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:
Jun. 06, 2000
Filed:
Mar. 09, 1998
Geoffrey Robinson, Spring, TX (US);
Baker Hughes Incorporated, Houston, TX (US);
Abstract
The invention comprises a viscometer for indicating a liquid viscosity in terms of a measured rotational deflection imparted upon a support structure for supporting a bob within the liquid, which has a bob assembly unit suspended between the fixation points for a torsion wire. The torsion wire runs through a tube, which is connected to the bob. The tube has cutouts so that it may rotate in response to rotations of a cup, in which the bob is disposed. The framework to support the fixation points for the wire is preferably positioned to extend through cutouts in the tube so as not to interfere with rotational movements of the tube. An arm connected to the tube in conjunction with a transducer measures the angular defection of the wire for determination of viscosity for the fluid being examined. The rotational viscometer also comprises a centralizing device for improving the accuracy, stability, reliability and overall performance thereof, where such centralizing device for the bob exerts a symmetric non-contact force, as a magnetic force, on the bob exposed to the liquid under test.