Thermometer insertable in winding of fluid cooled transformer
CA 1069720 A · Owner: Qualitrol Corporation · Inventors: Romanowski, Robert F.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A thermometer formed wholly of dielectric components inserted between the coils of a transformer winding immersed in cooling fluid within the case of a high voltage transformer the ther-, mometer having a rod responsive to temperature changes within the case to vary light transmission across terminals of a pair of fiber optics to an external signal converter connected to transmit converted signals to a readout unit. The body of the thermometer may take various forms according to the applications intended. In applications not requiring dielectric components, the body and sensing rod may each be formed of a different metal, with that of the body having a lower coefficient of thermal expansion …
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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
- Granted January 15, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 15, 1997.
- 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.