Simplified command and control device for a coupling-welding machine for metal pipes in which the machine is inserted
CA 2248027 A1 · Owner: Psi Pipeline Service S.A. · Inventors: Ghidotti, Luigi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A command and control device (1) for a coupling-welding machine (2) for metal pipes (3, 4) within which said machine is positioned said machine (2) being , movable within the pipe by drive means (5) and provided with welding means (6) for joining different pieces (3, 4) of said pipe together the operation of , said welding means (6) and drive means (5) being controlled by control means (12) associated with the machine (2) and connected to commanding means (9) external to the pipe. The operation of the machine (2) is controlled by a single microprocessor unit associated with the control means (12).
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 December 10, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 10, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 10, 2019.
- 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.