US PATENT SUBCLASS 335 / 108
.~.~.~ Automatic telephone type

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

2  DF  ELECTROMAGNETICALLY ACTUATED SWITCHES {30}
106  DF  .~ Multiple contact type {5}
107  DF  .~.~ Contacts-selectively, sequentially, alternately, or intermittently actuated {3}
108.~.~.~ Automatic telephone type {7}
109  DF  .~.~.~.~> Plural or multidirection mechanical selector motions {2}
113  DF  .~.~.~.~> With holding, locking or latching means
114  DF  .~.~.~.~> Rotary selector motion
115  DF  .~.~.~.~> Reciprocating selector motion (e.g., sliding)
116  DF  .~.~.~.~> With reset or selector-restoring means
117  DF  .~.~.~.~> With operational mode-varying means
118  DF  .~.~.~.~> Motor-driven

DEFINITION

Classification: 335/108

(under subclass 107) Subject matter wherein the contact actuating structure comprises self-acting means, operating by its own self-contained mechanism when actuated by some impersonal influence, as for example, a change in current strength or a signalling current or voltage transmitted from a distance, which is not manual and requiring personal intervention, i.e., not requiring the presence of an operator. The art to be found in this and the indented subclasses is analogous to the automatic telephone type switching arrangements to be found in Class 379, subclasses 16+; but which is of general application and not restricted to any one art device specifically otherwise classifiable. The devices classified here may utilize mechanical structure for the actuation of the main contacts which are to be controlled, provided that the primary instigating means comprises electromagnetic or other magnetic means.

SEE OR SEARCH CLASS

200, Electricity: Circuit Makers and Breakers,

175+, for multiple contact switches analogous to those found here and in the indented subclasses but not claimed as electromagnetically actuated.