IPC Definitions - January 01, 2012
H05B - Definition
This subclass covers:
Electric heating:
This subclass covers not only the electric elements and circuitry designs but also the electric aspects of their arrangement, where these concern cases of general application. Heating elements used in specific applications are classified in subclasses for those applications.
Electric lighting:
This subclass covers circuits and circuit elements for the above light sources. The above light sources when combined with light sources of a different kind are also covered by this subclass.
This subclass is residual for electric lighting.
Relationship between large subject matter areas
Electric heating
Uses of electric heat sources, or apparatus incorporating such heat sources, are too numerous to mention and cover all possible areas of technology. Examples of places where such uses or apparatus can be found include A47J (domestic cooking); B21JB21K (forging by heat); C21C22, C23 (metallurgy); F24 (domestic heating and stoves); F27 (furnaces and ovens). See also the references below.
Electric lighting
Uses of electric light sources are also too numerous to mention and cover all possible areas of technology. See indexing schemes F21W and F21Y.
Class F21 covers the material arrangement of parts including electrical elements, i.e. their geometrical or physical position in relation to one another, such as the structures or constructional features of lighting devices incorporating a light source, electric or otherwise.
References relevant to classification in this subclass
This subclass does not cover:
Heating or cooling appliances for medical or therapeutic treatment | A61F 7/00 |
Joining of preformed parts by heating of plastics or substances in a plastic state | B29C 65/02 |
Apparatus for electrothermal treatment of ores or metallurgical products | C22B 4/08 |
Electron beam or ion beam tubes for localised treatment of objects | H01J 37/30 |
Electric discharge tubes | H01J |
Electric discharge lamps | H01J 61/00-H01J 65/00 |
Circuit elements structurally associated with the lighting element of an electric discharge lamp | H01J 61/56 |
Electric incandescent lamps | H01K |
Semiconductor devices with at least one particular jump barrier or surface barrier, specially adapted for light emission | H01L 27/15, H01L 33/00 |
Organic light emitting devices (OLED) | H01L 27/32, H01L 51/50 |
Stimulated-emission devices | H01S |
Plasma torches | H05H 1/26 |
Attention is drawn to the following places, which may be of interest for search:
Measuring of temperature by colorimeter | G01J |