Patent ID: 7926587

Claim:
A method of generating a pulsed cutting jet in a water medium, said method comprising the steps of: filling a tank with oxidizer to a predetermined level; filling the tank with a cutting fluid to a predetermined level; compressing the oxidizer and the cutting fluid; injecting fuel into the tank adjacent to the cutting fluid; igniting the fuel to generate a combustion gas within the tank thereby creating a pressure within the tank; venting the tank; discharging with said venting step by the created pressure the combustion gas from a nozzle in fluid communication with the tank to the water medium; discharging by the created pressure a portion of the cutting fluid from the nozzle; forming a cutting jet from the cutting fluid in the water medium; removing remaining of the combustion gas from the chamber; and repeating to a predetermined amount and subsequent to the removal step, the steps of said method thereby increasing the force of the formed cutting jet of said forming step to be the pulsed cutting jet.