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:
Jul. 20, 1976
Filed:
Feb. 18, 1975
John W Tanney, Ottawa, CA;
Canadian Patents and Development Limited, Ottawa, CA;
Abstract
A robust apparatus for measuring the velocity and/or density of a fluid stream comprises a cap-shaped nozzle which deflects pressurized fluid, issuing from a tube whose end is within the nozzle, back along the external surface of the tube to a receiver so that pressure indicated by a pressure measuring device attached to the receiver measures the velocity and/or density of a fluid stream flowing over the cap along the tube and over the receiver. The receiver may be an oversize, open ended receiver tube coaxial with receiver tube enclosing an annular receiver space around the tube. The receiver may also be a plurality of open ended receiver tubes around the tube, each attached to a different pressure measuring device so that a component of flow of and/or the density of a fluid stream transverse to the tube can be measured. The nozzle orifice geometry is defined in relation to the Reynolds number at the nozzle orifice in order that the pressurized fluid issues from the nozzle orifice as turbulent flow and the fluid pressure in the receiver is related to the velocity and/or density of the fluid stream in a consistent manner in any number of tests.