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Expired Canadian patentCanada

Female connecting member with disassembly feature for articulated connection

CA 2022355 C · Owner: Schultz, Thomas R. · Inventors: Schultz, Thomas R.

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

In an articulated connection, an improved female connnecting member of the type having a ring seat within an annular groove is provided having an access passageway extending from an exterior surface of its front wall to a position at the annular groove which is covered by the ring seat. The access passageway provides for insertion and wedging of a tool between the ring seat and the floor of the annular groove to eject the ring seat from the annular groove during disassembly and maintenance of the articulated connection.

Read the whole patent

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 July 31, 1990 and granted August 23, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 31, 2010.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 31, 2012.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJuly 31, 1990
GrantedAugust 23, 1994
Term endedJuly 31, 2010
Patent numberCA 2022355 C
Classification (IPC)B61F5/02 +2 more

Timeline

Timeline From CIPO dates

1991199319951997199920012003200520072009Application filedJuly 31, 1990Patent grantedAug 23, 1994Term endedJuly 31, 2010

Sources & verification

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