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Expired Canadian patentCanada

Flotation nozzle

CA 1213925 A · Owner: Hercules Incorporated · Inventors: Mcanespie, Donald I.; Russ, Stephen J.

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 flotation nozzle is described as having an enclosed chamber with unique fluid emitting orifices which are angularly oriented to produce a desired, directional flow of fluid. One such orifice is a dimple-shaped cavity which extends inwardly of the chamber and has a circular opening in the downstream portion of the dimple relative to the flow of fluid in the, chamber. The opening is tilted so that the direction in which the fluid flows from the opening substantially coincides with the resultant velocity vector of the velocity vectors due to static and dynamic fluid pressures at the orifice.

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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 November 12, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 12, 2003.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledNovember 12, 1982
GrantedNovember 12, 1986
Term endedNovember 12, 2003
Patent numberCA 1213925 A
Classification (IPC)B05B1/00 +2 more

Timeline

Timeline From CIPO dates

1983198619891992199519982001Application filedNov 12, 1982Patent grantedNov 12, 1986Term endedNov 12, 2003

Sources & verification

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