Multiple piston two-stage light gas launcher

Claim 1

A MULTIPLE PISTON TWO-STAGE GAS LAUNCHER INCLUDING: (A) A BARREL TO ENGAGE A PROJECTILE TO BE FIRED THEREFROM, (B) A PUMP TUBE JOINED TO ONE END OF SAID BARREL, (C) A PISTON CHAMBER JOINED TO ONE END OF SAID PUMP TUBE, (D) SAID PUMP TUBE AND SAID PISTON CHAMBER BEING MAINTAINED UNDER FLUID PRESSURE, (E) A FIRST PISTON SLIDABLY DISPOSED WITHIN SAID CHAMBER AND LOCATED AT ONE END OF SAID CHAMBER ADJACENT THE JUNCTURE OF SAID PISTON CHAMBER WITH SAID PUMP TUBE, (F) A SECOND PISTON SLIDABLY DISPOSED WITHIN SAID PISTON CHAMBER AT THE OTHER END THEREOF AND SPATIALLY SEPARATED FROM SAID FIRST PISTON AS A RESULT OF THE FLUID PRESSURE WITHIN SAID PISTON CHAMBER, (G) MEANS INCLUDING AN EXPLOSION CHAMBER ADJACENT ONE END OF SAID PISTON CHAMBER ADJACENT SAID SECOND PISTON FOR DRIVING SAID SECOND PISTON TOWARD SAID PROJECTILE THEREBY ALSO DRIVING SAID FIRST PISTON TOWARD SAID PROJETILE CERATING A FIRST COMPRESSION WAVE RESULTING FROM MOVEMENT OF SAID FIRST PISTON THAT INITIATES PROJETILE MOVEMENT IN THE BARREL AND A SECOND COMPRESSION WAVE RESULTING FROM MOVEMENT OF SAID SECOND PISTON THAT FURTHER INCREASES THE VELOCITY OF SAID PROJECTILE, (H) SAID SPATIALLY SEPARATED PISTONS HAVING AN AXIAL SEGMENT THEREOF WITH A DIAMETER LARGER THAN THE DIAMETER OF THE PUMP TUBE THROUGH WHICH THEY TRAVEL WHEREBY SAID AXIAL SEGMENT ACTS AS A SEAL DURING TRAVEL DOWN SAID PUMP TUBE, (I) THE GAS PRESSURE IN SAID EXPLOSION CHAMBER IS GREATER THAN THE GAS PRESSURE IN SAID PISTON CHAMBER, (J) AN ANNULAR SEAL BETWEEN SAID PISTON CHAMBER AND SAID PUMP TUBE, AND (K) SAID AXIAL SEGMENTS OF SAID PISTONS EXTENDING INTO ENGAGEMENT WITH SECTIONS OF SAID PISTON CHAMBER AND SEAL RESPECTIVELY, SAID LAST NAMED SECTIONS HAVING AN INSIDE DIAMETER GREATER THAN THE INSIDE DIAMETER OF SAID PISTON CHAMBER AND SAID PUMP TUBE WHEREBY SAID PISTONS ARE RESTRAINED FROM MOVEMENT TOWARD SAID PROJECTILE BEFORE FIRING.