Heated wiper blade and blade carrier employing single heating element
CA 2182933 C · Owner: Guell, Ronald R. · Inventors: Guell, Ronald R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention relates to a new and useful improvement in a wiper blade and blade carrier which is electrically heated for use on the windshields of vehicles such as, automobiles, trucks, trains, boats airplanes and the like so as to prevent the accumulation of ice, sleet or snow on the wiper blade and wiper blade carrier. More particularly this, invention has references to an improved heating arrangement designed to be used in windshield wiper assemblies with minimum modification or redesign of blade supporting, oscillating means, etc. A heating element of resistance wire is disposed the entire length of the passageway of the wiper blade and beyond into the blade carrier. The heating …
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 August 8, 1996 and granted May 15, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 8, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 8, 2018.
- 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.