Oscillator with phase shift start stop controls

Claim 1

A SELECTIVELY OSCILLATING LOOP THAT OSCILLATES ONLY WHEN THE VALUE OF A VARIABLE IMPEDANCE WHICH IS COUPLED TO SAID OSCILLATING LOOP IS BOTH ABOVE A LOWER SET POINT AND BELOW AN UPPER SET POINT COMPRISING A FORWARD GAIN ELEMENT, A FEEDBACK MEANS COUPLED BETWEEN SAID INPUT AND SAID OUTPUT OF SAID FORWARD GAIN ELEMENT; MEANS FOR ESTABLISHING A FREQUENCY STANDARD, SAID MEANS BEING OPERABLY COUPLED TO SAID FEEDBACK MEANS; A VARIABLE IMPEDANCE MEANS VARIABLE THROUGH THREE RANGES OF IMPEDANCE, SAID FIRST RANGE BEING BELOW SAID FIRST POINT, SAID SECOND RANGE BEING BETWEEN SAID FIRST POINT AND SAID SECOND POINT AND SAID THIRD RANGE BEING ABOVE SAID SECOND POINT; WHEREBY SAID VARIABLE IMPEDANCE MEANS FORMS A PHASE SHIFTING MEANS OPERABLE THROUGH A FIRST, A SECOND AND A THIRD CONSECUTIVE PHASE RANGE WITH SAID FIRST, SECOND A THIRD PHASE RANGE RESPECTIVELY CORRESPONDING TO SAID FIRST, SECOND AND THIRD RANGE OF SAID VARIABLE IMPEDANCE, SAID SECOND RANGE BEING THE ONLY RANGE EFFECTIVE TO MAINTAIN SAID FEEDBACK MEANS AND SAID FORWARD GAIN MEANS IN OSCILLATIONS BY HAVING THE PROPER PHASE RELATIONSHIP.