Cooperative Patent Classification


CPC Definition - Subclass F03G

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Last Updated Version: 2017.05
SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR (arrangements in connection with power supply in vehicles from force of nature B60K 16/00; electric propulsion with power supply in vehicles from force of nature B60L 8/00)
Definition statement

This place covers:

Spring, gravity, inertia or like motors. Devices or mechanisms for producing power, e.g. mechanical or electric power, from muscle energy, or solar energy, or not otherwise provided for, or using energy sources not otherwise provided for.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Arrangements in connection with power supply in vehicles from force of nature

Electric propulsion with power supply in vehicles from force of nature

Glossary of terms

In this place, the following terms or expressions are used with the meaning indicated:

Motor

mechanism for producing mechanical power from potential energy of solid bodies

Spring-motor (spring-driven toys A63H; springs in general F16F; precision time mechanisms, e.g. for clocks or watches, G04B)
Definition statement

This place covers:

Mechanisms for producing mechanical power from the energy stored in a spring or spring-like member

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Spring-driven toys

Springs in general

Precision time mechanisms, e.g. for clocks or watches

Other motors, e.g. gravity or inertia motors {(driven by falling liquid F03B)}
Definition statement

This place covers:

Motors driven by gravity or inertia force, e.g. driven by solid falling bodies like bowls, or by solid falling materials like sand, or by out of balance bodies like pendulums, or by the change of the orientation of the rotation axis of a rotating body

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Motors driven by falling liquid or by waves, e.g. hydraulic turbines, or wave power plants, or tidal power plants

Devices for producing mechanical power from muscle energy (driving cycles B62M)
Definition statement

This place covers:

Devices for producing mechanical power from human or animal muscle energy and being of the endless-walk type, e.g. treadmills, or other than of the endless-walk type, e.g. pedal generators

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Driving cycles

Charging batteries with a non-electric prime mover

Electric generator with motor driven by animals or vehicles

Devices for producing mechanical power from solar energy (solar boilers F24)
Definition statement

This place covers:

Devices for producing mechanical power from solar energy, e.g. with photovoltaic cells, or solar collectors with or without concentration of solar rays, the devices using a single-state working fluid, e.g. Stirling cycle, or involving a phase change of the working fluid (Rankine cycle), e.g. a steam-water cycle

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Gas-turbine plants with the working fluid being heated indirectly, e.g. by solar energy

Stirling cycle type engines

Up-wind power plants

Solar heat collectors

Machines using solar energy

Energy generation through solar thermal energy

Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for {(micro-structural devices or systems, e.g. micro-mechanical devices B81B)}
Definition statement

This place covers:

Devices or mechanisms for producing mechanical power from vibrational energy, e.g. of a fluid or a machine, or from an electro-chemical process, or by using pressure differences or thermal differences occurring in nature, or from expansion or contraction of bodies.

References
Limiting references

This place does not cover:

Flexible endoscopes using shape memory elements

Electrothermal relays making use of shape memory materials

Informative references

Attention is drawn to the following places, which may be of interest for search:

Micro-structural devices or systems, e.g. micro-mechanical devices

Perpetuum mobile cycles

Alledged perpetuum mobilia using liquids

Solar or artificial heating for draft enhancement of chimneys

Pumping of fluid by direct contact of another fluid or by using inertia of the fluid to be pumped

Temperature sensing elements

Actuators expanding and contracting in response to changes of temperature

Thermo-electric devices operating with Peltier or Seebeck effect

Electric generator with mechanical motor driven by intermittent forces, e.g. by the wheel of a passing vehicle

Alleged dynamo-electric perpetuum mobilia

Motors not provided for elsewhere

Motors driven by springs, weights or manual power
Definition statement

This place covers:

Motors driven by springs, weights or manual power

Special rules of classification

Indexing Codes F03G 2730/01 - F03G 2730/03 are used for additional classification of documents in group F03G 1/00

Indexing Codes F03G 2730/05 - F03G 2730/07 are used for additional classification of documents in group F03G 5/00