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Expired Canadian patentCanada

Vortex flowmeter bluff body

CA 1190414 A · Owner: Rosemount Inc. · Inventors: Corpron, Gary P.

CIPO record

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

A vortex flowmeter utilizes a bluff, body or bar which creates vortices that are sufficiently stable and of sufficient strength to provide for pressure signals that are easily sensed and at the same time achieves satisfactory linearity between the frequency of the vortices and the rate of flow past the sensor. The flowmeter is designed so that the same sensor arrangement for sensing the frequency of vortex generation can be used for flowmeters designed for a wide range of pipe or line sizes. By utilizing the cross section geometry of the bluff body or bar disclosed herein, the section of the body that is used for, mounting the sensor is the same width which is, the critical dimension for …

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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.

Why it's free to use

  • Granted July 16, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 16, 2002.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 1, 1983
GrantedJuly 16, 1985
Term endedJuly 16, 2002
Patent numberCA 1190414 A
Classification (IPC)G01F1/32

Timeline

Timeline From CIPO dates

1984198619881990199219941996199820002002Application filedMarch 1, 1983Patent grantedJuly 16, 1985Term endedJuly 16, 2002

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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.