Automatic fluid injector, and magazine therefor
US4121465A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 21, 1977 |
| Grant date | Oct 24, 1978 |
| Priority date | — |
| Expiry date | Jul 21, 1997 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N35/1079
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A new and improved magazine for use in automatic fluid injectors, and novel fluid injector for use in accurately measuring and injecting preselected quantitites of fluid specimens, or samples, into various media, e.g., a receptacle or septum inlet of a modern analytical instrument. In its preferred aspects, the invention is comprised of a new and novel magazine-injector combination. The combination is comprised of (a) a fluid injector sub-assembly, inclusive of a barrel on one end of which is mounted a hollow needle providing an opening from the dispensing end of said needle through said needle and barrel, and on the other end valve means for opening the barrel to permit the ingress of fluid specimen into said barrel and needle and for closure of said barrel to interrupt the flow of fluid specimen through said barrel and needle, (b) an injector feed sub-assembly, inclusive of a probe assembly comprising a gas supply conduit with gas inlet and gas outlet means, a fluid specimen supply conduit with fluid specimen inlet means, and outlet means connected to the barrel and operatively associated with the valve means of said fluid injector sub-assembly, and means for puncturing the septu…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.