Cathodic protection controller
CA 1213562 A · Owner: Brunswick Corporation · Inventors: Staerzl, Richard E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Cathodic Protection Controller, Abstract A control system (17) for cathodically protecting an outboard drive unit (11) from corrosion includes an anode (12) and a reference electrode (13) mounted on the drive unit (11). Current supplied to the anode is controlled by a transistor (20), which in turn is controlled by an amplifier (25). The amplifier is biased to maintain a relatively constant potential on the drive unit (11) when operated in either fresh or salt water.
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
- Granted November 4, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 4, 2003.
- 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.