US PATENT SUBCLASS 200 / 182
LIQUID CONTACT

Current as of: June, 1999
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200 /   HD   ELECTRICITY: CIRCUIT MAKERS AND BREAKERS

182LIQUID CONTACT {17}
183  DF  .~> Combined {2}
186  DF  .~> Time delay
187  DF  .~> Plural switches (in same housing) {2}
190  DF  .~> Liquid level responsive
191  DF  .~> Having capillary tube means {1}
193  DF  .~> Having electrolytic conductive-liquid means {1}
195  DF  .~> Spray or jet by centrifugal force and/or by other pressure-producing means {1}
199  DF  .~> Contact dips (moves relative to container) into the conductive liquid {1}
203  DF  .~> Cam actuated {2}
208  DF  .~> Periodic
209  DF  .~> Piston or plunger means {1}
211  DF  .~> Pressure-deformable (flexible) means {2}
214  DF  .~> With movable liquid-separating or shifting means
215  DF  .~> With external support or external housing {3}
220  DF  .~> Tiltable or rotatable {9}
233  DF  .~> Particular conductive liquid {1}
235  DF  .~> Particular contact structure or material {1}

DEFINITION

Classification: 200/182

(under the class definition) Switching devices in which electrical connection is made between two or more contacts or terminals by means of conducting liquid, usually mercury.

SEE OR SEARCH THIS CLASS, SUBCLASS:

61.04+, for other electrically-conducting-liquid switching devices of special application.

81.6, for other liquid-contact switches of the type in which a fluid pressure (or vacuum) acts upon a body of conductive liquid causing the latter to move so as to open or close a circuit including the conductive liquid.

SEE OR SEARCH CLASS

313, Electric Lamp and Discharge Devices,

163+, for electric discharge devices which have a liquid electrode. 324, Electricity: Measuring and Testing,

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

335, Electricity: Magnetically Operated Switches, Magnets, and Electromagnets,

47+, for magnetically operated switches utilizing conductive liquid.

337, Electricity: Electrothermally or Thermally Actuated Switches,

21, 80+, 331, and 373 for electrothermal or thermally controlled switches utilizing liquid contacts.

445, Electric Lamp or Space Discharge Component or Device Manufacturing,

1+, and 60+ and the classes specified in the Notes to the definitions of those subclasses, for the apparatus and processes for the manufacture of electric lamp and electric space discharge devices, such apparatus and processes being analogous to those in making mercury switches.