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Expired Canadian patentCanada

Boresonic inspection system

CA 1293796 C · Owner: Michaels, Thomas Elsworth · Inventors: Michaels, Jennifer Emmons; Nottingham, Lawrence Darrell; Michaels, Thomas Elsworth

CIPO record

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

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Abstract From the Canadian patent

53,451, ABSTRACT OF THE DISCLOSURE, An immersion based ultrasonic inspection system is disclosed which is used to interrogate the bore and near bore material of turbine and generator rotors by passing ultrasonic search units through the rotor bore. This system utilizes variable focus array inspection transducers in a shear mode inspection of the near bore material. A ranging transducer is provided which is used to correct the surface time of the inspection beam. A mapping transducer and blind bore sensor allow diameter mapping of the rotor bore as well as a blind rotor end sensing as the scan head carrying the transducers enters the bore. A scan head centering device or chuck deploys four …

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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 31, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 31, 2008.
  • 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 25, 1987
GrantedDecember 31, 1991
Term endedDecember 31, 2008
Patent numberCA 1293796 C
Classification (IPC)F01D21/00 +2 more

Timeline

Timeline From CIPO dates

1988199119941997200020032006Application filedJune 25, 1987Patent grantedDec 31, 1991Term endedDec 31, 2008

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