Electrostatic cloth attachment for vacuum head
CA 2484129 C · Owner: Baer, Mark · Inventors: Crevling, Robert L. Jr.; Girton, Cory F.; Baer, Mark
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A vacuum head assembly is disclosed which includes a vacuum head detachably connected to a secondary head which is designed to carry an electrostatic cloth. The secondary head assumes a horizontal position behind the vacuum head so that the scoop of the vacuum head moves across the surface to be cleaned first followed by the secondary head equipped with the electrostatic cloth. The cloth thus engages the floor after the scoop of the vacuum head. The secondary head carrying the electrostatic cloth may be easily connected to and disconnected from the vacuum head thereby rendering the vacuum head suitable for both hard and soft (i.e. carpeted) surfaces.
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 October 6, 2004 and granted June 19, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 6, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 6, 2026.
- 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.