Battery pack including electronic power saver
CA 2067752 C · Owner: Norand Corporation · Inventors: Koenck, Steven E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A housing (11) of a battery pack (10) contains in addition to standard power cell elements (14-16) a voltage converter (75). The voltage converter (75) is interposed between the power cell elements (14- 16) and external output contacts (29, 30 100) of the, housing (11). The voltage converter (75) regulates the output voltage applied to the output contacts (29, 30, 100) of the battery pack (10), such that the supply voltage of the battery pack (10) remains at a predetermined value which is independent of the voltage supplied by the power cell elements (14-16) to the voltage converter (75) and does not vary over the discharge cycle of the power cell elements (14-16). Excess battery …
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 November 5, 1990 and granted January 25, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 5, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 5, 2012.
- 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.