Automatic filtration and extraction device and method
US6027638A · kind A · utility
Inventor
Key dates
| Filing date | May 11, 1998 |
| Grant date | Feb 22, 2000 |
| Priority date | — |
| Expiry date | May 11, 2018 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2201/54
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An improved automatic filtration and extraction device is disclosed which comprises a base defining at a top end a cavity area which tapers downwardly and inwardly from the top end to define a chamber for a portion and then defines a plurality of effluent outlets at the bottom end each extending from the chamber to an outer surface of the body. Seals are adapted to each of the effluent outlets and are moveable between a first closed position sealing the effluent outlet and a second open position to allow the passage of effluent through the effluent outlet. A filter is detachably and removably adapted over the cavity area. Various solvents are provided to the cavity area through a solvent provider. A circuit with programmable memory accesses and directs a sequence of events after an initial event. A vacuum connected to each of the effluent outlets each induces effluent flow through an effluent outlet while sealing all other outlets. A removable valve assembly attaches to the sample bottle such that the bottle and valve assembly may be removed as a single unit from the base. An extraction sequence may be manually interrupted for removal of the sample bottle to another station.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.