Portable electric tool vacuum cleaner control
CA 2175268 C · Owner: Emerson Electric Co. · Inventors: Hendrix, George E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A portable electric tool vacuum cleaner control to permit use of a vacuum cleaner independent of and in conjunction with a portable electric tool is disclosed. The vacuum cleaner control includes a motor control circuit and motor for operating the vacuum cleaner. An electric outlet is provided on the vacuum cleaner that is connected to the vacuum cleaner motor control circuit to enable a portable electric tool to be plugged into the vacuum cleaner electrical outlet. A three position on/off/automatic switch is provided on the vacuum cleaner for operating the vacuum cleaner motor control circuit to enable independent operation of the vacuum cleaner or joint operation the portable electric …
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 April 29, 1996 and granted November 20, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 29, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 29, 2018.
- 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.