The human powered hydrofoil bicycle includes multiple subsystems integrated together including a structural frame subsystem with associated steering and tiller module, a hydrofoil subsystem to provide vehicle lift, and a powertrain subsystem. The structural frame subsystem may be fitted with buoyancy modules to provide the overall vehicle with a near neutrally buoyant character. The structural frame subsystem also supports a seat for an operator and provides structural support for the steering and tiller module for the hydrofoil subsystem and the drivetrain subsystem. The hydrofoil subsystem includes multiple hydrofoil elements at lowermost portions of the vehicle. These hydrofoil elements generally include in a preferred embodiment a larger rear foil and a smaller front foil. The powertrain subsystem generally includes pedals rotatably supported on the vehicle at a convenient location for engagement and driving by feet of an operator. Power transmission elements extend from the pedals down to a prime mover such as a propeller.

The human powered hydrofoil bicycle includes multiple subsystems integrated together including a structural frame subsystem with associated steering and tiller module, a hydrofoil subsystem to provide vehicle lift, and a powertrain subsystem. The structural frame subsystem may be fitted with buoyancy modules to provide the overall vehicle with a near neutrally buoyant character. The structural frame subsystem also supports a seat for an operator and provides structural support for the steering and tiller module for the hydrofoil subsystem and the drivetrain subsystem. The hydrofoil subsystem includes multiple hydrofoil elements at lowermost portions of the vehicle. These hydrofoil elements generally include in a preferred embodiment a larger rear foil and a smaller front foil. The powertrain subsystem generally includes pedals rotatably supported on the vehicle at a convenient location for engagement and driving by feet of an operator. Power transmission elements extend from the pedals down to a prime mover such as a propeller.

A modular hybrid propulsion unit is disclosed that is mountable to a watercraft. According to an example, the modular hybrid propulsion unit includes a housing configured to fit within a complementary housing receiver on a topside of the watercraft, and a rotational output coupling configured to rotationally engage with a rotational input coupling for a propeller of the watercraft. The propulsion unit further includes an electric motor within the housing, the electric motor having a motor shaft connected to the rotational output coupling for providing an electrically powered rotational input to the rotational output coupling. The propulsion unit further includes a crank having one or more crank arms. The crank is connected to the rotational output coupling for providing a human powered rotational input to the rotational output coupling independent of the electrically powered rotational input by the electric motor.

A watercraft having a body with an opening for a user, a seat, at least one drive mechanism placed at least partially within the opening; an intake configured to allow a flow of water from a body of water surrounding the watercraft; a pump configured receive the flow of water and accelerate the flow of water, and a user controlled discharge configured to receive the flow of accelerated water from the pump and discharge the accelerated water to the water surrounding the watercraft such that the watercraft moves in a direction chosen by the user.

The human powered hydrofoil bicycle includes multiple subsystems integrated together including a structural frame subsystem with associated steering and tiller module, a hydrofoil subsystem to provide vehicle lift, and a powertrain subsystem. The structural frame subsystem may be fitted with buoyancy modules to provide the overall vehicle with a near neutrally buoyant character. The structural frame subsystem also supports a seat for an operator and provides structural support for the steering and tiller module for the hydrofoil subsystem and the drivetrain subsystem. The hydrofoil subsystem includes multiple hydrofoil elements at lowermost portions of the vehicle. These hydrofoil elements generally include in a preferred embodiment a larger rear foil and a smaller front foil. The powertrain subsystem generally includes pedals rotatably supported on the vehicle at a convenient location for engagement and driving by feet of an operator. Power transmission elements extend from the pedals down to a prime mover such as a propeller.

The present invention relates to an improved vehicle for use in water, in particular into the sea. More specifically, the invention relates to the structure of a vehicle of type called configured to have a hydrodynamic profile and to allow a user to turn with greater speed.

An oscillating reversible motor providing a novel means of converting oscillating motion into selectable clockwise or counterclockwise rotary motion. More particularly, the invention presents a novel approach to a foot or hand pedal driven apparatus with which a traditional rotary water propeller or other output device may be employed in both forward and reverse directions of relative motion.

The foot pedal-powered impeller system comprises a foot crank coupled to an impeller drive via a vertical drive shaft. The foot crank, mounted on the top surface of a water craft, may comprise two pedals that couple to a central spindle via crank arms. The spindle may pass through a right angle gear box which translates rotational motion of the spindle into rotational motion of the drive shaft. The drive shaft may turn a shaft gear on the underside of the water craft which engages an impeller tube gear and turns an impeller tube. An impeller mounted within the impeller tube may force water to enter the front of the impeller drive via an intake nozzle, pass through the impeller tube, and exit through a discharge nozzle. The discharge of water may move the water craft.

An oscillating reversible motor providing a novel means of converting oscillating motion into selectable clockwise or counterclockwise rotary motion. More particularly, the invention presents a novel approach to a foot or hand pedal driven apparatus with which a traditional rotary water propeller or other output device may be employed in both forward and reverse directions of relative motion.

A powered watercraft system including a watercraft body, a propulsion system, a sensor configured to measure a value indicative of a manually-generated time-variable first propulsive force resulting from a body motion of the user to move the watercraft body, and a controller configured control the propulsion system to generate a second propulsive force for powering the watercraft body based on the value indicative of the first propulsive force, the generated second propulsive force being at least partially contemporary with the first propulsive force.