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. 27, 1979
Filed:
Jun. 21, 1978
David A Brookfield, Sharon, MA (US);
Other;
Abstract
A viscometer of the type has a chamber within which there are concentric, open ended cylindrical elements, one within the other. A drive is provided to rotate one of the elements and the inner element, which is free to turn, has one end of a readout rod connected axially thereto. The readout rod extends freely through a tube which seals the rod against the fluid flowing through the chamber and its other end is outside the viscometer with the rotor of a readout device connected thereto. The major percentage of the wanted torsional resistance against the turning of the inner element relative to the other element is provided by a resilient device which also ensures lateral stability for the inner element thus enabling the rod-sealing tube to offer but a minor percentage of such resistance. The readout rod is held by a bearing adjacent its outer end and close to the center of gravity of the rotor.