Outboard motor steering system

Details Outboard motor steering system Outboard motor steering system

2005-01-18

2005-01-18

Olson, Lars A. (Department: 3617)

Ships

Steering mechanism

Remote control steering excluding manual operation

C114S1440RE, C440S001000

Reexamination Certificate

active

06843195

ABSTRACT:
In an outboard motor steering system for an outboard motor mounted on a stern of a boat and having an internal combustion engine at its upper portion and a propeller with a rudder at its lower portion powered by the engine to propel and steer the boat, a controller is connected to an actuator to rotate the outboard motor relative to the boat, and controls the actuator in such a manner that steered angle of the outboard motor relative to a steering angle inputted through a steering wheel becomes a predetermined ratio that is changed such that the steered angle of the outboard motor relative to the steering angle decreases with increasing moving speed of the boat. Alternatively, a switch is provided to be manipulated by the operator and generating a signal indicative of an instruction to change the steered angle of the outboard motor when manipulated; and the controller controlling the actuator to steer the outboard motor to an angle in response to inputted steering angle when the switch is not manipulated, while controlling the actuator to change the steered angle when the switch is manipulated. With this, the burdens of the operator are lightened and the steering feel is improved, in particular when the operator steers the boat to approach or leave a quay.

REFERENCES:
patent: 4759731 (1988-07-01), Uchida et al.
patent: 5253604 (1993-10-01), Bohlin
patent: 5389016 (1995-02-01), Nestvall
patent: 6336833 (2002-01-01), Rheault et al.
patent: 62-125996 (1987-06-01), None
patent: 02-279495 (1990-11-01), None
U.S. patent application Ser. No. 10/732,464, Mizuguchi et al., filed Dec. 11, 2003.

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