Combination head-protective helmet and thermal imaging apparatus
CA 2116895 C · Owner: Cairns & Brother Inc. · Inventors: Richter, Robert J.; Peel, Richard M.; Coombs, Christopher E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Combination head-protective helmet which includes a cap and an outwardly extending brim and thermal imaging apparatus which includes an infrared camera for producing an infrared image of a scene or object and a display system which generates a visible image of the scene or object from the infrared image the camera is, mounted underneath the brim of the protective helmet for protection against e.g. falling objects and the display system is mounted on the helmet in a position to permit a person wearing the combination to see the visible image.
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 March 3, 1994 and granted February 23, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 3, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 3, 2016.
- 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.