Air cooling of vacuum cleaner system
CA 2313657 A1 · Owner: Matsushita Electric Corporation Of America · Inventors: Mccormick, Michael J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A vacuum cleaner includes a housing having a hammerhead-shaped nozzle assembly with an agitator cavity formed in the nozzle assembly. An agitator is received in the agitator cavity and an agitator drive motor is held in that agitator. A suction fan is driven by a separate suction fan drive motor carried on the housing. An airflow pathway extending through the agitator and over the agitator drive motor communicates with a suction intake port leading to the suction fan. A light source may also be provided in the housing so that the airflow pathway directs air over the light source. A temperature sensor may also be provided in the airflow pathway between the agitator drive motor and the …
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 July 10, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 10, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 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.