Abstract

The invention relates to a jet stator assembly for a jet watercraft, where vanes of the stator hub are captured at their vane tips by two stator housing sections having fingers that alternately mesh together about the vane tips. Thus, manufacturing of a jet stator is simplified because the stator hub can be fabricated independently of the housing, and then easily and securely assembled into a jet stator by meshing together the housing sections.

IPC Classes  ?

• B63H 11/103 - Marine propulsion by water jets the propulsive medium being ambient water having means for deflecting jet or influencing cross-section thereof having means to increase efficiency of propulsive fluid, e.g. discharge pipe provided with means to improve the fluid flow
• B63H 11/08 - Marine propulsion by water jets the propulsive medium being ambient water by means of pumps of rotary type

Abstract

The invention relates to a jet unit assembly (1) comprising a jet unit (10), an electric motor (20), and a housing (30). The jet unit (10) comprises an intake (11) and a jet outlet (12), and defines a flow passage (13) therethrough with an impeller (14) disposed therein. The housing (30) comprises a proximal end, a distal end, a periphery (38) extending therebetween, a region having an underside opening (35), and a cavity (34) internal of the periphery (38). The intake (11) is secured to the housing (30) within the underside opening (35). Sealing of the housing (30) can allow it to define a coolant tank within the cavity (34) which facilitates circulation of liquid coolant to cool the electric motor (20). The housing (30) may also provide for convenient mounting of the electric motor (20) and the jet outlet (12).

IPC Classes  ?

• B63H 11/08 - Marine propulsion by water jets the propulsive medium being ambient water by means of pumps of rotary type
• B63H 11/103 - Marine propulsion by water jets the propulsive medium being ambient water having means for deflecting jet or influencing cross-section thereof having means to increase efficiency of propulsive fluid, e.g. discharge pipe provided with means to improve the fluid flow
• B63H 21/17 - Use of propulsion power plant or units on vessels the vessels being motor-driven by electric motor
• H02K 5/20 - Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium

Abstract

A control system for a jet propelled watercraft comprising a hull with a transom and water jet unit, the control system comprising, as a transom mountable unit, a tiller controlled thrust vectoring nozzle and an actuator controlled jet deflection member for forward direction steering and reversing respectively of the jet propelled watercraft.

IPC Classes  ?

• B63H 11/113 - Pivoted outlet
• B63H 11/11 - Direction control of propulsive fluid with bucket or clamshell-type reversing means
• B63H 20/12 - Means enabling steering
• B63H 25/02 - Initiating means for steering

Goods & Services

Electric motors and parts thereof, not for land vehicles; boat motors; motors for boats; propulsion mechanisms, other than for land vehicles; marine engines. Batteries for vehicles; battery chargers; nautical apparatus and instruments; scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking, life-saving and teaching apparatus and instruments; marine compasses; marine depth finders; display screens; underwater housings and enclosures for cameras; underwater enclosures for photographic lenses; laser distance meters and angle finders; signalling buoys; signal processors; lifesaving rafts; global positioning system tracking and location devices; solar batteries; inflatable dinghies [lifeboats]; lithium batteries. Jet boats; water vehicles; yachts; boats; boat propellers; steering wheels for boats; small jet-propelled watercraft.

Abstract

The invention relates to a reversable jet powered watercraft (1000) comprising a hull (3) and a jet pump unit (4) secured to the hull (3). The jet pump unit (4) presents a water intake opening (20) on the underside of the hull (3) and a water outlet opening (21) at the rear of the hull (3), the openings connected by a duct (22) to define a passage for water. An impeller (23) in the passage drives water through the duct (22). At least one fin (10) is mounted in a rotatable manner relative to the intake opening (20) to control and to change direction of the flow of water passing through the intake opening (20), the rotatable position of the fin(s) (10) able to be controlled by a user of the watercraft (1000). The impeller (23) can be rotated in a first direction to cause water to flow through the passage from intake opening (20) to outlet opening (21) corresponding to a forward direction of travel of the watercraft (1000) and in a second direction to cause water to flow out the intake opening (20) corresponding to a reverse direction of travel of the watercraft (1000). Water leaving the intake (20) can be changed in direction by the fin(s) (10) to cause the watercraft (1000) to be directionally controlled.

IPC Classes  ?

• B63H 11/04 - Marine propulsion by water jets the propulsive medium being ambient water by means of pumps
• B63H 11/10 - Marine propulsion by water jets the propulsive medium being ambient water having means for deflecting jet or influencing cross-section thereof
• B63H 11/113 - Pivoted outlet
• B63H 25/46 - Steering or dynamic anchoring by jets
• B63H 11/117 - Pivoted vane

Goods & Services

Electric motors and parts thereof, not for land vehicles; boat motors; motors for boats; propulsion mechanisms, other than for land vehicles; marine engines. Batteries for vehicles; battery chargers; nautical apparatus and instruments; scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking, life-saving and teaching apparatus and instruments; global positioning system tracking and location devices; solar batteries; inflatable dinghies [lifeboats]; lithium batteries. Jet boats; water vehicles; yachts; boats; boat propellers; steering wheels for boats; small jet-propelled watercraft.

Abstract

A control system for a jet propelled watercraft comprising a hull with a transom and water jet unit, the control system comprising, as a transom mountable unit, a tiller controlled thrust vectoring nozzle and an actuator controlled jet deflection member for forward direction steering and reversing respectively of the jet propelled watercraft.

IPC Classes  ?

• B63H 11/113 - Pivoted outlet
• B63H 11/11 - Direction control of propulsive fluid with bucket or clamshell-type reversing means