US PATENT SUBCLASS 340 / 500
CONDITION RESPONSIVE INDICATING SYSTEM

Current as of: June, 1999
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340 /   HD   COMMUNICATIONS: ELECTRICAL

500CONDITION RESPONSIVE INDICATING SYSTEM {6}
501  DF  .~> With particular system function (e.g., temperature compensation, calibration) {8}
531  DF  .~> With particular coupling link {3}
540  DF  .~> Specific condition {18}
691.1  DF  .~> Specified indicator structure {7}
693.1  DF  .~> Specified power supply {3}
693.5  DF  .~> Specified housing {3}

DEFINITION

Classification: 340/500

CONDITION RESPONSIVE INDICATING SYSTEM:

(under the class definition) Subject matter where an electrical means provides a humanly perceptible signal in response to the attainment of a predetermined condition.

(1) Note. This subclass includes, for example, alarm circuits or signals which are automatically responsive to some condition, such as excessive temperature. Alarm devices which are manually activated are classified in Class 340, subclasses 286.04+.

(2) Note. Condition responsive indicators in combination with structural details of a particular art device are classified with the art device; e.g., telemetering systems, data processing systems, chemical apparatus, tools, or vehicles.

(3) Note. The combination of a condition responsive indicator and a switching system is classified herein; however, if the indicator means is merely an ancillary element, classification is elsewhere; e.g. Class 307 or 361.

(4) Note. Particular quantitative testing or measuring means in combination with an electrical condition responsive indicator are classified with the appropriate testing and measuring class, except if the quantitative measurement is peculiar to an alarm device; e.g., a smoke detector alarm system with a meter indication of its power supply.

(5) Note. If a qualitative testing, measuring, or monitoring means is claimed to be permanently associated with the

environment being tested, such as a machine monitoring device, classification is in Class 340, while if it is temporarily associated, as in a portable test set, classification is in the appropriate testing and measuring class.

(6) Note. The class definition of this class, under "SEARCH CLASS", refers to the many other classes which contain alarms and indicators. SEE OR SEARCH THIS CLASS, SUBCLASS:

438+, and 463+, for vehicle condition responsive alarms or indicators.

825.32, for an authorization control system having an alarm or indication of improper access.

825.36+, for a selective communication system with an indication or alarm.

870.09, for telemetering systems which have added alarms.

910+, and 917+, for traffic control indicators which are responsive to vehicle detectors.

SEE OR SEARCH CLASS

116, Signals and Indicators, appropriate subclasses, especially

67, and 200+ for nonelectrical alarms and indicators which are automatically responsive to a condition.

200, Electricity: Circuit Makers and Breakers, appropriate subclasses under

52, for circuit makers and breakers whose controllers are responsive to a condition.

234, Selective Cutting (e.g., Punching), 22+, for a selective cutting device having means responsive to a given operating condition (or malfunction) to impose an auxiliary control thereon.

307, Electrical Transmission or Interconnection Systems,

86+, 97, 99, 116+, and 152 for electrical transmission or switching systems which are responsive to a condition.

315, Electric Lamp and Discharge Devices: Systems,

129, for electric lamp or discharge systems with a signal, indicator, or alarm.

327, Miscellaneous Active Electrical Nonlinear Devices,

Circuits, and Systems,

187, for a stable state circuit which is externally effected and subclasses 509+ for miscellaneous circuits which are externally effected.

331, Oscillators,

65+, for electric oscillation generators combined with means responsive to an external physical condition.

336, Inductor Devices,

30, for inductors with condition responsive adjusting means. 338, Electrical Resistors,

13+, for resistors whose resistance value is responsive to a condition.

361, Electricity: Electrical Systems and Devices,

1+, for safety and protection systems which may be condition responsive; subclasses 139+ for electrical relay systems; and subclasses 271+ for capacitors which are automatically responsive or nonresponsive to a condition.

367, Communications, Electrical: Acoustic Wave Systems and Devices,

93+, and 136 for acoustic wave-type intruder detectors.