US PATENT SUBCLASS 324 / 687
.~.~.~.~ Having fringing field coupling

Current as of: June, 1999
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324 /   HD   ELECTRICITY: MEASURING AND TESTING

600  DF  IMPEDANCE, ADMITTANCE OR OTHER QUANTITIES REPRESENTATIVE OF ELECTRICAL STIMULUS/RESPONSE RELATIONSHIPS {8}
649  DF  .~ Lumped type parameters {6}
658  DF  .~.~ Using capacitive type measurement {10}
686  DF  .~.~.~ With a capacitive sensing means {4}
687.~.~.~.~ Having fringing field coupling

DEFINITION

Classification: 324/687

Having fringing field coupling:

(under subclass 686) Subject matter wherein the sensing means is located in close proximity to a test object and produces an electric field which links or couples the test object to itself, with a change in the electric field caused by the object being utilized to determine a characteristic of the test object.

SEE OR SEARCH THIS CLASS, SUBCLASS:

632, for measuring or testing distributive type parameters using field coupling apparatus.