Novel seal and apparatus including same

Details Novel seal and apparatus including same Novel seal and apparatus including same

1977-02-25

1978-06-13

Swisher, S. Clement

Measuring and testing

Measuring vessel

277117, G01N 110

Patent

active

040941957

ABSTRACT:
An automatic liquid sample-injecting apparatus using a conduit such as a hypodermic needle or pipette to suck liquid from a sample source and transfer it to an injector valve apparatus. The apparatus utilizes the optimum embodiment of the apparatus being equipped with (a) novel seal means adapted to exert a radial thrust or wiping action on the conduit and (2) novel conduit working means featuring both a drip-proof means to supply a non-contaminating solvent for washing the exterior of the needle and means to remove such solvent, all without interfering with the use of the needle in a series of automatic injections.

REFERENCES:
patent: 1996953 (1935-04-01), Cotton
patent: 2767768 (1956-10-01), Jelinek
patent: 3824849 (1974-07-01), Harris et al.
patent: 3848469 (1974-11-01), Chizhov

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