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Expired Canadian patentCanada

Aircraft aircrew life support systems

CA 1295530 C · Owner: Hamlin, Humphrey A.S. · Inventors: Hamlin, Humphrey A.S.

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

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Abstract From the Canadian patent

Title: Aircraft Aircrew Life Support Systems Oxygen-enriched breathable gas for breathing by aircrew is delivered by an on-board oxygen generating system 11 utilising molecular sieve adsorber beds. The breathable gas is compressed by a compressor and supplied by way of an appropriately switched two-way valve to a plenum storage tank from which it is withdrawn for breathing by aircrew during normal flight operations. The two-way valve may be switched by electronic control means to connect the compressor with an aircrew seat mounted emergency storage bottle when breathable gas of maximum oxygen concentration is being delivered by the OBOGS and the pressure in the emergency storage bottle is …

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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 February 11, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 11, 2009.
  • 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 29, 1989
GrantedFebruary 11, 1992
Term endedFebruary 11, 2009
Patent numberCA 1295530 C
Classification (IPC)A62B7/14

Timeline

Timeline From CIPO dates

1990199219941996199820002002200420062008Application filedMay 29, 1989Patent grantedFeb 11, 1992Term endedFeb 11, 2009

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