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Expired Canadian patentCanada

Clutch safety features

CA 1233772 A · Owner: Nexen Group, Inc. · Inventors: Raines, Charles D.; Hanks, James V.

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

TITLE, Clutch Safety Features, ABSTRACT OF THE DISCLOSURE A clutch where the output always comes to the same degrees of registry with the input is shown as including coaxial drive and driven members including a hub for mounting on a drive shaft. The drive member is slidably mounted on the hub and rotatable thereby. The drive member is formed with a multiplicity of ball-receiving cavities which are located radially inward of the periphery of the drive member. The driven member includes a carrier member having a multiplicity of balls mounted thereon for engagement with the cavities. The carrier member includes a flat, radial ring portion and an inner annular flange which provides a first …

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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 March 8, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 8, 2005.
  • 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 15, 1985
GrantedMarch 8, 1988
Term endedMarch 8, 2005
Patent numberCA 1233772 A
Classification (IPC)F16D13/22 +1 more

Timeline

Timeline From CIPO dates

1986198819901992199419961998200020022004Application filedMay 15, 1985Patent grantedMarch 8, 1988Term endedMarch 8, 2005

Sources & verification

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