Continuously-operating press having resiliently mounted guided rollers for supporting pressing bands
CA 2015409 C · Owner: Maschinenfabrik J. Dieffenbacher Gmbh & Co. · 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 sheets or similar products. The press consists of endless metal bands serving to transmit pressing force to and to pull material to be pressed through said press. The metal bands are guided over drive rollers and guide rollers around a press bed or upper press block. The bands are supported on rolling rods whose axes run transversely to the travel direction of the bands positioned between the press bed or upper press block and the metal bands. The rolling rods are attached at their extremities via resilient centering pins extending into bores in guide bushings in links of a guide chain and into bores in the …
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 29, 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.