Transformer assembly having cooling fins and method of providing same
CA 2071392 C · Owner: Hopkinson, Philip John · Inventors: Beck, Kenneth R.; Hopkinson, Philip John
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A transformer assembly comprises a tank body enclosing a transformer and a cooling liquid. A cooling collar is fixedly attached to the outer surface of the tank body. The cooling collar is formed separately from the tank body in a corrugated shape so as to be elastically expandably mounted onto the tank body. The collar is attached to the tank body by a thermally conductive epoxy. The corrugations of the collar define cooling fins for dissipating heat from the tank body. The cooling collar can be of one-piece or multi-piece construction, the latter comprising a plurality of collar segments hooked together in end-to-end fashion.
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 June 17, 1992 and granted February 20, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 17, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 17, 2014.
- 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.