Multiple cell flat pack battery and short protection therefor
CA 2111729 A1 · Owner: Miller, Lawrence F. · Inventors: Miller, Lawrence F.; Bast, Ronald J.; Gruenstern, Robert G.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to rechargeable batteries which include cell casing components (11 12), enclosing positive and negative plates separator, material and acid electrolyte. The battery includes a plurality of support members (65) extending from one or the other of the casing components, or from both casing components, the support members passing through the plates to permit uniform compression of the internal components. In its preferred embodiment the battery, includes one or more intermediate cell partitions (40) which permit stacking of individual cells to increase voltage. The partition (40) continues the utilization of the support members. In another disclosed embodiment the …
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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 17, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 17, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 17, 2015.
- 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.