Vaiable keel for sailing vessels (with the possibility to increase or decrease alternatively)
CA 2109685 A1 · Owner: Nickolas, Broumas · Inventors: Nickolas, Broumas
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The variable keel for vessels, consists of a blade and a shaft. The deeper the blade is lowered into the water, the bigger the surface of the keel (projecting bar keel) becomes. It provides an effective solution for the problem of balance and sailing stability for a ship. It abolishes and replaces the up-to-now methods used for balance and stability sailing vessels, which are complicated and expensive i.e.rigid keels, attached permanently to the vessel rolling weights and stability docks. This invention may be installed on all existing ships. With this new invention we may build ships of any form, especially the cylindrical forms with all the well, known advantages. With the variable keel …
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 November 22, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 22, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 22, 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.