Internal contact for charge unit
CA 2006633 A1 · Owner: Bitzel, Michael E. · Inventors: Gerke, Burton E. Jr.; Kubicko, Robert; Bitzel, Michael E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention is a vacuum cleaner recharging assembly. The assembly includes a vacuum cleaner having a motor, a housing enclosing the motor; a fan driven by the motor for producing a vacuum, and a canister for at least the reception of foreign matter and air drawn into the canister in response to the vacuum produced by the fan. The vacuum cleaner has a power source for powering the motor and electrical wiring interconnecting the motor and the power source. The assembly also includes a charging unit cooperable with the vacuum cleaner for charging the power source. The assembly further includes means for disconnecting the flow of electrical power from the power source to the motor …
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 December 27, 1989. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 27, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 27, 2011.
- 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.