Apparatus and method for recirculating machine tool coolant and removing ferrous debris therefrom
CA 2423035 A1 · Owner: Bratten, Jack R. · Inventors: Bratten, Jack R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An apparatus and method for recirculating machine tool coolant in which coolant, and entrained debris flowing in a shallow stream trough are raised to a higher level by rotation of, a bladed wheel in a housing arranged to receive the liquid flow stream. Coolant and debris is, then directed down at a magnetized body in a plunging discharge to bring ferrous debris into, contact with an upwardly facing surface of the magnetized body. The coolant and nonferrous, remaining entrained debris is collected in a tank and pumped back to the filter apparatus by a, chopper pump which has a hardened impeller having cutting edges cutting up the remaining, debris as it is pumped by the impeller.
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 March 21, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 21, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 21, 2025.
- 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.