3-pole battery switches
CA 2115405 C · Owner: Glory Win International Group Limited · Inventors: Waugh, Iain Wallace
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An improvement is provided in a vehicle electrical system having a 3-pole battery, containing an AUX battery for supplying electrical auxiliaries and a CRA battery. The, improvement consists of a device for connection between the like poles of the battery. The device includes a normally-open switch connecting the CRA and AUX batteries, and, a normally-closed switch connecting the AUX battery to the electrical auxiliaries. Sensing means are provided which detects the state of charge of the AUX battery and any, current from the AUX battery to the CRA battery. These sensing means not only connect and disconnect the CRA battery and the AUX battery but also connect , and, disconnect 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 February 10, 1994 and granted June 27, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 10, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 10, 2016.
- 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.