Augmented-signal mechanical wave depth gauge

Claim 1

LIQUID LEVEL INDICATING MEANS COMPRISING (A) FIRST AND SECOND ELONGATED SONIC PULSE TRANSMITTING ELEMENT EXTENDING INTO THE LIQUID, (B) MEANS FOR TRANSMITTING MECHANICAL PULSES ALONG SAID FIRST ELEMENT IN ONE DIRECTION AND INTO THE LIQUID, (C) A SUBSTANTIAL PORTION OF SAID FIRST ELEMENT BEING DISPLACED IN A LIQUID AT SUCH AN ANGLE THAT A PULSE TRANSMITTED ALONG THE ELECTRODE TRAVELS A SUBSTANTIAL HORIZONTAL DISTANCE WHILE TRANSVERSING SAID PORTION, AND PRODUCES A CORRESPONDING WAVE FRONT IN THE LIQUID HAVING A SUBSTANTIAL HORIZONTAL COMPONENT OF MOTION, (D) A PORTION OF SAID SECOND ELEMENT BEING ADJACENT SAID SUBSTANTIAL PORTION OF THE FIRST ELEMENT AND AT LEAST GENERALLY PARALLEL THERETO, WHEREBY SAID MOVING WAVE FRONT OF THE LIQUID PRODUCES A PULSE IN SAID SECOND ELEMENT MOVING IN THE SAME GENERAL DIRECTION AS SAID WAVE FRONT, (E) TRANSDUCER MEANS AT THE END OF SAID SECOND ELEMENT TOWARD WHICH SAID PULSES ARE MOVING, FOR CONVERTING SAID PULSES TO ELECTRIC PULSES INDICATIVE OF THE DEPTH OF THE LIQUID.