(under subclass 167) Subject matter wherein the latching structure includes independent magnetic means; such as a holding coil and armature, for instance, whereby the latch is operated into, or held in holding relationship with contact actuating means. Also included in this subclass are devices where no mechanical latch is used and which depend entirely upon magnetic means for directly holding the contact arm or
arms in closed position.
SEE OR SEARCH THIS CLASS, SUBCLASS:
21+, especially subclasses 38+ for automatic circuit interrupting devices including magnetically controlled latching means.
254, for electromagnet and armature with armature latch control winding.
SEE OR SEARCH CLASS
200, Electricity: Circuit Makers and Breakers, 169, for magnetically controlled latches in general.
290, Prime-Mover Dynamo Plants,
7+, especially subclasses 37 and 38, for electric control apparatus for electric engine starting motors which may include electromagnetic switches with magnetic latching means.
337, Electricity: Electrothermally or Thermally Actuated Switches,
71, for electrothermally actuated switches with plural latch or latch release means one of which may be magnetic.
361, Electricity: Electrical Systems and Devices,
67+, for safety and protection devices which may include magnetic latching means.
