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Expired Canadian patentCanada

Scroll machine with plural pressurized seal enhancing chambers and static vane mounts

CA 1333480 C · Owner: Caillat, Jean-Luc Marc · Inventors: Caillat, Jean-Luc Marc; Weatherston, Roger Clark; Bush, James William

CIPO record

Overview

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

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Abstract From the Canadian patent

There is disclosed a scroll-type machine particularly suited for use as a refrigerant compressor and incorporating an improved suspension system for the non-orbiting scroll whereby the latter may be pressure baised for the purpose of augmenting tip sealing. The machine also has a modified wrap tip and end plate profile in order to enhance performance , as well as an improved lubrication system for the drive and a baffle arrangement to provide a directed suction inlet. The machine also has an Oldham coupling utilizing a novel ring element which is non-circular and provides for increased thrust-bearing size or reduced, machine size. There is also disclosed a method of manufacture of a …

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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 December 13, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 13, 2011.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 17, 1987
GrantedDecember 13, 1994
Term endedDecember 13, 2011
Patent numberCA 1333480 C
Classification (IPC)F01C1/04

Timeline

Timeline From CIPO dates

19881991199419972000200320062009Application filedAug 17, 1987Patent grantedDec 13, 1994Term endedDec 13, 2011

Sources & verification

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