Pneumatic explosion generator

Claim 1

A PNEUMATIC EXPLOSION GENERATOR FOR PRODUCING REPETITIVE, HIGH ENERGY ACOUSTIC PULSES UNDERWATER, COMPRISING: A HOUSING HAVING A CYLINDER AND A CYLINDER HEAD, A HOLLOW, CYLINDRICAL PISTON SLIDEABLY POSITIONED WITHIN SAID CYLINDER, SAID PISTON HAVING A PLURALITY OF EXHAUST PORTS CUT THROUGH ITS SIDEWALL NEAR ITS BOTTOM END, A PORTION OF THE EXTERIOR WALL OF SAID PISTON AND THE ADJACENT INTERIOR WALL OF SAID CYLINDER DEFINING A FIRST CHAMBER, THE INTERIOR OF SAID PISTON DEFINING A SECOND CHAMBER, AND THE TOP OF SAID PISTON AND SAID CYLINDER HEAD DEFINING A THIRD CHAMBER, MEANS FOR SUPPLYING AIR UNDER PRESSURE TO SAID FIRST CHAMBER FOR DRIVING SAID PISTON IN AN UPWARDLY DIRECTION, PORT MEANS FOR PROVIDING COMMUNICATION BETWEEN SAID FIRST CHAMBER AND SAID SECOND CHAMBER WHEN SAID PISTON IS IN ITS UPPERMOST POSITION, AND TRIGGER MEANS FOR ADMITTING AIR INTO SAID THIRD CHAMBER TO MOVE SAID PISTON IN A DOWNWARDLY DIRECTION UNTIL SAID EXHAUST PORTS ARE EXPOSED OUTSIDE OF SAID HOUSING THEREBY CAUSING THE AIR WITHIN SAID SECOND CHAMBER TO BE EXPELLED RAPIDLY ENOUGH TO FORM AN EXPLOSION, SAID PISTON BEING RESTORED TO ITS UPPERMOST POSITION WITHIN SAID HOUSING BY THE POTENTIAL ENERGY STORED IN THE COMPRESSING OF AIR TRAPPED WITHIN SAID FIRST CHAMBER DURING THE DOWNWARD MOVEMENT OF SAID PISTON WHEREBY SAID GENERATOR MAY BE RECYCLED BY ACTUATING SAID TRIGGERING MEANS.