Wheel driven suction nozzle
CA 2253306 C · Owner: Weber, Vincent L. · Inventors: Weber, Vincent L.; Barker, Douglas C.; Miller, Daniel R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A wheel driven suction nozzle having an upper body attached to an under body. An opening is formed at a front of the upper body which provides access to a suction cavity. An agitator covered with a fluff material is removably rotatably mounted within the cavity and extends partially out a bottom of the under body to clean and shine bare floors. A cover is hingedly mounted to the upper body and movable between an open position which provides access to the cavity and allows for removal of the agitator and a closed position which covers the cavity and prevents removal of the agitator. A cogged front pulley is attached to one end of the agitator. A cogged belt is driven by a rear cogged pulley …
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 November 10, 1998 and granted October 28, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 10, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 10, 2020.
- 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.