Continuously-operating press
CA 2015407 C · Owner: Bielfeldt, Friedrich Bernd · Inventors: Bielfeldt, Friedrich Bernd
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A continuously-operating press suitable for producing chipboard, fibreboard, plywood or similar products. The press has flexible endless metal bands serving to transmit pressing force to, and to pull the material to be pressed through, a pressing zone of the press. The metal bands are guided over drive rollers and guide rollers around a press bed on one side of an adjustable pressing gap and around an upper pressing block on the other side of the pressing gap. The metal bands are supported on roller rods whose axes run transversely to the direction of travel of the bands the, rods being positioned between the metal bands and the pressing bed or the upper pressing block. The bands have a …
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 April 25, 1990 and granted December 1, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 25, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 25, 2012.
- 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.