Liquid sample collector device
US4346613A · kind A · utility
Inventors
Key dates
| Filing date | Nov 18, 1980 |
| Grant date | Aug 31, 1982 |
| Priority date | — |
| Expiry date | Nov 18, 2000 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01L3/5082
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A collector device for collecting, metering and holding a small sample of liquid, e.g. a drop of blood taken from a finger prick, comprises a vessel provided with an opening closed by a plug, and a screwthreaded cap having a protruding spigot which, when the cap is screwed fully onto the vessel, enters the opening and pushes the sliding plug down into the interior of the vessel. The plug is formed at its outer end with an outwardly facing recess, e.g. part-spherical, and the spigot is formed at its end which enters the opening with a tapering conical formation adapted to enter the recess. In use, with the cap removed the recess is filled with a quantity of liquid, the cap is then partly replaced to cause the spigot to abut the end of the plug so that its conical formation enters the recess and displaces excess liquid therefrom, trapping a metered sample of liquid of predetermined volume, less than the volume of the recess, in the space defined between the abutted ends of the plug and spigot. The cap is then screwed fully home causing the spigot to push the plug down into the vessel, thus transferring the metered liquid sample into the vessel whose opening is now closed by the spigo…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.