Device for cleaning subsea surfaces such as ship hulls
CA 2545389 C · Owner: Sperre, Thor Olav E. · Inventors: Sperre, Thor Olav E.; Andersen, Robert
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Device for cleaning of surfaces under water,such as ship hulls comprising a , rotary disc (1) furnished with nozzles (2) for discharge of pressurized liquid against the surface to be cleaned. The nozzles (2) are mounted obliquely in relation to the rotational axis (3) of the rotary disc (1) and are arranged to be supplied with pressurized liquid through a hollow spindle (4) that is concentric with the rotational axis (3). The nozzles have an inclination that have an orientation involving that the velocity component (Vp) of the liquid jet from each nozzle (2) that is not perpendicular to the surface to be cleaned, has a tangential velocity component (Vt) that has the same direction …
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 10, 2004 and granted May 29, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 10, 2024.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.