Heliconic thruster system for a marine vessel
CA 2111077 C · Owner: Aker, Charles M. · Inventors: Aker, Charles M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An improved thruster system (10) is provided for maneuvering and/or propulsion of a marine vessel (12), through the use of directionally oriented water jets discharged tangentially from a helicalconical flow chamber (18). The thruster system includes a high capacity pump (16) for pumping water through a hull intake (28) to the flow chamber (18) with a substantial helical or swirling action. The water exits the flow chamber through one or more of a plurality of tangentially oriented discharge conduits (20, 22, 24, 68) having discharge nozzles (64 64') for passage of high , velocity water jets through the hull (14) resulting in reaction, forces used to maneuver or propel the vessel (12). …
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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 April 16, 1993 and granted October 12, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 16, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 16, 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.