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Expired Canadian patentCanada

Shaft mounting device and method

CA 1182625 A · Owner: Rotoflow Corporation · Inventors: Swearingen, Judson S.

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

A device for accommodating and measuring thrust loads on a rotatably mounted shaft wherein the thrust loading is in either axial direction. The rotatably mounted shaft has two shoulders facing in opposite axial directions which cooperate with a pair of thrust bearings to constrain the shaft to a limited range of axial movement. Thrust rings associated with the shoulders are positioned between the shoulders and the bearings and are biased toward the bearings by resilient members to resist the axial movement of the shaft between the bearings. Sensing systems are arranged to measure the axial displacement of the shaft and provide input to thrust monitoring and control systems. A method for …

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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 19, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 19, 2002.
  • 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 22, 1981
GrantedFebruary 19, 1985
Term endedFebruary 19, 2002
Patent numberCA 1182625 A
Classification (IPC)G01L5/12

Timeline

Timeline From CIPO dates

1982198519881991199419972000Application filedMay 22, 1981Patent grantedFeb 19, 1985Term endedFeb 19, 2002

Sources & verification

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