US PATENT SUBCLASS 337 / 31
.~.~ With fusible element (e.g., cutout means)

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

14  DF  ELECTROTHERMALLY ACTUATED SWITCHES {9}
28  DF  .~ Space discharge device (gaps, lightning arrester, etc.) {4}
31.~.~ With fusible element (e.g., cutout means) {2}
32  DF  .~.~.~> With grounding means
33  DF  .~.~.~> With common structural elements (e.g., fuse provides support or element of spark gap structure)

DEFINITION

Classification: 337/31

(under subclass 28) Subject matter relating to significant spark gap structure in combination with fusible cut out means or a fusible material controlled switch means.

SEE OR SEARCH THIS CLASS, SUBCLASS:

4+, for fusible element device and diverse art type switching device.

17+, for electrothermal switch having fusible material combined with gap.

142+, for electrothermal switches of the fusible element actuated type in general.

401+, for thermally actuated switches in general of the fusible, combustible or explosive material type. SEE OR SEARCH CLASS

361, Electricity: Electrical Systems and Devices,

124+, for lightning arrester with fusible means.