Patent ID: 6686740
Filing Date: 2004-02-03
Classification: G01R

Abstract:
A device for transporting an elongated sample tube, filled with a measuring substance, into a measuring chamber of a nuclear magnetic resonance (NMR) magnet system and for positioning the sample tube relative to a vertical axis of an NMR receiver coil system, the device comprising:an air turbine spinner having an axial bore through which the sample tube can be inserted, transported together with the spinner on an air cushion into the measuring chamber, and positioned therein relative to the vertical axis of the NMR receiver coil system, said axial bore having an upper and a lower bore region, said lower bore region defining a horizontal stop surface proximate a bottom within said lower bore region; and a mounting sleeve, said mounting sleeve disposed in a collar-like manner to directly contact and radially surround the sample tube without slippage relative thereto, said mounting sleeve having a horizontal end face in flat abutment with said horizontal stop surface, wherein said upper bore region has an inner diameter which is larger than an outer diameter of said mounting sleeve and said lower bore region has an inner diameter which is smaller than said outer diameter of said mounting sleeve but larger than an outer diameter of the sample tube, whereby the sample tube is free to move relative to said spinner in a radial direction and in an upward axial direction but is constrained in a downward axial direction through cooperation between said mounting sleeve and said stop surface.