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Expired Canadian patentCanada

Plug-in spigot-and-socket joint

CA 2114292 C · Owner: Vorbeck, Manfred · Inventors: Vorbeck, Manfred

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 spigot-and-socket joint which is secured against sliding is designated to connect the spigot end (3) of a pipe which can be slid into the socket end (2) of another pipe with radial play existing. In the socket end there are arranged a sealing ring (8) and a separate clamping ring (14) comprising a plurality of circumferentially extending spaced, clamping segments (15) having a spherically convex outer surface (17) and, on an inner surface, a tooth system (19) which, in the presence of axial forces presses radially onto, the spigot end (3) as the spherically convex surface (17) cooperates with a pipe socket's inner surface (18) which tapers conically towards the end. An elastomeric …

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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

  • Filed January 26, 1994 and granted March 4, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 26, 2014.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 26, 2016.
  • 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 26, 1994
GrantedMarch 4, 1997
Term endedJanuary 26, 2014
Patent numberCA 2114292 C
Classification (IPC)F16L37/02 +1 more

Timeline

Timeline From CIPO dates

1995199719992001200320052007200920112013Application filedJan 26, 1994Patent grantedMarch 4, 1997Term endedJan 26, 2014

Sources & verification

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