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Expired Canadian patentCanada

Centrifugal force bearing with steady pitching moment

CA 2662744 C · Owner: Rauber, Richard · Inventors: Rauber, Richard; Stamps, Frank B.

CIPO record

Overview

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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 centrifugal force bearing having a means for providing a steady pitching moment is disclosed. The centrifugal force bearing may optionally comprise a coning means. A rotor system having the centrifugal force bearing is disclosed. A rotary-wing aircraft having the centrifugal force bearing is disclosed.

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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 June 20, 2006 and granted April 17, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 20, 2026.
  • 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.
FiledJune 20, 2006
GrantedApril 17, 2012
Term endedJune 20, 2026
Patent numberCA 2662744 C
Classification (IPC)B64C27/35 +1 more

Timeline

Timeline From CIPO dates

2007200920112013201520172019202120232025Application filedJune 20, 2006Patent grantedApril 17, 2012Term endedJune 20, 2026

Sources & verification

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