End cap assembly for an alkaline cell
CA 2337071 A1 · Owner: Duracell Inc. · Inventors: Gardner, William H.; Sargeant, Sean A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An end cap assembly (10) for sealing the open end of a small diameter cylindrical alkaline cell housing (70) comprises a terminal end cap (200) an , insulating sealing disk (150) underlying said end cap and an elongated , current collector (80) penetrating through an aperture in said insulating sealing disk (150). At least a portion of the insulating sealing disk (150) lies within the cell housing (70). The terminal end cap (200) has peripheral edge (222), preferably formed from a curved rib (215) which is locked within , the peripheral edge (155) of the insulating sealing disk (150). The end cap assembly (10) does not require other metal disks held within the sealing and insulating …
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 July 28, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 28, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 28, 2021.
- 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.