Sample changer for NMR spectrometers

Details Sample changer for NMR spectrometers Sample changer for NMR spectrometers

1994-04-07

1996-07-09

O'Shea, Sandra L.

Electricity: measuring and testing

Particle precession resonance

Spectrometer components

422 63, G01R 3320

Patent

active

055347800

ABSTRACT:
A sample changer for a spectrometer of the type having a generally vertical sample loading air shaft in which an upflowing air stream is present. The sample changer includes a support for positioning at the spectrometer and a carriage movably supported by the support which carriage has an array of generally vertical passages extending entirely through the carriage, those passages being adapted to contain sample holders. The sample changer also includes an actuator for moving the carriage relative to the support to position each passage over the air shaft so that that passage becomes an extension of the air shaft whereby the sample holder in that shaft may be buoyed up and supported in its passage by the air stream from the airshaft. Provision is also made for releasing the sample holder from the carriage passage that is located directly over the air shaft so that that sample holder may be moved from its passage down into the air shaft and raised up and returned to its passage solely under the control of the air stream in the air shaft thereby enabling the sample changer to be slaved to the spectrometer.

REFERENCES:
patent: 4581583 (1986-04-01), Van Vliet et al.
patent: 4723474 (1988-02-01), Flohr
patent: 4859948 (1989-08-01), Kuster
patent: 5146166 (1992-09-01), Bartuska
patent: 5314662 (1994-05-01), Hemzy et al.

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