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US 2004/0166746 A1Published application
Electric personal water craft
OwnerMark H. Krietzmaninventor
Life of this patent
Estimating the term…
Abstract
An electric personal water craft. The electric personal water craft produces its own electricity from an on-board fuel cell system. Hydrogen fuel is stored within the hull of the personal water craft. The heat produced by the fuel cell stack is dissipated to the marine environment for heat management of the fuel cell power system.
Claims18
A personal water craft comprising:
- a hull with a hollow portion;
- a fuel cell power system within the hull;
- at least one electric motor, within the hull, to receive power from the fuel cell power system;
- a hydrogen supply means for the fuel cell power system;
- an oxygen supply means for the fuel cell power system;
- a steering means for the personal water craft;
- a speed control means for the personal water craft;
- a propulsion module connected to each electric motor;
- and,
- at least one seat.
7 more elements
A personal water craft comprising:
- a hull with a hollow portion;
- a fuel cell power system within the hull;
- at least one electric motor, within the hull, to receive power from the fuel cell power system;
- a hydrogen supply means for the fuel cell power system;
- an oxygen supply means for the fuel cell power system;
- a steering means for the personal water craft;
- a speed control means for the personal water craft;
- a heat exchanger means between at least a portion of the fuel cell power system and the hull, whereby the hull is in thermal contact with surrounding water;
- a propulsion module connected to each electric motor;
- and,
- at least one seat.
8 more elements
A personal water craft comprising:
- a hull with a hollow portion;
- a fuel cell power system within the hull;
- a load splitter;
- at least two electric motors, within the hull, to receive power from the fuel cell power system via the load splitter;
- a hydrogen supply means for the fuel cell power system;
- an oxygen supply means for the fuel cell power system;
- a steering means for the personal water craft;
- a speed control means for the personal water craft;
- two rearward facing propulsion modules each connected to an electric motor;
- and,
- at least one seat.
8 more elements
A personal water craft comprising:
- a hull with a hollow portion;
- a fuel cell power system within the hull;
- a load splitter;
- at least one rearward electric motor, within the hull, to receive power from the fuel cell power system via the load splitter;
- at least two forward electric motors, within the hull, to receive power from the fuel cell power system via the load splitter;
- a hydrogen supply means for the fuel cell power system;
- an oxygen supply means for the fuel cell power system;
- a steering means for the personal water craft;
- a speed control means for the personal water craft;
- a propulsion module connected to each electric motor;
- and, at least one seat.
8 more elements
A method of electric propulsion for a personal water craft the method comprising:
- mounting a fuel cell power system within the hull of a personal water craft;
- providing a hydrogen supply to the fuel cell power system;
- providing an oxygen supply to the fuel cell power system;
- generating electricity from the fuel cell power system;
- and
- providing the fuel cell generated electricity to an electric motor which operates the propulsion means for the personal water craft.
3 more elements
Dependencies are inferred from the claim text.