Plug-in spigot-and-socket joint
CA 2114292 C · Owner: Vorbeck, Manfred · Inventors: Vorbeck, Manfred
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract 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 …
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 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.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.