US PATENT SUBCLASS 337 / 175
.~.~.~.~.~ Combined latch or trip

Current as of: June, 1999
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337 /   HD   ELECTRICITY: ELECTROTHERMALLY OR THERMALLY ACTUATED SWITCHES

14  DF  ELECTROTHERMALLY ACTUATED SWITCHES {9}
142  DF  .~ Fusible element actuated {15}
168  DF  .~.~ Cutout or disconnect type (an assembly) of a fuse support and fuse holder with or without a fuse link) {3}
171  DF  .~.~.~ With dropout features (i.e., the fuse tube will be separated, or drop away from, at least on the main circuit contacts) {3}
174  DF  .~.~.~.~ With holding, latch or trip means {2}
175.~.~.~.~.~ Combined latch or trip

DEFINITION

Classification: 337/175

(under subclass 174) Subject matter wherein the holding, latching or tripping structure includes means whereby at least two modes of releasing operation are accomplished or at least two or more separate means whereby the fuse contacts are maintained in the controlled electric circuit. For instance, the release means may be either manually or automatically operated or the latching means may be dually controlled by means of fuse tension and a bimetallic element, etc.