MAS-stator with suctioning-off device
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United States of America Patent
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-
Nov 20, 2018
Grant Date -
Nov 17, 2016
app pub date -
May 12, 2016
filing date -
May 13, 2015
priority date (Note) -
In Force
status (Latency Note)
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Abstract
An MAS stator (7) for an NMR-MAS probe head (1) has a bottom bearing (8) with at least one nozzle and at least one radial bearing (9a, 9b), wherein one substantially circular cylindrical MAS rotor (21c) is provided for receiving a measurement substance. The MAS rotor can be supported by compressed gas in a measurement position within the MAS stator by means of a gas supply device and can be rotated about the cylinder axis of the MAS rotor by means of a pneumatic drive. A suction device (100) is provided in a space below the radial bearing for suctioning-off the gas introduced by the gas supply device, and generates an underpressure in the space below the radial bearing during measurement operation. This provides a stator for NMR-MAS spectroscopy in which the closure at the head end of the stator is omitted.
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