Device for controlling a drive mechanism for an automotive accessory
CA 2008596 C · Owner: Etablissement Voralp · Inventors: Droge, Bernhard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention concerns a device for controlling a drive mechanism, e.g. for windshield wipers wiping/washing, systems, sliding roofs and the tops of motor vehicles dependent on how moist or dirty the windshield is on the outside. With help of a sensor and a special computation circuit, the degree and type of moisture or dirt can be ascertained. Depending on whether or not there is only a fine mist or a heavy thundershower, the appropriate circuits on the windshield wipers, sliding roofs or tops are automatically actuated. If dirt is detected on the windshield, then a wiping/washing system is switched on. Sudden splashes on the windshield which appear just before, the last wiping action of a …
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 January 25, 1990 and granted March 4, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 25, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 25, 2012.
- 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.