Device, method and apparatus for implementing the method, for dosing at least a particular constituent in a product sample
US6582912B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 14, 2000 |
| Grant date | Jun 24, 2003 |
| Priority date | — |
| Expiry date | Aug 14, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T436/25
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A device for dosing at least a particular constituent in a product sample has a receptacle and a cover assembled to form a closed container having a vertical axis. The receptacle and cover bear coaxial cylindrical walls defining concentric annular chambers inside the container, the walls separating chambers each having an opening, the cover and the container being rotatable relative to each other about the vertical axis, said openings being placed in a predetermined manner so that by relative displacement of the walls, the openings are positioned in a straight line or offset to communicate, or isolate said successive chambers. A method for using such a device and an apparatus for implementing said method are disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.