Apparatus for guiding wires of a paper machine former
CA 2004124 A1 · Owner: Valmet-Ahlstrom Inc. · Inventors: Evalahti, Osmo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to an apparatus for guiding the wires of a paper making machine former. The former comprises a double wire section including two wires (1 2) running generally, parallel with each other in a longitudinal direction (R) in which on the other side or face of at least one of the wires (1 2) co-, operates with a dewatering unit (10) to drain water from the stock (3) flowing in a dewatering zone between the wires. At least the wire (2) which is remote from the dewatering unit is pressed by means of guide rods (20) or the like support members against the wire (1) nearest to the dewatering unit (10). The load of these guide rods (20) is controlled by a separate …
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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 November 29, 1989. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 29, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 29, 2011.
- 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.