Water-jet propulsion system for ships which are intended to be used in shallow waters
CA 2046157 A1 · Owner: Lais, Siegfried · Inventors: Lais, Siegfried; Krautkramer, Gerd
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A water-jet propulsion system for ships which are, intended to be used in shallow waters. A semi-axial bladed, turbine wheel with a vertical axis of rotation is disposed so that it can rotate in a well-shaped pressure housing. Into the pressure housing, the driving mechanism for the turbine wheel is introduced from above through a cover plate. At the lower end, the pressure housing is closed off by a bottom plate which has a concentric, centrally disposed water inlet for axial flow against the turbine wheel and at least one water outlet with a shallow inclination. A guiding apparatus in which the flow energy of the water conveyed by the turbine wheel is largely converted into pressure …
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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 3, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 3, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 3, 2013.
- 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.