Apparatus for processing metalworking fluid
CA 2256955 A1 · Owner: Fortier, David R. · Inventors: Fortier, David R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An apparatus 18 for processing metalworking fluid disposed in a sump 12 beneath a machine 10 is disclosed. Various construction details of the apparatus are developed and provide for removal of tramp oil from the working medium fluid and the aeration of the metalworking fluid to retard the formation of anaerobic bacteria. In one detailed embodiment the apparatus includes a, circulation system 42 having a by-pass flowpath 82f for supplying pressurized metalworking fluid to a fluid distribution system 14 and thence to the sump.
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 December 23, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 23, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 23, 2020.
- 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.