US PATENT SUBCLASS 335 / 38
.~.~.~ Magnetic

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

2  DF  ELECTROMAGNETICALLY ACTUATED SWITCHES {30}
6  DF  .~ Automatic circuit-interrupting devices (e.g., circuit-protective devices) {12}
21  DF  .~.~ With latch or trip means {6}
38.~.~.~ Magnetic {3}
39  DF  .~.~.~.~> With time delay (e.g., thermal) {1}
41  DF  .~.~.~.~> With magnetic flux winding directly in series with main contacts
42  DF  .~.~.~.~> With adjusting or calibrating means

DEFINITION

Classification: 335/38

(under subclass 21) Subject matter wherein the trip structure consists wholly or exclusively of magnetically operated means. The trip means may consist of plural magnets acting conjointly, single magnet means with a plurality of armatures or any other magnetic structure so long as the operating means consists of magnetic means only.

(1) Note. For magnetic trip structure in general which performs the additional function of arc suppression or blow-out, the search should be extended to subclass 201 below.

SEE OR SEARCH THIS CLASS, SUBCLASS:

174, for electromagnetically actuated switches in general with significant magnetically actuated tripping means.

SEE OR SEARCH CLASS

200, Electricity: Circuit Makers and Breakers,

12+, for dial type multiple circuit controllers with electromagnetic release, subclass 404 for double snap switches with magnetic latch trip, subclass 404 for single switches with magnetic latch trip.

219, Electric Heating,

519, for automatically operated current connection or disconnection means for heating devices comprising electromagnetic relay means.

361, Electricity: Electrical Systems and Devices,

1+, and appropriate subclasses for safety and protective systems employing electromagnetic protective devices.