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:
Feb. 01, 1977
Filed:
Aug. 05, 1975
Gerald L Schlatter, Boulder, CO (US);
Charles E Miller, Boulder, CO (US);
International Telephone and Telegraph Corporation, New York, NY (US);
Abstract
Apparatus for detecting the magnitude of a property of a fluid including a body mounted on a torsion spring that is oscillated by a feedback of alternately an in-phase and an out-of-phase signal from an amplifier having a gain adequate to sustain the oscillations. If the in-phase signal has a frequency directly proportional to f.sub.n and the out-of-phase signal has a frequency directly proportional to f.sub.h, then the magnitude of the property p is determined by the digital computation of ##EQU1## where K and B are constants. The property p may be any one of several properties including but not limited to viscosity.