Acoustic wave impulse generator repeater

Claim 1

A PNEUMATIC ACOUSTICAL WAVE-PRODUCING REPEATER DEVICE FOR SUBMERSION INTO A BODY OF WATER TO EMIT A LARGE AMOUNT OF ACOUSTICAL ENERGY INTO THE WATER IN THE FORM OF A REPEATABLE PULSE FOR SEISMIC EXPLORATION OF THE EARTH UNDER THE BODY OF WATER COMPRISING A CONTAINER HAVING AN EXHAUST PORT AT THE END OF AN INWARDLY EXTENDING CYLINDRICAL SURFACE, SAID EXHAUST COMMUNICATING DIRECTLY WITH THE WATER IN WHICH SAID REPEATER DEVICE IS SUBMERGED; MEANS FOR FEEDING AIR UNSER PRESSURE TO SAID CONTAINER; MEANS FOR INSTANTANEOUSLY RELEASING SAID COMPRESSED AIR FROM SAID CONTAINER, SAID INSTANTANEOUS RELEASING MEANS COMPRISING PISTON MEANS SLIDABLE WITHIN SAID CYLINDRICAL SURFACE FOR CONTAINING SAID COMPRESSED AIR AND POSITIONABLE TO UNCOVER SAID EXHAUST PORT; AND MEANS CONNECTED TO SAID PISTON MEANS AND SUBJECTED TO AIR PRESSURE WITHIN SAID CONTAINER WHEN SAID CONTAINER IS SUBMERGED FOR SLIDING SAID PISTON MEANS AT HIGH ACCELERATION WITHIN SAID CYLINDRICAL SURFACE IN A DIRECTION TOWARD SAID PORT PRIOR TO UNCOVERING SAID PORT, TO THEREBY ABRUPTLY OPEN SAID PORT BY SAID ACCELERATED PISTON MEANS TRAVELLING IN THE SAME DIRECTION AS THE COMPRESSED AIR TO BE RELEASED FOR INSTANTANEOUSLY RELEASING THE COMPRESSED AIR DIRECTLY INTO SAID WATER FOR EMITTING AN INTENSE ACOUSTICAL PULSE INTO THE WATER.