Needle interface apparatus
US5339701A · kind A · utility
3Cited by
9References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 30, 1993 |
| Grant date | Aug 23, 1994 |
| Priority date | — |
| Expiry date | Jul 30, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N30/24
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A needle interface apparatus for maintaining a stable connection between a first instrument and a second instrument, such as an auto-sampler unit and a gas chromatograph. A needle interface apparatus is comprised of a modified septum nut on the second instrument which has a nipple, and a needle assembly having a sleeve positioned around the needle wherein the sleeve frictionally fits over the nipple of the modified septum nut. A support tube surrounds the needle assembly and connected transfer line from the first instrument to minimize flexing of the outlet tubing relative to the needle assembly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.