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Expired Canadian patentCanada

Narrow profile vortex shedding body

CA 1183755 A · Owner: Foxboro Company (The) · Inventors: Marsh, David W.

CIPO record

Overview

Drawings and full text

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

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Abstract From the Canadian patent

A body for improved shedding of vortices within a flowing fluid has a very short downstream length e.g. 1/8 inch, yet is capable of excellent flow-metering performance. The body includes an upstream elongate thin plate spanning the inner diameter of a conduit, and one or more sections projecting downstream of the plate. Generally, these sections are in the form of cylindrical rods having circular, rectangular or oval cross-, sections, with their longitudinal axes parallel to the longitudinal axis of the plate. Although these sections may be separated from the plats, in certain embodiments they are rigidly attached to the downstream side thereof. By simultaneously maintaining the ratio of …

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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 March 12, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 12, 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 31, 1983
GrantedMarch 12, 1985
Term endedMarch 12, 2002
Patent numberCA 1183755 A
Classification (IPC)F15D1/02 +1 more

Timeline

Timeline From CIPO dates

1984198619881990199219941996199820002002Application filedMarch 31, 1983Patent grantedMarch 12, 1985Term endedMarch 12, 2002

Sources & verification

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