Electrical pulse generator

Claim 1

AN ELECTRICAL PULSE GENERATOR FOR CONVERTING INPUT PULSES OF MECHANICAL ENERGY INTO OUTPUT PULSES OF ELECTRICAL ENERGY, COMPRISING IN COMBINATION, A LONGITUDINALLYMOVABLE PLUNGER-TYPE ARMATURE, A PAIR OF ANNULAR-RING PERMANENT MAGNETS AT OPPOSITE ENDS OF AND COAXIAL WITH SAID ARMATURE PROVIDING TWO PAIRS OF LONGITUDINALLY-SPACED UNLIKE POLES WITH THE ARMATURE IN A RETRACTED POSITION BRIDGING ONE PAIR IN A STRONG MAGNETIC FIELD, SAID MAGNETS FURTHER PROVIDING MEANS FOR POSITIONING AND GUIDING SAID ARMATURE IN ITS MOVEMENT, FLUID-PRESSURE OPERATED MEANS IN DRIVING CONNECTION WITH THE ARMATURE FOR IMPARTING THERETO SUDDEN LINEAR MOTION ALONG THE LONGITUDINAL AXIS THEREOF AND RAPID AXIAL TRAVEL TO ALTERNATIVELY BRIDGE THE OTHER PAIR OF MAGNET POLES IN OPPOSITE POLARITY RELATION, A PICKUP COIL CLOSELY SURROUNDING THE ARMATURE BETWEEN SAID MAGNETS FOR DERIVING ELECTRICAL PULSE OUTPUT FROM SAID GENERATOR IN RESPONSE TO SAID ARMATURE MOVEMENT, MEANS CONNECTED WITH THE ARMATURE FOR WITH-HOLDING MOVEMENT THEREOF IN RESPONSE TO FLUID PRESSURE APPLICATION BELOW A PREDETERMINED MAGNITUDE, AND MEANS PROVIDING SPACED INTERNAL ANNULAR POLE PIECES FOR SAID MAGNETS WITH INTERPOSED RINGS OF NON-MAGNETIC MATERIAL HAVING A COMMON INTERNAL DIAMETER OF THE ARMATURE WITH A SLIDING FIT.