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Expired Canadian patentCanada

Self-plugging blind rivet

CA 1251663 A · Owner: Avdel Systems Limited · Inventors: Denham, Keith; Archer, Stephen

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 rivet comprises a tubular body having a shank having a rivet head at one end and an end portion of which is tapered externally and internally towards the other (tail) end. A stem, disposed in a bore of the body has, a stem-tail which projects from the head end and breaks off when the rivet is set, a plug in the bore and a ter-, minal head abutting the tail-end. The diameter of the plug is reduced progressively and stepwise towards the terminal head, providing an abutment and an annular groove between the terminal head and the abutment. Material of the end portion extends into the groove to maintain the body and stem assembled, and enters further into the groove during setting of the …

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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 March 28, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 28, 2006.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledNovember 14, 1984
GrantedMarch 28, 1989
Term endedMarch 28, 2006
Patent numberCA 1251663 A
Classification (IPC)F16B13/04 +2 more

Timeline

Timeline From CIPO dates

19851988199119941997200020032006Application filedNov 14, 1984Patent grantedMarch 28, 1989Term endedMarch 28, 2006

Sources & verification

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