Method of controlling the press force in a continuously operating press
CA 2206732 A1 · Owner: Bielfeldt, Friedrich B. · Inventors: Bielfeldt, Friedrich B.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a method of controlling the press force on the press heating plates within the press length of an operating cycle in the production of particleboards, fiberboards and similar wooden-material boards, and also of plastic sheets, using a continuously operating press. In order to increase the longitudinal deformation gradient of the press heating plates the, invention consists in the fact that in the event of a, reduction of the specific press force from the maximum toward zero, the setting force for the longitudinal deformation of the press heating plates is increased accordingly, or, in the event of an increase in the specific press force from zero toward the maximum …
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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 May 29, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 29, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 29, 2019.
- 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.