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Expired Canadian patentCanada

Load measurement method and device

CA 2644580 C · Owner: Fleury, Byron A. · Inventors: Hooss, William C.; Morris, Daniel J.; Fleury, Byron A.

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Abstract From the Canadian patent

A device for axial load measurement on a mechanical control device (10) having rotating shaft (30) maybe used to derive a torque measurement. A mechanical control device (10) may comprise a valve actuator for fluid flow control devices. The load measurement device may include a beam (65a) op eratively connected to a rotatable shaft and configured to deform under axial displacement of the shaft. A sensor (80) maybe coupled with the at least one beam (65a) and configured to produce an output signal related to the axial displacement of the shaft. The beam may be retained between two bearings (74) of the rotatable shaft at a first end and fixed to the housing (120) of the mechanical control …

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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 March 3, 2006 and granted August 25, 2015. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 3, 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.
FiledMarch 3, 2006
GrantedAugust 25, 2015
Term endedMarch 3, 2026
Patent numberCA 2644580 C
Classification (IPC)G01N3/20

Timeline

Timeline From CIPO dates

2007200920112013201520172019202120232025Application filedMarch 3, 2006Patent grantedAug 25, 2015Term endedMarch 3, 2026

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