Means for splicing two pipes
CA 1260242 A · Owner: Nitro Nobel Ab · Inventors: Lande, Goran; Persson, Bengt
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Explosion welding is used for splicing thick pipes for the transport of oil and gas. A plating ring and its explosive are located inside the pipes and a support surrounding the two pipes in order to limit the deformation occurring in the pipes during the actual welding process. Since the pipes are deformed, the support will also be deformed. To enable repeated use of the support, the section thereof which is subjected to said deformation is replaced by a resilient material.
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
- Granted September 26, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 26, 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.
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.