Automatically controlled nuclear magnetic resonance frequency sweep oscillating detector device

Claim 2

IN VARIABLE FREQUENCY OSCILLATOR APPARATUS: VALVE MEANS INCLUDING FIRST MEANS, SECOND MEANS AND THIRD MEANS; FIRST CAPACITIVE MEANS CONNECTED BETWEEN SAID FIRST MEANS AND SAID SECOND MEANS OF SAID VALVE MEANS; FIRST TERMINAL MEANS; SECOND TERMINAL MEANS CONNECTED TO SAID THIRD MEANS OF SAID VALVE MEANS; VARIABLE RESONANT FREQUENCY CIRCUIT MEANS CONNECTED BETWEEN SAID FIRST MEANS OF SAID VALVE MEANS AND SAID FIRST TERMINAL MEANS; SECOND CAPACITIVE MEANS INCLUDING FIRST AND SECOND LEADS, SAID FIRST LEAD BEING CONNECTED TO SAID SECOND MEANS OF SAID VALVE MEANS; VOLTAGE VARIABLE CAPACITANCE MEANS CONNECTED BETWEEN SAID SECOND LEAD OF SAID SECOND CAPACITIVE MEANS AND SAID FIRST TERMINAL MEANS; THIRD TERMINAL MEANS CONNECTED TO SAID SECOND MEANS OF SAID VALVE MEANS; INPUT MEANS FOR SUPPLYING AN INPUT CONTROL SIGNAL CONNECTED TO SAID SECOND LEAD OF SAID SECOND CAPACITIVE MEANS; AND OUTPUT MEANS CONNECTED TO SAID SECOND MEANS OF SAID VALVE MEANS TO SUPPLY AN OUTPUT SIGNAL THEREFROM WHICH CHANGES IN FREQUENCY AS A FUNCTION OF THE CHARACTERISTICS OF SAID VARIABLE RESONANT FREQUENCY CIRCUIT MEANS;

Claim 3

IN NUCLEAR RESONANT INDICATING APPARATUS: NUCLEI CONTAINING MATERIAL HAVING A NUCLEAR RESONANT FREQUENCY WHEN PLACED IN A NON-MODULATED MAGNETIC FIELD OF APPROPRIATE STRENGTH TO DEFINE A RESONANT CONDITION THEREOF AND BEING ADAPTABLE FOR PLACEMENT IN A SUBSTANTIALLY CONSTANT MAGNETIC FIELD; FIRST MEANS CONNECTED IN OPERABLE RELATION TO SAID NUCLEI CONTAINING MATERIAL, SAID FIRST MEANS PROVIDING A PERIODICALLY MODULATED HIGH FREQUENCY FIELD TO SAID MATERIAL FOR PERIODICALLY INDUCING THE RESONANT CONDITION IN SAID MATERIAL; SECOND MEANS CONNECTED TO SAID FIRST MEANS, SAID SECOND MEANS PROVIDING AN OUTPUT PULSE UPON OCCURRENCE OF NUCLEAR RESONANCE OF SAID NUCLEI; THIRD MEANS FOR PROVIDING A DIGITAL OUTPUT INDICATIVE OF THE FREQUENCY AT WHICH NUCLEAR RESONANCE OCCURS; FOURTH MEANS CONNECTING SAID SECOND MEANS TO SAID THIRD MEANS FOR SUPPLYING THE OUTPUT PULSE TO SAID THIRD MEANS; AND AUTOMATIC SEARCH MEANS CONNECTED TO SAID SECOND MEANS FOR DETECTING THE ABSENCE OF A PERIODICAL OCCURRENCE OF SAID OUTPUT PULSE, SAID AUTOMATIC SEARCH MEANS ALSO BEING CONNECTED TO SAID FIRST MEANS FOR INCREASING THE RANGE OF MODULATION OF THE FIELD APPLIED TO SAID MATERIAL UNTIL SAID OUTPUT PULSE INDICATING NUCLEAR RESONANCE IS AGAIN DETECTED.

Claim 4

IN NUCLEAR RESONANT INDICATING APPARATUS: NUCLEI CONTAINING MATERIAL HAVING A NUCLEAR RESONANT FREQUENCY WHEN PLACED IN A NON-MODULATED MAGNETIC FIELD OF APPROPRIATE STRENGTH TO DEFINE A RESONANT CONDITION THEREOF AND BEING ADAPTABLE FOR PLACEMENT IN A SUBSTANTIALLY CONSTANT MAGNETIC FIELD; FIRST MEANS CONNECTED IN OPERABLE RELATION TO SAID NUCLEI CONTAINING MATERIAL, SAID FIRST MEANS PROVIDING A PERIODICALLY MODULATED HIGH FREQUENCY FIELD TO SAID MATERIAL FOR PERIODICALLY INDUCING THE RESONANT CONDITION IN SAID MATERIAL; SECOND MEANS CONNECTED TO SAID FIRST MEANS, SAID SECOND MEANS PROVIDING AN OUTPUT PULSE UPON OCCURRENCE OF NUCLEAR RESONANCE OF SAID NUCLEI; THIRD MEANS FOR PROVIDING A DIGITAL OUTPUT INDICATIVE OF THE FREQUENCY AT WHICH NUCLEAR RESONANCE OCCURS; FOURTH MEANS CONNECTING SAID SECOND MEANS TO SAID THIRD MEANS FOR SUPPLYING THE OUTPUT PULSE TO SAID THIRD MEANS; AND AUTOMATIC SEARCH MEANS CONNECTED TO SAID SECOND MEANS FOR DETECTING THE ABSENCE OF A PERIODICAL OCCURRENCE OF SAID OUTPUT PULSE, SAID AUTOMATIC SEARCH MEANS ALSO BEING CONNECTED TO SAID FIRST MEANS FOR INCREASING THE RANGE OF MODULATION OF THE FIELD APPLIED TO SAID MATERIAL UNTIL SAID OUTPUT PULSE INDICATING NUCLEAR RESONANCE IS AGAIN DETECTED.