Vacuum sweeping system for automatic scrubber
CA 2443875 C · Owner: Surtec, Inc. · Inventors: Fields, William A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A vacuum sweeper is cantilevered to a hinged bracket mounted to the front of a conventional automatic floor scrubber. The sweeper includes a vacuum head an overlying debris ramp, and two vertically rotating conical brushes having their base ends in contact with the floor. The base end of the conical brushes sweep a path at the edge of the vacuum sweeper in excess of the width of the scrubber. The entire vacuum sweeper apparatus is mounted for vertical excursion relative to the cantilevered mount to the hinge bracket to enable up and down excursion of the sweeper and vacuum responsive to either scrubber motion or inevitable floor irregularities encountered during floor scrubbing. Where …
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 2, 2003 and granted April 26, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 2, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 2, 2025.
- 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.