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:
Aug. 17, 2004
Filed:
Apr. 29, 2003
Richard F. Lukay, Houston, TX (US);
OFI Testing Equipment, Inc., Houston, TX (US);
Abstract
A rotational viscometer includes a cylindrical bob attached to a bob axle, a concentric sleeve exterior of the bob, a motor for inducing rotation in the sleeve, a biasing spring attached to the bob axle for resisting axle rotation, and a measurement system comprising an electric field transmitter, an electric field receiver and a rotor extending intermediate the transmitter and receiver. The rotor is attached to the bob axle so that rotation of the bob axle and the rotor presents a measurable deviation of the electrical field received by the electrical field receiver. A processor calculates the angle of displacement of the bob from that sine and cosine of the received electrical field and transmits readable output in the form of a sample viscosity value to a display.