US PATENT SUBCLASS 361 / 283.3
.~.~.~.~ By differential capacitor

Current as of: June, 1999
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361 /   HD   ELECTRICITY: ELECTRICAL SYSTEMS AND DEVICES

271  DF  ELECTROSTATIC CAPACITORS {4}
277  DF  .~ Variable {4}
280  DF  .~.~ Responsive to external condition {6}
283.1  DF  .~.~.~ Pressure {3}
283.3.~.~.~.~ By differential capacitor

DEFINITION

Classification: 361/283.3

By differential capacitor:

(under subclass 283.1) Subject matter in which the pressure condition is sensed by two similar sets of fixed plates and one set of movable plates so arranged that when the movable plate is moved, the capacitance of one section is increased while the capacitance of the other section is decreased.