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. 21, 1995
Filed:
Feb. 25, 1992
Vincent J Cushing, Annapolis, MD (US);
Other;
Abstract
A flowmeter for measuring the volumetric discharge in an open channel makes two measurements: (1) velocity at a fixed point, and (2) fluid level. A level-discharge function which is a function of level alone is then generated in response to the measured level, and the discharge function and velocity measurement are multiplied to obtain the volumetric discharge. For more accuracy, in a conduit through which fluid is flowing, a single velocity measurement at a point has a value v.sub.s, from which is inferred the effects of velocity profile in the conduit. A flowmeter in a second embodiment makes use of this such that a level-velocity-discharge function directly produces the volumetric discharge, using inputs from the velocity and level signals. In a third embodiment, when the conduit is full, the level measurement is dispensed with, and a velocity-discharge function directly produces the volumetric discharge, using input from the velocity sensor.