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Expired Canadian patentCanada

Coupling mechanism for a compressor

CA 2105350 C · Owner: Kanou, Hiroshi · Inventors: Kanou, Hiroshi

CIPO record

Overview

Drawings and full text

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

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Abstract From the Canadian patent

A coupling mechanism for a compressor of an automotive air conditioning system which is equipped with a safety mechanism for preventing damage to the engine due to compressor failure or malfunction. A front end plate with a tubular extension which extends in the direction parallel to the axis of rotation of the drive shaft is attached to one end of the compressor housing. A pulley is rotatably supported on said extension by means of a bearing. At its terminal end the drive shaft is connected to an, armature which includes a centrally located hole through which the drive shaft extends. The armature is connected by means of a bolt and a nut and rotates with the drive shaft. The pulley …

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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 September 1, 1993 and granted July 7, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 1, 2013.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 1, 2015.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 1, 1993
GrantedJuly 7, 1998
Term endedSeptember 1, 2013
Patent numberCA 2105350 C
Classification (IPC)F16D9/00 +1 more

Timeline

Timeline From CIPO dates

1994199619982000200220042006200820102012Application filedSep 1, 1993Patent grantedJuly 7, 1998Term endedSep 1, 2013

Sources & verification

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