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Expired Canadian patentCanada

Pressure regulating valve

CA 1182426 A · Owner: Compagnie Industrielle De Mecanismes En Abrege C.I.M. · Inventors: Canadas, Jean C.; Steiner, Michel

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

The valve comprises a body in the shape of a cup whose edge portion is secured around an aperture in a wall of an enclosure. An annular T-shaped partition wall divides the interior of the body into two chambers which communicate respectively with the interior of the enclosure and with the outside atmosphere. Ports extend respectively through the vertical leg and the branches of the T. An elastically yieldable sleeve whose axial section is in the shape of a lily is a grip fit on the vertical leg of the T and is applied by its annular flange against the inner surface of the body. This arrangement both allows the gases within the enclosure to escape by way of the port in the vertical leg of …

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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 12, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 12, 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.
FiledApril 8, 1982
GrantedFebruary 12, 1985
Term endedFebruary 12, 2002
Patent numberCA 1182426 A
Classification (IPC)B65D51/16 +2 more

Timeline

Timeline From CIPO dates

1983198519871989199119931995199719992001Application filedApril 8, 1982Patent grantedFeb 12, 1985Term endedFeb 12, 2002

Sources & verification

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