Controlled additive/reactant delivery system
US7700046B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Sep 14, 2004 |
| Grant date | Apr 20, 2010 |
| Priority date | — |
| Expiry date | Dec 4, 2027 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01L2400/049
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A system for controlled delivery of a predetermined volume of an additive (e.g., a liquid, solid, etc.) to a vacuum sealed container is provided and includes a delivery device that includes a housing having a chamber defined therein for holding the predetermined volume of additive and a piston or the like that is axially moveable within the chamber. The system includes a connector that is detachably connected to or formed as integral part of the delivery device. The connector has a hollow piercing element for piercing through a stopper of the vacuum sealed container. The attached apparatus and connector are mated with the vacuum sealed tube for delivering the additive such that the piercing element pierces through the stopper and one end of the element is in fluid communication with an interior of the container causing the chamber in the apparatus to be exposed to the vacuum resulting in the predetermined volume of additive being drawn from chamber through the connector and into the container without releasing a vacuum seal that exists between the stopper and container.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.