Chromatographic accessory incorporating injection switch assembl

Details Chromatographic accessory incorporating injection switch assembl Chromatographic accessory incorporating injection switch assembl

1982-01-21

1983-02-15

Schor, Kenneth M.

Chemical apparatus and process disinfecting, deodorizing, preser

Analyzer, structured indicator, or manipulative laboratory...

Means for analyzing liquid or solid sample

141 83, 141311R, 200153T, 422 89, 422 99, 422103, 7386486, 7386487, G01N 118, G01N 3106, B01L 1100

Patent

active

043740898

ABSTRACT:
A nut assembly for use on an injection switch for a chromatograph has a nut surrounded by a moveable member which is disposed to travel co-linearly with respect to the axis of the nut. The moveable member is biased so that its upper end extends above the nut to engage the body of a sample syringe. Upon engagement with the sample syringe the moveable member moves downwardly against the bias means. The bias means then triggers the microswitch. Upon withdrawal of the needle of the sample syringe the moveable member returns to its original position.

REFERENCES:
patent: 2547765 (1951-04-01), Lund
patent: 3414385 (1968-12-01), Beroza et al.
patent: 3581573 (1971-06-01), Purcell et al.
patent: 3841835 (1974-10-01), Kishimoto et al.
patent: 3886800 (1975-06-01), Boehringer
patent: 3939713 (1976-02-01), Estey
patent: 4143254 (1979-03-01), Heyrana
patent: 4199988 (1980-04-01), Riegger

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