Heater utilizing fluid frictional heat
CA 2219148 A1 · Owner: Moroi, Takahiro · Inventors: Moroi, Takahiro; Ban, Takashi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A heater utilizing fluid frictional heat according to this invention has a structure suitable for realizing the heater in an elongated shape which is capable of being mounted laterally on an automobile engine. A cylindrical shear applying portion being integral with a drive shaft and having an outer circumferential surface in cylindrical form is disposed in a heat generating chamber formed as a cylindrical space. The shear applying portion is machined with the same support arbors as used in machining the drive shaft. Preferably, the drive shaft and the shear applying portion are machined as a one-piece member made of a single rod-like material.
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 October 23, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 23, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 23, 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.