Method and apparatus for securing an end of a headbox flow tube
CA 2105360 C · Owner: Metso Paper, Inc. · Inventors: Will, David Joseph
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method and apparatus are disclosed for securing an end of a headbox flow tube to an end plate. The method includes the steps of laser cutting the end plate such that the end plate defines an opening for reception therein of the end of the flow tube. The end of the flow tube is positioned within the opening, and the end of the flow tube is laser welded to the end plate in the vicinity of the opening for generating a water tight seal between the end of the flow tube and the end plate.
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 1, 1993 and granted November 11, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 1, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 1, 2015.
- 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.