Safety power switch
CA 2264586 C · Owner: Szymanski, Donald M. · Inventors: Leet, L. R. Sr.; Phillips, Gregory A.; Szymanski, Donald M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A power outlet strip (30) having at least one receptacle (13); an element (12) for receiving power from a power source; a switch (4) coupled between the receptacle (13) and the element (12) for receiving power which operates to , control power transfer to the receptacle (13); a sliding member (7); and a safety key (6) for controlling the position of the sliding member (7). When the safety key (6) is engaged in the outlet strip (30) it positions the , sliding member (7) such that the switch (4) is accessible and operable by an operator. When the safety key (6) is removed from the outlet strip (30) it , positions the sliding member (7) such that the switch (4) is inoperable by 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 September 3, 1997 and granted August 20, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 3, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 3, 2019.
- 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.