Surface cleaning vehicle with high air efficiency
CA 2317100 A1 · Owner: Vanderlinden, Roger · Inventors: Vanderlinden, Roger
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A surface cleaning vehicle comprises an air blast outlet or a rotating sweeping broom for effecting a forwardly propelled stream of debris from a contacted portion of a surface being cleaned. A debris chute has a rearwardly facing inlet positioned to receive the forwardly propelled stream of debris thereinto and that is connected in fluid communication via an interior passage with an elevated outlet. An airflow is effected in the interior passage of the debris chute from the inlet to the outlet thereby augmenting, travel of the forwardly propelled stream of debris along the interior passage of the debris chute toward the outlet and into a hopper. Alternatively, a surface cleaning and debris …
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 August 10, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 10, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 10, 2022.
- 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.