F03G 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 B60K16/00; electric propulsion with power supply in vehicles from force of nature B60L8/00)
Introduced: September 1968
Description
F03G covers mechanical power generation systems based on springs, weights, inertia, or unconventional energy sources that do not fit within other prime mover classifications. This includes devices such as clockwork motors, gravity-powered mechanisms, flywheel energy systems, and mechanical systems exploiting elastic deformation or rotational inertia. The subclass is designated for innovative mechanical-power-producing devices and mechanisms using energy sources not covered elsewhere in the F03 division (such as hydraulic, pneumatic, wind, or solar systems). It serves as a residual classification for novel mechanical propulsion or power generation technologies outside established categories.
Title
Titles differ between systems:
IPC: SPRING, WEIGHT, INERTIA, OR LIKE MOTORS; MECHANICAL-POWER-PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
CPC: 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 B60K16/00; electric propulsion with power supply in vehicles from force of nature B60L8/00)
Full Title
Full titles differ between systems:
SPRING, WEIGHT, INERTIA, OR LIKE MOTORS; MECHANICAL-POWER-PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
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 B60K16/00; electric propulsion with power supply in vehicles from force of nature B60L8/00)
IPC and CPC are identically structured here. All 6 subcodes exist in both systems.
3 shared codes have differing titles between IPC and CPC.
Child Classifications
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- F03G 1/00 Spring motors (spring-driven toys A63H; springs in general F16F; precision time mechanisms, e.g. for clocks or watches, G04B) IPC+CPC Available in IPC and CPC
- F03G 4/00 Devices for producing mechanical power from geothermal energy since 1990 +10 CPC IPC+CPC Available in IPC and CPC
- F03G 5/00 Devices for producing mechanical power from muscle energy (driving cycles B62M) +6 CPC IPC+CPC Available in IPC and CPC
- F03G 6/00 Devices for producing mechanical power from solar energy (solar boilers F24) since 1990 +11 CPC IPC+CPC Available in IPC and CPC
- F03G 7/00 Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for +11 CPC IPC+CPC Available in IPC and CPC
Top Applicants
Top Applicants (IPC)
Class F03,2013–2023, worldwide · Source: EPO PATSTAT
- VESTAS DK 3,539
- WOBBEN PROPERTIES DE 2,922
- SIEMENS GAMESA RENEWABLE ENERGY DK 2,747
- GE (GENERAL ELECTRIC COMPANY) US 2,356
- BEIJING GOLDWIND SCIENCE & CREATION WINDPOWER EQUIPMENT COMPANY 1,228
- SIEMENS DE 886
- SGCC(STATE GRID CORPORATION OF CHINA) 831
- HUANENG CLEAN ENERGY RESEARCH INSTITUTE 785
- MING YANG SMART ENERGY GROUP. 652
- LM WIND POWER DK 600
Top Applicants (CPC)
Class F03,2013–2023, worldwide · Source: EPO PATSTAT
- VESTAS DK 3,718
- WOBBEN PROPERTIES DE 3,602
- SIEMENS GAMESA RENEWABLE ENERGY DK 3,016
- GE (GENERAL ELECTRIC COMPANY) US 2,594
- SIEMENS DE 1,082
- BEIJING GOLDWIND SCIENCE & CREATION WINDPOWER EQUIPMENT COMPANY 709
- LM WIND POWER DK 671
- WOBBEN PROPERTIES 660
- SENVION DE 555
- BEIJING GOLDWIND SCIENCE & CREATION WINDPOWER EQUIPMENT COMPANY CN 536