Rotation control system for z-type propulsion apparatus
CA 1231768 A · Owner: Niigata Engineering Co. Ltd. · Inventors: Aizawa, Yasuo; Kodera, Masanori; Ichijo, Kohji
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
There is provided a rotation control system for a Z-type propulsion apparatus which can achieve an optimum turning of a vessel under any steering conditions of the vessel by controlling the rotation speed of a hollow rotary housing of the Z-type propulsion appatatus in accordance with the load exerted on the rotary housing, the number of revolution of a propeller provided in the rotary housing or the combination, thereof. A difference between a signal representative of an angle of a steering handle and a signal representative of an angle of the rotary housing is first detected. The detected signal, which is representative of the difference between the angle of the steering handle and the …
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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
- Granted January 19, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 19, 2005.
- 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.