Mixer
CA 2016169 C · Owner: Sulzer Pumps Ltd. · Inventors: Koskinen, Olavi
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 mixing fluids and, especially to a mixer shaft which is provided with a mixing means at the end thereof and which extends from one side of a mixing tank deep into space therein. According to the invention, the mixing shaft is mounted on bearings at a point near the mixing means, and the frame construction of the mixer shaft, including a shield, forms a shape convergent towards the mixing means which shape contributes to flowing of fluid. For purposes of service the mixer, shaft with its drive means may be transferred out of the tank without the necessity to empty the tank. The above has been achieved in such a manner that the mixer frame …
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 May 7, 1990 and granted April 12, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 7, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 7, 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.