US PATENT SUBCLASS 335 / 47
.~ Utilizing conductive liquid (e.g., mercury)

Current as of: June, 1999
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335 /   HD   ELECTRICITY: MAGNETICALLY OPERATED SWITCHES, MAGNETS, AND ELECTROMAGNETS

2  DF  ELECTROMAGNETICALLY ACTUATED SWITCHES {30}
47.~ Utilizing conductive liquid (e.g., mercury) {4}
48  DF  .~.~> Comprising three or more electrodes or circuit-completion means
49  DF  .~.~> With liquid-displacement means {3}
55  DF  .~.~> Armature structure {1}
57  DF  .~.~> Contact or electrode structure {1}

DEFINITION

Classification: 335/47

(under subclass 2) Subject matter wherein the structure includes means whereby at least one electrical circuit is completed through a conductive liquid, usually mercury.

(1) Note. For purposes of classification a conductive fluid comprising a fluid dielectric with copper or other electrical conductive particles in suspension therein is considered as a conductive liquid classifiable in this or the indented subclasses.

SEE OR SEARCH CLASS

200, Electricity: Circuit Makers and Breakers,

32, for periodic switches of the liquid contact type; subclass 81.6 for fluid pressure operated switches of the liquid contact type; and subclass 152 for nonelectromagnetically controlled switches in general

utilizing liquid contacts.

(1) Note. Class 200, subclass 152 is the generic place for liquid contact (mercury) switches. To complete the search for this subject matter the search notes under that subclass definition should be consulted. 324, Electricity: Measuring and Testing,

92+, for devices for measuring, testing or sensing electricity, per se, and utilizing fluid conductors.

337, Electricity: Electrothermally or Thermally Actuated Switches,

21, 114+, 306+, particularly subclasses 331 and 373 for electrothermal or thermally controlled switches utilizing liquid contacts.

361, Electricity: Electrical Systems and Devices,

500+, for electrolytic current interrupting systems and devices.