The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 09, 2001
Filed:
Sep. 12, 1997
Hartmut Schmidt, Karlsruhe, DE;
Bruker Analytik GmbH, Rheinstetten, DE;
Abstract
Magnetic shielding for a superconducting magnet coil, arranged in the inside of a cryostat and having a vertical z-axis for generating a static magnetic field of a homogeneity of <10,in the measuring volume of an NMR spectrometer, wherein the shielding comprises spatial shielding at a distance from the cryostat in the form of a ferromagnetic shielding plate arranged above the cryostat, is characterized in that the shielding plate comprises either areas outside of the z-axis having a final curvature in the downward direction or plane surfaces which are inclined with respect to the horizontal line at an angle 10°<theta<60°, truncated conical or truncated pyramid shaped surfaces. In this manner, the magnetic flux in a room located above the spectrometer is minimized and the expenditure for material and assembly for the shielding elements is considerably reduced.