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US 3,939,792 AGranted
Vertically liftable rudder blade
OwnerReidar Waseniusinventor
Life of this patent
Estimating the term…
Abstract
A rudder for an outboard motor having fins normally located in the slipstream produced by the motor propellor. The force of the water on the fins at a predetermined speed of the boat lifts the rudder vertically so that the steering of the boat is substantially independent of the rudder.
Claims10
The combination comprising
- a motor for a boat, said motor having a propelling means which produces a slipstream as the boat moves through the water,
- a rudder for steering the boat at speeds below a predetermined speed,
- means independent of the boat mechanically coupling the rudder to the motor propelling means so that the rudder is in a position to react to the slipstream produced by the propelling means and both turn together as the boat is steered,
- and means on said rudder responsive to the movement of the water at said predetermined speed and above lifting the entire rudder up in the water and out of the slipstream when the boat has reached said predetermined speed to make the steering of the boat substantially independent of the rudder.
1 more element
Dependencies are inferred from the claim text.