Tool, container and method for extracting liquid
US10928234B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 28, 2017 |
| Grant date | Feb 23, 2021 |
| Priority date | — |
| Expiry date | Feb 23, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F11/16
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A tool, container and method for extracting a liquid; the tool for extracting a liquid comprises: a pressure-changing means, a liquid-reservoir space, a liquid-drawing channel and an outflow channel; the pressure-changing means comprises a cylinder and a piston capable of moving back and forth in the cylinder; the back-and-forth movement of the piston causes positive and negative pressure changes in the cylinder; a start end of the liquid-reservoir space is in communication with the inside of the cylinder; a temporary liquid-storage groove or an opening is provided on a wall of the cylinder at a horizontal position below a port of the start end of the liquid-reservoir space; the volume of the maximum sealing portion of the cylinder is greater than the volume of the liquid-reservoir space; the liquid-drawing channel communicates with the liquid-reservoir space; the outflow channel communicates with a tail end of the liquid-reservoir space.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.