Liquid feeder and chemical analyzer including same
US9492821B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 30, 2014 |
| Grant date | Nov 15, 2016 |
| Priority date | — |
| Expiry date | Jan 30, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2035/00544
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In some examples, a liquid feeding device includes a main flow passage in which a fluid may be fed between an upstream side and a downstream side. A first flow passage may branch from the main flow passage, and may include a narrow flow passage at a terminal end portion, having a smaller cross-sectional area than the first flow passage. A liquid feeding mechanism may feed the fluid to the main flow passage and the first flow passage. The narrow flow passage may suppress the fluid from leaking from first flow passage. Thus, the liquid feeding device may quantitatively determine a first volume of the fluid by filling the first flow passage with the fluid, and subsequently feeding the quantitatively determined fluid back to the main flow passage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.