Ultrasonic transducer element and assembly for sensing system
CA 2441073 A1 · Owner: Aktiebolaget Electrolux · Inventors: Haegermarck, Anders; Hulden, Jarl; Bergqvist, Thomas
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An improved ultrasonic transducer element and assembly for a sensing system for an, autonomous device, such as a robotic vacuum cleaner are disclosed. The , assembly, comprises two transducer elements each having an elongated configuration. The assembly is, mounted on the device so that it extends across the entire front of the device. One transducer, element is wider than the other. The narrower element is capable of generating both a wide, horizontal distribution of ultrasonic waves and a wide vertical distribution of ultrasonic waves. The wider element is capable of generating a wide horizontal distribution of ultrasonic waves, and an elevated, narrow vertical distribution of …
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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 7, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 7, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 7, 2024.
- 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.