Viscous fluid type heater and method for circulating heat exchange fluid
CA 2222090 A1 · Owner: Ban, Takashi · Inventors: Ito, Hajime; Ohshima, Toshihiro; Ban, Takashi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A viscous fluid type heater and a method for circulating heat exchange fluid in a heat exchange chamber of the heater. A rotor located in a heating chamber rotates to shear and heat viscous fluid, and the heat generated in the heating chamber is transferred to the heat exchange fluid. A first port is provided for introducing the heat exchange fluid into the heat exchange chamber. A second port is provided for draining the heat exchange fluid in the heat exchange chamber. An arc-like passage that connects the first port and the second port. The heat exchange fluid is introduced into the heat exchange chamber through the first port. Then, the heat exchange fluid flows through the passage, and …
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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 November 25, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 25, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 25, 2019.
- 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.