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Expired Canadian patentCanada

Drive system for the orbiting scroll of a scroll type fluid compressor

CA 1282755 C · Owner: Sanden Corporation · Inventors: Sugimoto, Kazuo; Gonda, Hideyuki

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 scroll type compressor includes a housing a pair of scrolls, each comprising an end plate and a spiral wrap projecting from one surface of the end plate and a drive shaft supported within the housing. The drive shaft has a crank pin which is inserted into a hole formed in a bushing disposed in a tabular boss on the other end surface of the end plate. The hole in the bushing is formed so as to contact the outer surface of the crank pin at one point along the inner surface of the hole.

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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 April 9, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 9, 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.
FiledJanuary 24, 1986
GrantedApril 9, 1991
Term endedApril 9, 2008
Patent numberCA 1282755 C
Classification (IPC)F04C18/02 +1 more

Timeline

Timeline From CIPO dates

19871990199319961999200220052008Application filedJan 24, 1986Patent grantedApril 9, 1991Term endedApril 9, 2008

Sources & verification

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