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Expired Canadian patentCanada

Turbine blade temperature detecting pyrometer

CA 1264090 C · Owner: Jensen, Stephen C. · Inventors: Jensen, Stephen C.

CIPO record

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Abstract From the Canadian patent

A temperature detection pyrometer for determining the temperature of a turbine blade includes means for detecting radiation reflected and emitted from the turbine blade. The reflected radiation is a result of flame and hot carbon particles rather than the emission representing the blade temperature. The radiation is divided into two channels , each of which detects radiation in different, but preferrably overlapping wavelength bands, to detectors providing currents proportional to the radiation intensity in the respective channel. The signal from one channel is weighted with respect to the signal from the other by a constant (k) that is equal to the ratio of the radiation in the two …

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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 December 27, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 27, 2006.
  • 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 28, 1986
GrantedDecember 27, 1989
Term endedDecember 27, 2006
Patent numberCA 1264090 C
Classification (IPC)G01J5/60

Timeline

Timeline From CIPO dates

1987198919911993199519971999200120032005Application filedJuly 28, 1986Patent grantedDec 27, 1989Term endedDec 27, 2006

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