Method of underwater jointing and repair of pipelines
CA 1208462 A · Owner: Delersjo, Jan · Inventors: Delersjo, Jan
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
At the jointing of pipelines especially underwater, as, well as at the repair of damaged portions a jointing, piece must be inserted because the two pipe ends cannot entirely be jointed with precision. The invention proposes an explosive welding method with two explosive charges, by which method such a jointing piece can be welded-in rapidly and simply and the joint can be checked from the outside of the pipe.
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 July 29, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 29, 2003.
- 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.