Electromagnetic vibrator

Claim 1

AN ELECTROMAGNETIC VIBRATOR ASSEMBLY COMPRISING, IN COMBINATION, A PAIR OF TUNING VIBRATORS POSITIONED IN SPACED PARALLEL PLANES AND OPERATING IN PAHSE OPPOSITION TO EACH OTHER WITH EQUAL AMPLITUDES OF VIBRATION; EACH OF SAID VIBRATORS INCLUDING AN ELONGATED C-SHAPED STRIP AND AN ELONGATED E-SHAPED STRIP, THE OPEN ENDS OF THE TWO STRIPS BEING AT RESPECTIVE OPPOSITE ENDS OF THE ASSOCIATED VIBRATOR AND THE END OF AT LEAST ONE LEG OF EACH E-SHAPED STRIP BEING FIXEDLY CONNECTED TO THE BIGHT OF THE ASSOCIATED C-SHAPED STRIP; A RESPECTIVE MAGNETIC MASS SECURED TO THE FIXEDLY INTERCONNECTED ENDS OF THE TWO STRIPS OF EACH VIBRATOR; A COMMON STATIONARY SUPPORT FOR THE TWO VIBRATORS SECURED TO AND INTERCONNECTING, AT THE FREE ENDS THEREOF, ANOTHER LEG OF EACH E-SHAPED STRIP; AND A RESPECTIVE DRIVE COIL FOR EACH VIBRATOR FIXEDLY MOUNTED ON THE STATIONARY MEMBER MOUNTING SAID ASSEMBLY; SAID DRIVE COIL ELECTROMAGNETICALLY COOPERATING WITH THE RESPECTIVE MAGNETIC MASSES; THE MASS OF EACH VIBRATOR BEING SO DISTRIBUTED THAT THE CENTER OF GRAVITY THEREOF IS SUBSTANTIALLY IN COINCIDENCE WITH THE OSCILLATION AXIS OF THE RESPECTIVE VIBRATOR.