CPC Definition - Subclass F03D
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WIND MOTORS Definition statement This place covers: Mechanisms for converting the energy of wind into useful mechanical power. In particular: Wind motors with rotation axis substantially parallel to the flow of air entering the machine Wind motors with rotation axis substantially at right angle to the flow of air entering the machine Other wind motors Controlling wind motors Adaptations of wind motors for special use Combinations of wind motors with apparatus driven thereby Other details, component parts, or accessories of wind motors Relationships with other classification places F03D covers mechanisms for converting natural wind energy into useful mechanical energy, and the transmission of such mechanical energy to its point of use. Electrical power generation aspects of wind motors (e.g. dynamo-electric conversion and electric generators) are classified in H02P. Arrangements or systems for supplying or distributing electric power are classified in H02J. Circuit arrangements or sy References Limiting references This place does not cover:
Informative references Attention is drawn to the following places, which may be of interest for search:
Glossary of terms In this place, the following terms or expressions are used with the meaning indicated:
Synonyms and Keywords In patent documents, the following abbreviations are often used:
In patent documents, the following words/expressions are often used as synonyms:
Wind motors with rotation axis substantially parallel to the air flow entering the rotor (controlling thereof F03D 7/02) Definition statement This place covers: Wind motors having their rotation axis substantially parallel to the flow of air entering the machine. When the flow has been guided into a direction other that the original wind direction, the final flow into the wind motor should be considered for classification. References Limiting references This place does not cover:
Informative references Attention is drawn to the following places, which may be of interest for search:
Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor (controlling thereof F03D 7/06) Definition statement This place covers: Wind motors having their rotation axis substantially perpendicular to the flow of air entering the machine. When the flow has been guided into a direction other that the original wind direction, the final flow into the wind motor should be considered for classification. References Limiting references This place does not cover:
{with augmenting action, i.e. the guiding means intercepting an area greater than the effective rotor area (F03D 3/0463, F03D 3/049 take precedence)} Definition statement This place covers: Wind motors characterised by the "effective area" of the rotor which is the cross section area of the rotor which contributes positively, i.e. causes a torque in/ to the desired rotation. The "augmenting" guiding means are those guiding means which intercept an area of flow greater than this "effective rotor area", and direct the flow into the rotor. The guiding means which fulfil this intercepting role are bounded on all sides from inlet to outlet into rotor, and therefore also accelerate or "concentrate" the flow into the rotor. Example: EP0226526  GB2420831  Special rules of classification When the guiding means form also a shield means on one side of the rotor F03D 3/0463 or F03D 3/049 take precedence. {and only with concentrating action, i.e. only increasing the airflow speed into the rotor (F03D 3/0463 takes precedence)} Definition statement This place covers: Wind motors with a concentrating means, i.e. the guiding means only increase the flow speed into the rotor without intercepting an area of flow greater than the effective rotor area (see definition of this effective area in F03D 3/0427 entry). These concentrating guiding means can be either bounded on all sides or only on some. US1596373  AU597755B (see channel 12)  {the wind engaging parts having a cyclic movement relative to the rotor during its rotation} Definition statement This place covers: Wind motors wherein the wind engaging parts, i.e. the blades, vanes, paddles or cups, undergo a change of orientation within each cycle of rotation of the wind rotor, coming back to their original position after each revolution. This change of orientation happens of itself, passively, the direct result of the wind acting on the wind engaging parts as the relative wind direction changes with the rotation. Example: WO2010102517  {the cyclic relative movement being coupled to the movement of rotation; Controlling same, e.g. according to wind direction or force} Definition statement This place covers: Wind motors whereby the cyclic movement of the wind engaging parts during each revolution of the rotor are forcibly and actively related to the rotor rotation, not the result of the action on the part by the wind flow itself . Examples: US2011091322  DE202008006980U  Other wind motors (controlling thereof F03D 7/00) References Limiting references This place does not cover:
{Wind motors having a single vane which axis generate a conus or like surface} Definition statement the wind-engaging parts being attached to endless chains or the like Definition statement the wind-engaging parts being attached to carriages running on tracks or the like Definition statement the wind-engaging parts swinging to-and-fro and not rotating Definition statement Controlling wind motors Definition statement This place covers: Control of wind motors and related control arrangements. F03D 7/02 and F03D 7/06 covers essentially the two main types of wind motors according groups F03D 1/00 and F03D 3/00. Main group F03D 7/00 covers all other types of wind motors. Subgroups F03D 7/0204 - F03D 7/0296 cover the purpose of the control or the type of control actuators. Subgroups under F03D 7/04 cover the type of controllers and/or the control methods. References Limiting references This place does not cover:
Informative references Attention is drawn to the following places, which may be of interest for search:
Special rules of classification Multi-aspect classification should be applied in this group. Documents should be classified in F03D 7/02 for purpose of control or the type of controller and in addition according the control method or type of controller in group F03D 7/04. For example, a model-based controller acting on the pitch system to reduce rotor noise should be classified in groups F03D 7/045, F03D 7/0224 and F03D 7/0296. the wind motors having rotation axis substantially perpendicular to the air flow entering the rotor References Informative references Attention is drawn to the following places, which may be of interest for search:
Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations (hybrid wind-photovoltaic energy systems for the generation of electric power H02S 10/12) Definition statement This place covers: Adaptations of wind motors for special use, e.g. for converting solar radiation into useful energy by producing heat or for producing heat in heat pump systems; Combinations of wind motors with water energy converters, e.g. water turbines; Combinations of wind motors with apparatus driven thereby, e.g. pumps or compressors, electrical generators, heat pump systems or apparatus storing energy. References Limiting references This place does not cover:
Application-oriented references Examples of places where the subject matter of this place is covered when specially adapted, used for a particular purpose, or incorporated in a larger system:
Informative references Attention is drawn to the following places, which may be of interest for search:
Wind motors characterised by the driven apparatus (F03D 9/10 takes precedence) References Limiting references This place does not cover:
Application-oriented references Examples of places where the subject matter of this place is covered when specially adapted, used for a particular purpose, or incorporated in a larger system:
Wind motors specially adapted for installation in particular locations (means for mounting or supporting wind motors F03D 13/20) References Limiting references This place does not cover:
Informative references Attention is drawn to the following places, which may be of interest for search:
on moving objects, e.g. vehicles Definition statement This place covers: Wind motors specially adapted for installation on moving objects, e.g. vehicles, in which the movement of the object causes air flow through the rotor. Arrangements for mounting or supporting wind motors; Masts or towers for wind motors References Informative references Attention is drawn to the following places, which may be of interest for search:
specially adapted for offshore installation References Informative references Attention is drawn to the following places, which may be of interest for search:
Arrangements or methods specially adapted for transporting wind motor components References Informative references Attention is drawn to the following places, which may be of interest for search:
Transmission of mechanical power Definition statement This place covers: Transmission of mechanical power, i.e. mechanisms by which the wind-derived mechanical power is conveyed to its point of use References Informative references Attention is drawn to the following places, which may be of interest for search:
Gearless transmission, i.e. direct-drive Glossary of terms In this place, the following terms or expressions are used with the meaning indicated:
Monitoring or testing of wind motors, e.g. diagnostics (testing during commissioning of wind motors F03D 13/30) Definition statement This place covers: Monitoring or testing of wind motors, e.g. diagnostics. References Limiting references This place does not cover:
Glossary of terms In this place, the following terms or expressions are used with the meaning indicated:
Arrangements for warning air traffic References Informative references Attention is drawn to the following places, which may be of interest for search:
Arrangements for avoiding shadow flicker Glossary of terms In this place, the following terms or expressions are used with the meaning indicated:
Lightning protection References Informative references Attention is drawn to the following places, which may be of interest for search:
Bearing or lubricating arrangements References Informative references Arrangement of components within nacelles or towers Glossary of terms In this place, the following terms or expressions are used with the meaning indicated:
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