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Expired Canadian patentCanada

Breakaway swivel coupling

CA 1284972 C · Owner: Helix Enterprises, Inc. · Inventors: Carmack, Paul D.; Nitzberg, Leonard 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

A tensile force actuated fuel line quick disconnecting coupling device has a pair of body members including interlocking elements which cooperatively couple and provide a fuel passageway through the body members and uncouple when a, tensile force above a predetermined limit is interposed on the fuel line. The interlocking elements may be in the form of a mortise and tenon connection having a detent type infrangible locking member for interconnecting the elements together. The interlocking elements may pivot one relative to the other so that a combination swivel joint and quick disconnecting coupling device is provided. Various types of interlocking members are disclosed as are both …

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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 June 18, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 18, 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.
FiledSeptember 23, 1988
GrantedJune 18, 1991
Term endedJune 18, 2008
Patent numberCA 1284972 C
Classification (IPC)B67D7/32 +2 more

Timeline

Timeline From CIPO dates

1989199119931995199719992001200320052007Application filedSep 23, 1988Patent grantedJune 18, 1991Term endedJune 18, 2008

Sources & verification

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