further comprises a pressure transducer in fluid communication with said pressure measurement channel, and a means to draw liquid from the first end of the liquid supply channel to dispense liquid from the second end of the liquid supply channel. The pressure measurement channel branches from the feed tube at a fixed height relative to the bottom of the dip tube.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.