Hydrojet propulsion apparatus

Claim 1

MARINE PULSE JET PROPULSION APPARATUS COMPRISING A COMBUSTION CHAMBER, FLAP VALVE MEANS FOR ADMITTING A COMBUSTIBLE AIR AND FUEL MIXTURE INTO SAID COMBUSTION CHAMBER, MEANS FOR IGNITING SAID MIXTURE WHEN SAID COMBUSTION CHAMBER IS FILLED THEREWITH IN ORDER TO PRODUCE HOT GASES, A TAIL PIPE HAVING A CROSS SECTIONAL AREA SUBSTANTIALLY LESS THAN THAT OF SAID COMBUSTION CHAMBER, SAID COMBUSTION CHAMBER TERMINATING IN SAID TAIL PIPE AT THE END OF SAID COMBUSTION CHAMBER DISPOSED OPPOSITE SAID FLAP VALVE MEANS, AND A WATER ACCELERATOR SECURED TO AND ENVELOPING THE END PORTION OF SAID TAIL PIPE DISPOSED OPPOSITE SAID COMBUSTION CHAMBER, SAID WATER ACCELERATOR COMPRISING AT LEAST ONE BREATHER TUBE CONNECTED TO SAID TAIL PIPE ADJACENT SAID OPPOSITE END PORTION THEREOF FOR PROVIDING SAID TAIL PIPE WITH AIR, A WATER INLET, A COMBINING CHAMBER, SAID WATER INLET SERVING TO CONDUCT WATER INTO SAID COMBINING CHAMBER WHEN SAID APPARATUS IS IN AN OPERATIVE POSITION, AND A DISCHARGE TUBE SERVING TO CONDUCT INTO THE ATMOSPHERE SAID HOT GASES AND WATER FROM SAID WATER ACCELERATOR.