Cable ship
CA 2010468 C · Owner: Kakizaki, Sadao · Inventors: Kakizaki, Sadao
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The known cable ship including a drum type cable engine installed on an inboard deck and a bow sheave at a top portion of a bow for receiving a communication cable payed out from a drum of the cable engine and sinking the cable to the bottom of the sea, is improved. The improvements reside in the additional provision of an intermediate sheave disposed between the bow sheave and the drum type cable engine. In order to dispose the bow sheave at a high position with respect to the water surface the upper, side guide section of the intermediate sheave is positioned at a higher level than the upper side guide section of the drum of the cable engine. The communication cable is extended from the …
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 20, 1990 and granted March 26, 1996. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 20, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 20, 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.