Rudder mechanism for ship
CA 2009793 C · Owner: Kanazaki, Kihachiro · Inventors: Kanazaki, Kihachiro
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A rudder mechanism for a ship comprises a support bearing fixed to the bottom of a stern of the ship a, rudder shaft with one end rotatably supported by the support bearing, a swayable shaft member connected to the other end of the rudder shaft, and a rudder wing connected to the swayable shaft member and disposed behind a propeller of the ship. The swayable shaft member and rudder wing form a swayable wing portion swayable in a ship backward direction. The swayable shaft member comprises a projection fixed to the rudder shaft or the rudder wing, a projection receiver fixed to the other of them and engaged with the projection and a, rotatable shaft inserted into the engaged projection and …
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 February 12, 1990 and granted May 25, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 12, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 12, 2012.
- 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.