US PATENT SUBCLASS 335 / 90
.~.~ With vibrating or oscillating element damping, frequency adjusting or vibration control

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

2  DF  ELECTROMAGNETICALLY ACTUATED SWITCHES {30}
87  DF  .~ Periodic (e.g., vibrators) {6}
90.~.~ With vibrating or oscillating element damping, frequency adjusting or vibration control

DEFINITION

Classification: 335/90

(under subclass 87) Subject matter wherein the structure includes means whereby the amplitude of the vibrator or periodic motion, the natural resonant frequency of the vibratory element, or equalization of the periods between the engagement of the movable contact and each one of fixed contacts is controlled or set.

SEE OR SEARCH THIS CLASS, SUBCLASS:

46, for automatic circuit interrupters with contact rebound prevention means.

104, for alternating current operated type switches with

chatter, bounce or vibration prevention means.

193, for contact vibration, bounce or chatter prevention means in general.

271, for armature bounce or vibration preventing means in general. SEE OR SEARCH CLASS

200, Electricity: Circuit Makers and Breakers,

19.05, 19.11, 19.19, and 19.21+ for other periodic switches with adjusting means.