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:
Nov. 02, 2004
Filed:
Mar. 12, 2003
Jimmy Leung, Fremont, CA (US);
Layne Howard, Los Gatos, CA (US);
James Higgins, Campbell, CA (US);
Bao Nguyen, San Jose, CA (US);
Varian, Inc., Palo Alto, CA (US);
Abstract
An NMR sample tube assembly for holding a sample comprises a sample tube, a sealing plug for sealing the sample within the sample tube, and a rotor for spinning the assembly. The plug is clamped to the sample tube by an axial force. Preferably, the sample tube has a sealing flange protruding from the sample tube exterior along an inlet region of the sample tube. A filling part of the plug is sized to maintain an air escape clearance between the filling part and the sample tube for allowing air to escape out of the sample tube as the filling part is inserted therein. The rotor is secured to a protruding sealing part of the plug and clamps the sealing part to the sealing flange. The designs allow the use of wide sample tube mouths, and reduce the amount of air bubbles present in the samples during measurements.