초록

A remote powered propulsive device having a rudder which carries a propeller or oscillating fins which are powered by pedals alone or with hydraulic assist or by an electric motor.

대표청구항 ▼

1. A human powered watercraft comprising a bow and a stern, a deck, a rudder at the stern and a cockpit intermediate the bow and the stern further comprising: power means carried by the watercraft providing a source of propulsive power comprising pedals for receiving human input force;a seating area

1. A human powered watercraft comprising a bow and a stern, a deck, a rudder at the stern and a cockpit intermediate the bow and the stern further comprising: power means carried by the watercraft providing a source of propulsive power comprising pedals for receiving human input force;a seating area in said cockpit aft of said pedals for carrying a human operator;said rudder being freely rotatable left and right and carried about a vertical axis by a connection to said stern and having in proximity to the lower extremity of said rudder, propulsion means for propelling the watercraft comprising a propeller or fins;said rudder being retractable about said connection about an axis generally transverse to the stern of said watercraft, said rudder being rotatable on said connection about said axes to be stored above and lay essentially flat on the deck of said watercraft aft of said seating area while remaining connected to the stern of said watercraft; anda drive train connecting said source of propulsive power with the bottom of said rudder to drive said propulsion means. 2. The human powered watercraft of claim 1 further comprising: a steering handle located adjacent said seating area;ropes connecting said steering handle to said rudder so that the operator can cause said rudder to freely rotate about said vertical axis to steer, said ropes allowing said rudder to be retractable; andsaid ropes pass approximately through the center of rotation for retraction of said rudder thereby allowing steering to occur at any angle of retraction of said rudder. 3. The human powered watercraft of claim 1 wherein said pedals are adapted to move back and forth with a stepping motion. 4. Then human powered watercraft of claim 1 wherein said fins are adapted to assume the shape of a propeller blade. 5. The human powered watercraft of claim 1 wherein the craft is a catamaran. 6. The human powered watercraft of claim 1 wherein the craft is a kayak. 7. A human powered watercraft comprising a bow and a stern, a deck, a rudder at the stern and a cockpit intermediate the bow and the stern further comprising: power means carried by the watercraft providing a source of propulsive power comprising pedals for receiving human input force;a seating area in said cockpit aft of said pedals for carrying a human operator;said rudder being freely rotatable left and right and carried about a vertical axis by a connection to said stern and having in proximity to the lower extremity of said rudder, propulsion means for propelling the watercraft comprising at least one pair of flexible fins extending below the water line and carried by said rudder in proximity to the lower end of said rudder, each of said fins adapted to rotate about an axis parallel to the direction of thrust;said rudder being retractable up to 270° about said connection about an axis generally transverse to the stern of said watercraft and being rotatable on said connection to turn 90° about said vertical axis to be stored above and lay essentially flat on the deck of said watercraft aft of said seating area while remaining connected to the stern of said watercraft; anda drive train connecting said source of propulsive power with the bottom of said rudder to drive said rotatable flexible fins. 8. The human powered watercraft of claim 7 wherein said rudder extends below said propulsion means for protection of said fins. 9. A human powered watercraft comprising a bow and a stern, a deck, a rudder at the stern and a cockpit intermediate the bow and the stern further comprising: power means carried by the watercraft providing a source of propulsive power comprising pedals for receiving human input force;a seating area in said cockpit aft of said pedals for carrying a human operator;said rudder being freely rotatable left and right and carried about a vertical axis by a connection to said stern and having in proximity to the lower extremity of said rudder, propulsion means for propelling the watercraft comprising a propeller;said rudder being retractable about said connection about an axis generally transverse to and fixed to the stern of said watercraft, said rudder being rotatable on said connection about said axis to be stored above and lay essentially flat on the deck of said watercraft aft of said seating area while remaining connected to the stern of said watercraft; anda drive train connecting said source of propulsive power with the bottom of said rudder to drive said propeller. 10. The human powered watercraft of claim 9 wherein said rudder extends below said propulsion means for protection of said propeller. 11. The human powered watercraft of claim 9 wherein said propeller is mounted on a horizontal propeller shaft carried by the rudder. 12. A human powered watercraft having a bow and a stern, a deck, a rudder at the stern and a cockpit intermediate the bow and the stern comprising: power means carried by the watercraft providing sources of propulsive power comprising pedals for receiving human input force;a seating area in said cockpit aft of said pedals for carrying a human operator;said rudder being freely rotatable left and right and carried about a vertical axis by a connection to said stern and having in proximity to the lower extremity of said rudder, propulsion means for propelling the watercraft comprising at least one pair of flexible fins extending below the water line and carried by said rudder in proximity to the lower end of said rudder, each of said fins rotatable to rotate about an axis parallel to the direction of thrust;said rudder being retractable about said connection about an axis generally transverse to the stern of said watercraft, said rudder being rotatable on said connection about said axes to be stored above and lay essentially flat on the deck of said watercraft while remaining connected to the stern of said watercraft aft of said seating area;a drive train connecting said sources of propulsive power with the bottom of said rudder to drive said flexible fins;said watercraft carrying a battery forward of the stern;an electric motor carried by said rudder;said battery configured to supply electrical power to said electric motor; andsaid electric motor configured to provide driving force to said at least one pair of rotatable flexible fins. 13. The human powered watercraft of claim 12 wherein said rudder extends below said propulsion means for protection of said fins. 14. A human powered watercraft having a bow and a stern, a deck, a rudder at the stern and a cockpit intermediate the bow and the stern comprising: power means carried by the watercraft providing sources of propulsive power comprising pedals for receiving human input force;a seating area in said cockpit aft of said pedals for carrying a human operator;said rudder being freely rotatable left and right and carried about a vertical axis by a connection to said stern and having in proximity to the lower extremity of said rudder, propulsion means for propelling the watercraft comprising a propeller;said rudder being retractable about said connection about an axis generally transverse to and fixed to the stern of said watercraft, said rudder being rotatable on said connection about said axes to be stored above and lay essentially flat on the deck of said watercraft while remaining connected to the stern of said watercraft aft of said seating area;a drive train connecting said sources of propulsive power with the bottom of said rudder to drive said propeller;said watercraft carrying a battery forward of the stern;an electric motor carried by said rudder;said battery configured to supply electrical power to said electric motor; andmeans associated with said electric motor configured to provide driving force to said propeller. 15. The human powered watercraft of claim 14 wherein said rudder extends below said propulsion means for protection of said propeller.