US PATENT SUBCLASS 337 / 17
.~.~ Fusible material combined with gap

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

14  DF  ELECTROTHERMALLY ACTUATED SWITCHES {9}
15  DF  .~ Shunt or short circuit completion devices {4}
17.~.~ Fusible material combined with gap {1}
18  DF  .~.~.~> Gaseous space discharge gap (e.g., air gap)

DEFINITION

Classification: 337/17

(under subclass 15) Subject matter relating to a device wherein during normal conditions of a circuit at least two contacts or electrodes are separated by an insulating gap which is bypassed by a fuse and upon the occurrence of abnormal conditions in the circuit causing failure of the fuse current is allowed to pass directly between the contacts or electrodes. The thermo responsive fusible means usually comprises latching or holding means releasable, when subject to overheating, to allow the main contacts to close.

SEE OR SEARCH THIS CLASS, SUBCLASS:

31, for fusible structure combined with a spark gap or lighting arrester means.

SEE OR SEARCH CLASS

338, Electrical Resistors,

215, for fusible elements shunting a resistance.