Paper forming activity control with lifting variable angle inertial stimulation blades
CA 2292420 A1 · Owner: Thermo Fibertek Inc. · Inventors: Carlton, Keith; Grogan, Daniel; Neun, John A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A papermaking apparatus such as a Fourdrinier table which includes a long blade (10) and a trail blade (14). In the first aspect of the invention the , long blade (10) includes an upper undulated surface (12) with vents (18) passing from the upper undulated surface (12) to the lower surface of the long blade (10) which is at substantially atmospheric pressure. In the second aspect of the invention, the trail blade (14) includes an elevator-type device (22) for adjusting the vertical position of the trail blade. In a third aspect of the invention, a single elevator (38) is used to adjust the angle of the blade, the blade is provided as a modular or multiple-piece design mounting , …
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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 June 11, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 11, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 11, 2020.
- 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.