Sailboat rudder-motor prop guard

Marine propulsion – Screw propeller – Propeller guard

Patent

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Details

B63H 516

Patent

active

055671896

ABSTRACT:
A guard, particularly adapted to protect a blade of a sailboat rudder from a propeller of an outboard motor mounted on a stern of the boat, includes a mounting plate. The mounting plate has an inner end prepared for ready attachment to a side of a fin of the motor located above the propeller. As attached, the plate then extends laterally toward the rudder to terminate a selective distance beyond outer end tips of blades of the propeller. On an outer end of the mounting plate is a curved protector tube having forward and rear end curved sections which extend respectively toward and away from the boat stern and back toward the motor. During travel of the boat by operation of the motor, the boat is steered by movement of the rudder which selectively positions the rudder blade to effect changes in directions. When rotational movement of the rudder in the direction of the motor is excess, the rudder blade engages the guard protector tube. This engagement stops further rudder movement and thus prevents potentially damaging contact between the rudder blade and the rotating propeller.

REFERENCES:
patent: 142820 (1873-09-01), Stevens et al.
patent: 2054374 (1936-09-01), Fuller
patent: 2470874 (1949-05-01), Sidney
patent: 4565533 (1986-01-01), Springer
patent: 5176550 (1993-01-01), Hooper
patent: 5205766 (1993-04-01), Arsenualt

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