Support apparatus for papermaking machine rotating felt suction pipes
CA 2132875 C · Owner: Thermo Fibertek Inc. · Inventors: Scarano, Robert Vincent
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A suction pipe assembly (10) for dewatering a web in a papermaking machine includes a rotating pipe supporting suction cover (38) and attached to a frame (12) by a bearing sleeve (52). Support members (54 56 and 58) extend from the bearing sleeve (52) to the pipe without obstructing the flow of air through 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 January 18, 1994 and granted January 19, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 18, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 18, 2016.
- 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.