US PATENT SUBCLASS 337 / 119
.~.~ Utilizing capillary tube or bore means


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

14  DF  ELECTROTHERMALLY ACTUATED SWITCHES {9}
114  DF  .~ Expansible or vaporizable fluid-actuated (e.g., mercury vapor) {5}
119.~.~ Utilizing capillary tube or bore means


DEFINITION

Classification: 337/119

(under subclass 114) Subject matter including significant details of a capillary tube or bore at least partially filled by a vaporizable liquid conductor the bore being of such caliber that the liquid is either caused to vaporize at a predetermined current value or to shift its position within the bore thereby disconnecting the contacts of the device. Generally the devices act in a similar manner to a conventional fuse, acting to open a circuit between contacts upon the vaporization of the liquid.

SEE OR SEARCH THIS CLASS, SUBCLASS:

321, for similar devices utilizing thermally responsive liquid actuating means.

SEE OR SEARCH CLASS

219, Electric Heating,

510+, especially subclass 511, for automatic thermally responsive fluid actuated switches for electric heaters utilizing capillary tube means. 236, Automatic Temperature and Humidity Regulation,

95, and 99+ for thermally responsive expanding fluid actuated temperature regulating systems utilizing capillary tubes.

361, Electricity: Electrical Systems and Devices,

161+, for a mercury column type thermostat in an electrical circuit for relays and electromagnets.