Seismic pulse generator using combustible gas

Claim 1

A SEISMIC SOURCE FOR OPERATING AT WATER-COVERED LAYERS OF THE EARTH FOR CONVERTING THE ENERGY OF AN EXPLOSIVE GAS TO SEISMIC WAVES, COMPRISING: A HEAVY UPPER REACTION PLATE HAVING A RECESS AROUND THE OUTER EDGE OF THE UPPER SURFACE THEREOF; A TOROIDAL RESILIENT SEALING MEMBER IN SAID RECESS; A CURVED DISHED EARTH COUPLING LOWER MEMBER EXTENDING UP AND OVER SAID SEALING MEMBER AND ENGAGING THE UPPER PORTION OF SAID SEALING MEMBER WHEREBY SAID LOWER MEMBER, SAID REACTION PLATE, AND SAID SEALING MEMBER FORM A CLOSED CHAMBER; AT LEAST ONE GAS INLET MEANS IN FLUID COMMUNICATION WITH SAID CLOSED CHAMBER FOR INJECTION OF AN EXPLOSIVE GAS INTO SAID CLOSED CHAMBER; AT LEAST ONE SPARK-PRODUCING MEANS IN FLUID COMMUNICATION WITH SAID CLOSED CHAMBER FOR IGNITING EXPLOSIVE GAS IN SAID CLOSED CHAMBER; EXHAUST PORT MEANS EXTENDING THROUGH SAID REACTION PLATE; AND VALVE MEANS ON SAID REACTION PLATE NORMALLY CLOSING SAID EXHAUST PORT AND MEANS ADAPTED TO OPEN SAID EXHAUST PORT MEANS RESPONSIVE TO A GIVEN PRESSURE WITHIN SAID CLOSED CHAMBER.