Screening apparatus for fiber suspensions
CA 1257849 A · Owner: Rowland, Steve · Inventors: Rowland, Steve
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A screening apparatus for fiber suspension having one or more perforated screen drums means, for feeding the suspension to the feed side of the screen drum(s), means for removing the screened suspension from the opposite side of the screen drum(s), a rotor fitted with one or more sets of blades, each set consisting of a plurality of blades which are alternately inclined in forward and reverse inclination in relation to the axis of the screen drum(s) so as to form a (continuous) zig-zag pattern of blades around the screen drum(s) and, driving means for rotating the blades in relation to the screen drums. - 10 -
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
- Granted July 25, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 25, 2006.
- 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.