Apparatus for water-cooling oil used in a hydraulic system for actuating an injection molding machine
CA 2034686 C · Owner: Hehl, Karl · Inventors: Hehl, Karl
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
For selectively satisfying a basic cooling demand or a cooling demand which is an integral multiple of said basic cooling demand, the apparatus can be assembled from components selected from a plurality of sets of such components. For satisfying the basic cooling demand the apparatus comprises a single coolerfilter unit. One set of components consists of a plurality of said cooler-filter units. Another set of components consists of mounting blocks which, are to be mounted in a reservoir and adapted to communicate with cooler-filter units provided on the outside of a wall defining said reservoir. Another set consists of manifold blocks, each of which is adapted to be connected between the …
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 January 22, 1991 and granted December 3, 1996. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 22, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 22, 2013.
- 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.