Casing slotter
CA 2243157 C · Owner: Klimack, Brian · Inventors: Labonte, Raymond C.; Klimack, Brian
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention is a method and an apparatus for slotting a pipe having a longitudinal axis extending therethrough. A pipe bed supports and releasably secures the pipe to the pipe bed. A cutting head including at least one , cutter for slotting the pipe is located adjacent the pipe bed. Positioning means relatively position the pipe bed and the cutting head such that the pipe wall is perforated by the cutter at a location of contact between the cutter and the pipe wall. Longitudinal moving means relatively move the cutting head and the pipe bed for a distance in a direction which is substantially parallel to the longitudinal axis of the pipe secured to the pipe bed such that 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
- Filed February 7, 1997 and granted January 30, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 7, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 7, 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.