Solid-liquid separator
CA 2108759 C · Owner: Amukon Kabushikikaisha · Inventors: Sasaki, Masayoshi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A solid-liquid separator comprising a number of stationary rings (6) arranged with spaces left therebetween, a number of floating rings (30) each disposed movably in the spaces between the stationary rings and a screw conveyor (31) provided in the inner space (S) of the stationary and floating rings (6, 30). The screw conveyor (31) is driven in rotation to convey sludge water introduced into the space (S), and while being conveyed only a water portion thereof is discharged to the exterior through the minute gaps (g) between the floating and stationary rings (6, 30). The motion of the floating ring (30) prevents clogging of the solid portion in the minute gaps (g).
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 February 18, 1993 and granted June 30, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 18, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 18, 2015.
- 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.