Resistored sacrificial anode assembly for metal tank
CA 2178511 C · Owner: Roden, James S. · Inventors: Roden, James S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A sacrificial anode assembly is insertable into a metal water storage tank to inhibit corrosion thereof and includes a cylindrical metal anode member having an end retained within a cylindrical plastic insulating sleeve which in turn, is captively retained within a metal cap portion of the assembly. To regulate the amount of electrical current generated by the assembly during use thereof a barrel-shaped resistor is supported within the assembly and interconnected between its anode and cap portions. The insulating sleeve has a generally U-shaped groove formed in a closed end thereof with one leg of the groove extending diametrically across a central opening in the sleeve end that receives a …
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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 13, 1993 and granted July 18, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 13, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 13, 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.