A water-jet propulsion unit includes a body, an impeller for moving water, the impeller disposed in an impeller tunnel, an impeller shaft for driving the impeller, a first bearing housing to support the impeller shaft on the body, and a jet nozzle for forming a water jet. The body comprises a shaft opening for the impeller, a flow duct having a first contact surface, an inlet opening, and an outlet opening, the planes of which are at an angle α relative to each other. The impeller tunnel has a first end comprising a planar second contact surface and a second end comprising a planar third contact surface to seal the impeller tunnel between the body and the jet nozzle. The second and third planar contact surfaces of the impeller tunnel are arranged at an angle relative to each other. The impeller shaft is adapted for alternative types of installation by turning the impeller tunnel through 180° about the rotational axis of the impeller shaft. Support equipment supports the impeller shaft on the body in the alternative positions.

A battery enclosure for a personal watercraft is provided. Different configurations of the battery enclosure are disclosed, as well as different arrangements of the battery enclosure within the personal watercraft and with respect to other features of the personal watercraft. According to one embodiment, a personal watercraft includes a deck and a hull defining an interior volume. An electric motor is housed within the interior volume, the electric motor being operable to rotate a drive shaft. A battery pack having a battery enclosure housing one or more batteries is also positioned within the interior volume. A portion of at least one battery of the one or more batteries is positioned vertically above the drive shaft.

A jet pump assembly includes a marine engine, a jet drive and a shield adapted to be secured to a transom of a watercraft. The shield has arms to which the marine engine is secured and legs to which the jet drive is secured, the arms and legs extending in opposite directions. The shield has a flange adapted to be secured to the transom of the watercraft. The shield covers an opening in the transom through which the jet pump assembly is passed during assembly. A gasket between the shield and transom prevents water from entering the watercraft.

A personal watercraft comprises a deck having coupled thereto a hull defining a bottom wall, a rear wall and a water intake extending from the bottom wall to the rear wall, and a jet propulsion system. The jet propulsion system comprises a housing coupled to the rear wall and defining an inlet to receive water from the water intake, a venturi, and an outlet to expel the water, and comprises a rim-driven motor disposed within the housing between the inlet and the venturi. The rim-driven motor defines a center axis and comprises a stator coupled to the housing, a rotor disposed radially inwardly of the stator relative to the center axis, and impeller blades coupled to the rotor and projecting towards the center axis, the rotor and the impeller blades rotatable about the center axis to draw the water via the inlet and expel the water via the outlet.

A multipurpose maintenance tool for a mechanical assembly. The tool includes a central body and an elongated shank extending in a longitudinal direction from the central body to a lever end. A foreign object removing element has a foreign body engaging surface. The element extends from the central body generally opposite the shank. A fastener engaging formation is formed on the shank, the removing element, and/or the central body. The formation is sized and shaped for engaging a fastener on the assembly to selectively tighten and loosen the fastener. A lateral extension extends from the central body to span an opening in the assembly and engage opposite margins adjacent the opening. As the shank is pivoted about the extension, the removal surface pivots about the lateral extension in a direction corresponding to the angular direction of the shank to dislodge foreign objects from the opening in the assembly.

A personal watercraft is disclosed including a flotation portion, a strut extending from the flotation portion, and a motor pod is disposed along the strut with an electric motor operably coupled to a driveshaft. A hydrojet unit is removably attached to the motor pod and includes an inlet portion removably attached to the motor pod and a substantially cylindrical housing. The inlet portion includes a substantially conical motor interface with a shaft through-hole for receiving the driveshaft therein, one or more fins extending outwardly from the conical motor interface, and at least one ring encircling the conical motor interface and connecting to each of the one or more fins for inhibiting objects from passing through the inlet region. The housing defines a fluid flow path to an outlet portion. The hydrojet unit includes an impeller coupled to the driveshaft and a stator disposed within the housing.

An electrically-propelled marine vehicle and method of making same, including providing a hull of the marine vehicle and mounting a submersible electric thruster to the hull. The thruster includes a stator assembly and a rotor assembly. The rotor assembly forms an internal cavity with a plurality of magnets arranged radially outwardly of the internal cavity. The stator assembly includes electrical windings that are disposed within the internal cavity of the rotor assembly. The thruster is configured to allow the internal cavity to be flooded with water when the thruster is submerged, and the electrical windings are covered by a protective barrier that prevents the flooded water from contacting the windings. The thruster of the marine vehicle is thus water cooled, and the electromotive forces provided by the windings generate sufficient thrust to propel the marine vehicle through the water.

The invention relates to an electrically assisted craft which is intended to allow a user to be transported on water, the invention notably finding an application in the field of surfboards, paddleboards or else sailboards, and in the field of kayaks or canoes.

The craft comprises a first and a second housing (4, 5) formed in the craft, propulsion means (3) able to allow the craft to travel over or in the water, an electrical power source arranged inside a first watertight enclosure (1) housed inside the first housing (4) and provided with first electrical-connection means (8), and an electrical motorization system arranged in a second watertight enclosure (2) housed inside the second housing (5) and provided with second electrical-connection means, the source and the electric motorization system being electrically connected by the first and second connection means, the electric motorization system also being connected to the propulsion means, so as to allow the propulsion means to be driven when the drive system is powered with electrical energy by the source.

The first and second enclosures (1, 2) are fixed removably in the first and second housings (4, 5) respectively, the first and second housings (4, 5) respectively having a first and a second outputs allowing the passage of the first and second electric connection means respectively, and being configured to allow direct connection between the first and second electric connection means at the level of the first and/or of the second outputs.

The invention relates to a watercraft comprising an at least partly elastic and preferably inflatable casing (1), in particular a casing which surrounds an inner region. The watercraft has a base (2), an energy storage device (6), and a drive device which is secured to the base and comprises a drive unit (4) that is located in the water during operation, the flow of water produced by the drive unit during operation being controllable by means of a controller. The drive device is releasably secured to the base as a module comprising the energy storage device (6), which is designed as part of the module, such that the module can be removed as a structural unit.

A battery enclosure for a personal watercraft is provided. Different configurations of the battery enclosure are disclosed, as well as different arrangements of the battery enclosure within the personal watercraft and with respect to other features of the personal watercraft. According to one embodiment, a personal watercraft includes a deck and a hull defining an interior volume. An electric motor is housed within the interior volume, the electric motor being operable to rotate a drive shaft. A battery pack having a battery enclosure housing one or more batteries is also positioned within the interior volume. A portion of at least one battery of the one or more batteries is positioned vertically above the drive shaft.