Cleaner head for a cleaning appliance
CA 2594748 C · Owner: Dyson Technology Limited · Inventors: Frederickson, Clive James
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A cleaning appliance (1) comprises dirt and dust separating means (8) a motor , (6) arranged to drive a fan (5) for generating suction air flow a selectively-, operable switch (23) for energising the motor and a cleaner head (13). The cleaner head has a driveable agitator in the form of a brush bar (15) and a dedicated motor (18). When the main vacuum motor (6) is switched on the brush , bar motor (18) is energised so that the brush bar is automatically driven on start-up of the cleaner. This enables the superior cleaning performance achievable with a brush bar to be automatically achieved without the user , having to remember to select operation of the brush bar.
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 9, 2006 and granted June 25, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 9, 2026.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.