Switch with improved protection from ice conditions
CA 2530920 C · Owner: S&C Electric Company · Inventors: Kerr, Terrence S.; Riopka, William W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An arrangement is provided to protect an electrical switch from the deleterious , effects of ice formation that inhibits switch operation. In a preferred arrangement, an , ice shield is provided that protects the current-carrying contact structures and other , operative elements of the switch from ice buildups. In one specific arrangement, as the , switch is moved from the open position to the closed position the ice shield , moves , away from the contact structure of a moving contact of the switch to permit unfettered , engagement with a stationary contact structure of the switch.
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 December 20, 2005 and granted April 29, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 20, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.