A device for cleaning and doping equipment for threads
CA 2623976 C · Owner: Wellquip As · Inventors: Vatne, Per A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A device for cleaning and doping (lubrication) equipment for threads (3b 4b) , of the type used to join pipes (4) to a pipe string (3) especially in , connection with petroleum production where cleaning fluid and dope , (lubricant) are sprayed at the threads (3b 4b) at relatively high pressure , from at least one nozzle (5 6) mounted in the rotatable make-up section (1) of a power tong, and where at least one injection pump (7 8) arranged to , supply cleaning fluid or dope to the at least one nozzle (5 6) is located in , the rotatable make-up section (1) .
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 September 27, 2006 and granted May 20, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 27, 2026.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.