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Expired Canadian patentCanada

Pressurized fluid turbine engine

CA 2555760 C · Owner: Johnson, Neldon P. · Inventors: Johnson, Neldon P.

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 bladeless pressurized fluid turbine engine having a bladeless turbine internal, concentric or circumferential shaft fluid ways which transmit pressurized gas to the turbine, and a pressurized fluid intake assembly. The intake assembly has a fixed outer housing two or more shaft seals sealing , between the shaft and the outer housing forming fluid supply chambers between adjacent shaft seals, and a pair of shaft bearings bearing between the shaft and the outer housing. The outer housing has one or more fluid intake ports for each fluid supply chamber and each shaft fluid way has a shaft fluid intake which is hydraulically connected to a fluid supply chamber.

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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

  • Filed May 3, 2005 and granted July 10, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 3, 2025.
  • Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 3, 2005
GrantedJuly 10, 2012
Term endedMay 3, 2025
Patent numberCA 2555760 C
Classification (IPC)F03B3/08 +2 more

Timeline

Timeline From CIPO dates

2006200820102012201420162018202020222024Application filedMay 3, 2005Patent grantedJuly 10, 2012Term endedMay 3, 2025

Sources & verification

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