Electricity: measuring and testing – Magnetic – Displacement
Patent
1984-02-13
1986-08-12
Karlsen, Ernest F.
Electricity: measuring and testing
Magnetic
Displacement
324202, 324260, G01B 714, G01R 3500, G01R 3300
Patent
active
046058974
ABSTRACT:
A method for measurement of distance using the curl-free vector potential radiation field. The system includes current-carrying apparatus for generating a predominantly curl-free vector potential field and apparatus for modulating the current applied to the generating apparatus. The receiving apparatus includes a detecting apparatus with observable properties that vary with the application of an applied curl-free vector potential field, a demodulation apparatus for determining the magnitude of the curl-free vector potential field. The magnitude of the detected curl-free magnetic vector potential field can determine the distance from apparatus generating predetermined periodic changes in the curl-free vector potential field. The vector potential field can be established in conducting and opaque materials which are not capable of transmitting typical electromagnetic radiation.
REFERENCES:
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Aharonov et al, "Significance of Electromagnetic Potentials in the Quantum Theory", Physical Review, vol. 115, No. 3, pp. 485-491, 8/1959.
Aharonov et al, "Further Considerations on Electromagnetic Potentials in the Quantum Theory", Physical Review, vol. 123, No. 4, pp. 1511-1524, 8/1961.
Josephson, "Coupled Superconductors", Review of Modern Physics, 1/1964, pp. 216-220.
Feynman et al, "The Feynman Lectures on Physics", Addison-Wesley, Reading, Mass., pp. 15-6 to 15-14 and 21-1 to 21-19.
McCall et al, "A Linear Position Transducer . . . ", IEEE Transactions on Instrumation and Measurement, vol. IM26, No. 2, 6/1977.
Holloway William W.
Honeywell Inc.
Karlsen Ernest F.
Snow Walter E.
Solakian John S.
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