US PATENT SUBCLASS 431 / 13
WITH INDICATOR OR INSPECTION MEANS


Current as of: June, 1999
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431 /   HD   COMBUSTION

13WITH INDICATOR OR INSPECTION MEANS {2}
14  DF  .~> Correlated with action of condition responsive burner control {1}
17  DF  .~> Burner component position indicator


DEFINITION

Classification: 431/13

(under the class definition) Apparatus including (1) an indicating, registering, recording or alarm means for conveying information about a condition of a combustion or combustion starting apparatus, or (2) means which permits inspection of normally hidden parts of combustion apparatus or combustion starting apparatus.

SEE OR SEARCH CLASS

116, Signals and Indicators,

7, for a burglar alarm that also ignites a lamp or match; and subclasses 101+ for an alarm actuated by change in temperature, e.g., fire alarm, incubator, etc.

137, Fluid Handling,

551+, for a fluid handling system of general utility including an indicator, register, recorder, alarm or inspection means.

236, Automatic Temperature and Humidity Regulation,

94, for automatic temperature and humidity regulation apparatus thermostatically operated and including an indicator or alarm.

239, Fluid Sprinkling, Spraying, and Diffusing,

71+, for fluid sprinkling, spraying and diffusing apparatus of general utility with a signal, indicator, recorder, meter or changeable exhibitor.

340, Communications: Electrical,

577+, for an electrical communications system not specialized for use with a specific flame holder responsive to flame.

356, Optics: Measuring and Testing,

315, for spectroscopic analysis apparatus and subclass 417 for flame photometers comprising a flame holder, a means for feeding a sample to the flame and flame observation means.

374, Thermal Measuring and Testing,

100+, for a device for measuring or testing temperature.