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Expired Canadian patentCanada

Tubular connector

CA 1279004 C · Owner: Cooper Cameron Corporation · Inventors: Mcever, James P.; Theiss, David H.

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 ratcheting connector for providing a radial connection between two concentric tubular members with one of, the members having a recess in which a split latching ring is mounted with coarse threaded engagement between said split latching ring and said one member and fine threads on the side of said split latching ring facing the other member which has mating fine threads with a shape which cams said split latching ring into its recess as the threads move past each other in the direction of installation. Setting of the connector is accomplished after full engagement of the fine threads by rotation of the central tubular member less than a full revolution.

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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 January 15, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 15, 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 12, 1988
GrantedJanuary 15, 1991
Term endedJanuary 15, 2008
Patent numberCA 1279004 C
Classification (IPC)E21B33/03 +2 more

Timeline

Timeline From CIPO dates

1989199119931995199719992001200320052007Application filedJan 12, 1988Patent grantedJan 15, 1991Term endedJan 15, 2008

Sources & verification

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