US PATENT SUBCLASS 204 / 228.1
.~.~ With current, voltage, or power control means responsive to sensed condition

Current as of: June, 1999
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204 /   HD   CHEMISTRY: ELECTRICAL AND WAVE ENERGY

193  DF  APPARATUS {5}
194  DF  .~ Electrolytic {11}
228.1.~.~ With current, voltage, or power control means responsive to sensed condition {8}
228.2  DF  .~.~.~> Fluid level sensing means
228.3  DF  .~.~.~> Fluid flow sensing means
228.4  DF  .~.~.~> Fluid pressure sensing means {1}
228.6  DF  .~.~.~> Electrolyte property sensing means (e.g., temperature, concentration, pH, conductivity, etc.)
228.7  DF  .~.~.~> Workpiece property sensing means (e.g., mass, coating thickness, etc.)
228.8  DF  .~.~.~> Workpiece presence, position, or movement sensing means
228.9  DF  .~.~.~> Having auxiliary electrode {1}
229.2  DF  .~.~.~> And programmed, cyclic, or time responsive control means {1}

DEFINITION

Classification: 204/228.1

With current, voltage, or power control means responsive to sensed condition:

(under subclass 194) Apparatus having means for detecting an apparatus or process characteristic or a change therein and for controlling (i.e., regulating) current, voltage, or power based on the detected characteristic or change therein.

(1) Note. In this subclass and the subclasses indented hereunder, a single means may be used both to detect a characteristic or change therein and to implement an action based upon the detected characteristic or change therein. There must be a positive action implemented by a control means as a result of the detected characteristic or change therein.

SEE OR SEARCH THIS CLASS, SUBCLASS:

196.02+, for electrolytic object protection apparatus with

control means responsive to a sensed condition.

204, 205, 211, 218, and 223, for electrolytic apparatus with movable electrode means and with means to control electrolytic current.

602, 607, and 628, for electrophoretic or electro-osmotic apparatus with control means responsive to a sensed condition.

661+, for apparatus for electrical (including simultaneous electrical and magnetic) separation or purification of a liquid or magnetic treatment of a liquid (other than separation) with control means responsive to a sensed condition. 400+, for apparatus for electrolytic analysis or testing, per se.

SEE OR SEARCH CLASS

73, Measuring and Testing, as the residual class for processes and apparatus for measuring or testing, per se. See also (3) Note in the class definition of class 73 for additional loci of other measuring and testing processes and apparatus.

205, Electrolysis: Processes, Compositions Used Therein and Methods of Preparing the Compositions,

82+, for an electrolytic coating process which involves controlling the process in response to a measured or detected parameter, subclasses 641+ for an electrolytic erosion process with control responsive to a sensed condition, and subclasses 725+ and 743 for an electrolytic material treatment process with control responsive to a sensed condition.

323, Electricity, Power Supply, or Regulation Systems, 220, 354 for systems controlling current and/or voltage in a single circuit.

324, Electricity, Measuring and Testing, for measuring and testing per se, to determine electrical properties by electrical means even if nonelectrical values are derived from the electrical properties determined.