US PATENT SUBCLASS 324 / 420
.~.~ To evaluate contact chatter

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

415  DF  ELECTROMECHANICAL SWITCHING DEVICE {4}
418  DF  .~ Relay {5}
420.~.~ To evaluate contact chatter

DEFINITION

Classification: 324/420

To evaluate contact chatter:

(under subclass 418) Subject matter wherein the resonant frequency at which the relay contact surfaces make and break a circuit is determined.