US PATENT SUBCLASS 335 / 252
.~.~.~ With vibrating armature

Current as of: June, 1999
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335 /   HD   ELECTRICITY: MAGNETICALLY OPERATED SWITCHES, MAGNETS, AND ELECTROMAGNETS

209  DF  MAGNETS AND ELECTROMAGNETS {10}
220  DF  .~ With magneto-mechanical motive device (e.g., electromagnet with armature) {21}
243  DF  .~.~ Alternating current type {5}
252.~.~.~ With vibrating armature

DEFINITION

Classification: 335/252

(under subclass 243) Subject matter wherein the armature of the alternating current electromagnet is mounted to have a

back and forth or vibration movement responsive to the alternation of the alternating current.

(1) Note. The armature may vibrate because the electromagnet is supplied with alternating current, or the armature may vibrate because the alternating current is periodically interrupted as, for example, by an interrupter switch.

SEE OR SEARCH THIS CLASS, SUBCLASS:

87+, for periodic (e.g., vibrator) switches particularly subclasses 93+ and 95+ for vibrating armature structures.

215, for magnetostrictive type electromagnets with vibrating armature.