A one-person watercraft, with a unique design and basic innovative modular catamaran style structure that makes the craft transformable, and useful for different hybrid water sports. The watercraft enables the user to either stand or sit while providing power to the craft. The craft comes in multipl
A one-person watercraft, with a unique design and basic innovative modular catamaran style structure that makes the craft transformable, and useful for different hybrid water sports. The watercraft enables the user to either stand or sit while providing power to the craft. The craft comes in multiple versions, and the user may provide power to the craft through elliptical movement, hand-driven levers or foot-driven pedals/skis while standing up and/or sitting down and moving in an elliptical motion. These turn a propeller, at the back of the craft. Embodiments of the craft utilize the Venturi effect (with a flexible drive shaft and a retractable propeller rudder system) to increase the propulsion created by water flowing through the propeller. The craft is designed to float stably to ensure users' safety, and may be used for leisure recreational activity, exercise, physical rehabilitation, transportation to travel across water, or any combination of the above.
대표청구항▼
1. A human-powered watercraft comprising the following components; a “group of components that comprise a Venturi Drive”; and two or more floating members (2); and a differential gear system (12); a means through which motive power can be provided to said gear system (12); and a flexible drive shaft
1. A human-powered watercraft comprising the following components; a “group of components that comprise a Venturi Drive”; and two or more floating members (2); and a differential gear system (12); a means through which motive power can be provided to said gear system (12); and a flexible drive shaft (9); said “group of components that comprise the Venturi Drive” further comprising; one or more propellers (29); a Venturi pipe (22); a drive direction pillar (28); and a plate;where said plate is placed horizontally and has a hole through which said drive direction pillar (28) can fit, and can rotate while fitting through;where said Venturi pipe (22) is hollow and contains a hole in its top, which is its closest part to said plate, and another hole in its bottom, which is its part furthest away from said plate, where said drive direction pillar (28) is capable of fitting through both holes, and where said Venturi pipe (22) also contains a horizontal opening on each of its horizontal ends, and the larger of said horizontal openings is the end closer to said gear system (12) and has a greater diameter than the smaller of said horizontal openings;where said drive direction pillar (28) is round and fits through a hole in said plate; and through the hole in the top of said Venturi pipe (22), and through the other hole in the bottom of said Venturi pipe (22);where the diameter of said Venturi pipe (22) gradually decreases between the larger horizontal opening and the smaller horizontal opening;where said propeller (29) is located inside said Venturi pipe (22); and drives water from said larger horizontal opening in said Venturi pipe (22) to said smaller horizontal opening in said Venturi pipe (22);where said means by which motive power can be provided to said gear system comprises foot platforms (48) which can move in response to motive pressure placed on said foot platforms, and which are connected to said gear system (12) in a way that motive pressure placed on said foot platforms (48) can cause said foot platforms to move, which will transmit said motive power to said gear system (12); and also vertical handlebar grips (49) which are capable of either partially or fully rotating, and which are connected to said gear system (12) so that when motive power is placed upon said vertical handlebar grips (49) this motive power is transmitted to said gear system (12); so that said gear system transmits this motive power to said flexible drive shaft;where said gear system (12) connects to and transmits motive power to said flexible drive shaft (9);where said flexible drive shaft (9) connects to and transmits motive power to said propeller (29); causing said propeller (29) to turn. 2. The human-powered watercraft of claim 1 further comprising a drive direction control (24) placed on top of, and attached to, the drive direction pillar (28); where said drive direction control (24) allows the user to turn said drive direction pillar (28) by turning said drive direction control (24);and further comprising that when said drive direction pillar (28) turns it forces said Venturi pipe (22) and said propeller (29) to also turn, thus changing the direction in which said propeller (29) will propel the watercraft. 3. The human-powered watercraft of claim 2 further comprising that a pipe stabilization pillar (21) is located midway between the top and the bottom of said Venturi pipe (22), and fits through two holes in said Venturi pipe (22) which are on the left side and the right side of said Venturi pipe; that said pipe stabilization pillar is perpendicular to said drive direction pillar (28) and that said Venturi pipe (22) includes a hole on its left side, and a hole on its right side, so that said pipe stabilization pillar (21) fits through both the holes on the left side and the right side of said Venturi pipe (22). 4. The human-powered watercraft of claim 3 further comprising connecting members (3) that connect said floating members (2) and are perpendicular to said floating members (2); anda middle beam (8) that connects said connecting members (3), and is located in between said floating members (2) and is perpendicular to said connecting members (3) and parallel to said floating members (2). 5. The human-powered watercraft of claim 2 further comprising drive stabilization links (57) that connect said Venturi pipe (22) to a small plate (56); and drive stabilization struts (26) that further connect said small plate (56) to said middle beam (8). 6. The human-powered watercraft of claim 5 further comprising a pipe stabilization bolt (23) which is placed on the lower end of said drive direction pillar (28) which is the end furthest below said plate and below the lowest part of said Venturi pipe (22) which is the part furthest below said plate. 7. The human-powered watercraft of claim 6 further comprising two foot platforms (48) and two foot platform mounts (50); where each of said foot platforms (48) is mounted on one of said foot platform mounts (50);and where said foot platform mounts (50) are connected to said gear system (12) in a way that allows said foot platform mounts (50) to rotate, and, by rotating, to transmit motive power to said gear system (12); so that said gear system (12) then transmits said motive power to said flexible drive shaft (9). 8. The human-powered watercraft of claim 7 further comprising two vertical handlebar grips (49); two upper flexible couplings (46) and two lower flexible couplings (47); and two coupling connectors (53) wherein each of said vertical handlebar grips (49) is attached to one of said upper flexible couplings (46), each of said upper flexible couplings (46) is attached to one of said coupling connectors (53) and each of said coupling connectors (53) is attached to one of said lower flexible couplings (47); and where each of said lower flexible couplings (47) is attached to one of said foot platform mounts (50); where the user may push on said vertical handlebar grips (49), thus imparting motive power to said vertical handlebar grips (49) and causing them to rotate around said upper flexible coupling (46);where motive power imparted to said vertical handlebar grips (49) is transmitted via said upper flexible coupling (46) to said coupling connector (53), causing said coupling connector (53) to move, and causing motive power to be transmitted from said coupling connector (53) to said lower flexible coupling (47); and from said lower flexible coupling (47) to said foot platform mounts (50), causing said foot platform mounts (50) to move. 9. The human-powered watercraft of claim 8 further comprising a steering support base (54) and steering support pole (55), where said steering support pole (55) is connected to each of said upper flexible couplings (46). 10. The human-powered watercraft of claim 9 further comprising one or more horizontal handlebar grips (37) which the user can grip with his hands. 11. The human-powered watercraft of claim 10 further comprising one or more bells (43) mounted on said horizontal handlebar grip (37). 12. The human-powered watercraft of claim 9 further comprising a cupholder support bar (44) and one or more cupholders (41) which fit into said cupholder support bar (44). 13. The watercraft of claim 5; further comprising junction members (4) that are on top of said floating members (2) and connect to said connecting members (3). 14. A method of providing motive power for a human-powered watercraft by pressing down on a foot platform (48) attached to a foot platform mount (50); which is connected to a lower system connection member (52); which then rotates in response to the pressure, and which is connected to a gear system (12); where said lower system connection member (52) causes the gears in said gear system (12) to turn, causing a flexible drive shaft (9) connected to said gear system (12) to move; where said flexible drive shaft (9) is connected to a Venturi pipe (22) which is a part of a Venturi Drive, said Venturi Drive further comprising; one or more propellers (29); a Venturi pipe (22); a drive direction pillar (28); and a plate; where said plate is placed horizontally and has a hole through which said drive direction pillar (28) can fit, and can rotate while fitting through;where said drive direction pillar (28) is round and fits through a hole in said plate; and through a hole in the top of said Venturi pipe (22) which is the part of said Venturi pipe (22) closest to said plate, and through another hole in the bottom of said Venturi pipe (22); which is the part of said Venturi pipe (22) furthest away from said plate,where said Venturi pipe (22) contains a hole on its top and another hole in its bottom through which said drive direction pillar (28) is capable of fitting, and also contains an opening on each of its horizontal ends, and the larger of said openings which is the opening closer to said gear system has a greater diameter than the smaller of said openings which is the opening further away from said gear system;where the diameter of said Venturi pipe (22) gradually decreases between the larger opening and the smaller opening;where said propeller (29) is located inside said Venturi pipe (22); and drives water from said larger opening in said Venturi pipe (22) to said smaller opening in said Venturi pipe (22);where said flexible drive shaft (9) connects to and transmits motive power to said propeller (29); causing said propeller (29) to turn and move the watercraft.
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