Closure preventive device for water jet propulsion type outboard motor
CA 2274605 C · Owner: Ishigaki, Eiichi · Inventors: Ishigaki, Eiichi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A blockage preventing apparatus used for a water jet propulsion unit (2) is provided with a screen (6 springs (22), an engagement protrusion (21) and an engagement end portion ( 20a) . The screen (6) is rotatably supported with respect to the front end of a suction port (7) and movable between a closed position at which the screen covers the suction port (7 and an open position shifted downward from the suction port (7). The springs (22) urge the screen (6) to the closed position through a working shaft ( 17 ) . The engagement protrusion (21) is provided at the working shaft (17) and moved together with the screen (6) . The engagement end portion (20a) moves from the first position and …
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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 October 9, 1998 and granted June 3, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 9, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 9, 2020.
- 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.