Needle interface apparatus

Details Needle interface apparatus Needle interface apparatus

1993-07-30

1994-08-23

Noland, Thomas P.

Measuring and testing

Sampler, sample handling, etc.

Analyzer supplier

73 2341, G01N 3018

Patent

active

053397010

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.

REFERENCES:
patent: 3353411 (1967-11-01), Nadeau et al.
patent: 3550452 (1970-12-01), Halasz
patent: 3610241 (1971-10-01), Le Marie
patent: 3693455 (1972-09-01), Harding et al.
patent: 4000654 (1977-01-01), Harris, Jr.
patent: 4274285 (1981-06-01), Purgold
patent: 4402911 (1983-09-01), Walters
patent: 4927605 (1990-05-01), Dorn et al.
patent: 5081872 (1992-01-01), Greter
Supelco, division of Rohm & Haas, catalog 28, front and back covers, pp. 120 and 121 (1990).
Supelco Septum Nut Installation Instructions with diagrams (1988).

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