Safety devices for insulative tools
CA 2432462 C · Owner: Manitoba Hydro-Electric Board · Inventors: Hesse, Karl
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Safety devices and methods of use thereof are provided for improving electrical safety of insulative tools. In particular the present invention provides a safety device for improving safety of an elongated insulative tool of a certain length with a substantially circular cross section having a cross sectional diameter and outer circumference the device comprising a substantially circular disc with an inner opening for said elongated insulative tool to position therethrough and said inner opening having a bore diameter that is substantially the same as or greater than the diameter of the elongated insulative tool. The present invention further provides novel methods of using through specific …
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 16, 2003 and granted September 4, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 16, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 16, 2025.
- 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.