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Expired Canadian patentCanada

Energy absorber and deflection device

CA 2494730 C · Owner: Mather, Robert · Inventors: Mather, Robert

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

An energy absorber and deflection device for deflecting engine debris (7) fragments from their tangential trajectory from a core of a gas turbine engine. The device includes a deflection plate (8) radially spaced from a protected portion of the periphery of the rotor adapted to cover the , protected portion in a closed position and to swing open about a fore edge of the deflection plate to a deployed position. A flexible joint secures the fore edge (10) of the deflection plate (8) to the engine and a frangible joint secures an aft edge (11) of the deflection plate to the engine. In the case of a turbofan engine, the deflector plate may form part of the inner bypass duct surface to …

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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 July 8, 2003 and granted July 10, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 8, 2023.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 8, 2025.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJuly 8, 2003
GrantedJuly 10, 2012
Term endedJuly 8, 2023
Patent numberCA 2494730 C
Classification (IPC)F01D21/04

Timeline

Timeline From CIPO dates

2004200620082010201220142016201820202022Application filedJuly 8, 2003Patent grantedJuly 10, 2012Term endedJuly 8, 2023

Sources & verification

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