US PATENT SUBCLASS 335 / 271
.~.~.~ With armature bounce or vibration-preventing means

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}
270  DF  .~.~ Armature-mounting means {6}
271.~.~.~ With armature bounce or vibration-preventing means

DEFINITION

Classification: 335/271

(under subclass 270) Subject matter including means to prevent vibration of the armature when it contacts an armature stop.

(1) Note. The means to prevent vibration of the armature may include, for example, fluid type rebound damping means, elastic or resilient material or weight on the armature.

SEE OR SEARCH THIS CLASS, SUBCLASS:

46, for automatic circuit interrupting switches with contact rebound or other undesirable motion preventing means.

90, for periodic switches with vibration damping means.

104, for alternating current switches with chatter, bounce or vibration preventing means.

157+, for switches with operation inhibiting means (shock resistant). 193, for switches with contact actuating means with vibration bounce or chatter prevention means.

247, for alternating current electromagnets with chatter or vibration preventing means.

257, for plunger type armature with shock absorbing means.

277, for electromagnets mounted to prevent or absorb shock.

SEE OR SEARCH CLASS

248, Supports,

560+, for resilient supports.

336, Inductor Devices,

100, for inductor devices (such as transformers and inductive

reactors) with vibration control means.