Water control gate and actuator therefore
CA 2982972 C · Owner: Obermeyer, Henry K. · Inventors: Mo, T.W.; Eckman, Robert D.; Obermeyer, Henry K.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention provides an impounded water seal apparatus comprising: a plate element attached to a vertical surface of an abutment of a water impoundment structure; a plate-to-abutment attachment element that attaches said plate element to said abutment surface a single, one-piece, abutment seal apparatus that establishes a movable seal between a water gate panel that is adjacent said plate element and that includes: a water gate panel conformable portion that is fixedly attached to an edge portion of said water gate panel; a flexible flap portion established alongside said water gate panel conformable portion wherein said flexible flap portion is slideable against said plate element; an …
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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 July 9, 2002 and granted January 29, 2019. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 9, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 9, 2024.
- 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.