F03G 3/00
Spring, weight, inertia or like motors: other motors
Official title: Other motors, e.g. gravity or inertia motors
F03G3/00 (Spring, weight, inertia or like motors: other motors) appears on 430 US grants and 592 published applications in this corpus.
Search patents in F03G- Granted patents
- 430
- Published applications
- 592
- Assignees
- 192
- Inventors
- 742
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 7 | 0 |
| 1978 | 8 | 0 |
| 1979 | 2 | 0 |
| 1980 | 6 | 0 |
| 1981 | 4 | 0 |
| 1982 | 5 | 0 |
| 1983 | 5 | 0 |
| 1984 | 1 | 0 |
| 1985 | 3 | 0 |
| 1986 | 3 | 0 |
| 1987 | 3 | 0 |
| 1988 | 1 | 0 |
| 1989 | 3 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 5 | 0 |
| 2000 | 1 | 0 |
| 2001 | 4 | 1 |
| 2002 | 5 | 7 |
| 2003 | 2 | 4 |
| 2004 | 4 | 12 |
| 2005 | 4 | 10 |
| 2006 | 3 | 15 |
| 2007 | 4 | 20 |
| 2008 | 2 | 10 |
| 2009 | 1 | 12 |
| 2010 | 6 | 16 |
| 2011 | 5 | 16 |
| 2012 | 4 | 13 |
| 2013 | 10 | 24 |
| 2014 | 13 | 23 |
| 2015 | 22 | 18 |
| 2016 | 8 | 20 |
| 2017 | 13 | 24 |
| 2018 | 22 | 14 |
| 2019 | 13 | 30 |
| 2020 | 26 | 32 |
| 2021 | 28 | 45 |
| 2022 | 24 | 39 |
| 2023 | 35 | 38 |
| 2024 | 37 | 67 |
| 2025 | 44 | 48 |
| 2026 | 23 | 34 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- F03G 3/087Gravity or weight motors187
- F03G 3/08Spring, weight, inertia or like motors: other motors: using flywheels155
- F03G 3/06Spring, weight, inertia or like motors: other motors: using pendulums41
- F03G 3/096Spring, weight, inertia or like motors: other motors: adapted for pumping or20
- F03G 3/02Spring, weight, inertia or like motors: other motors: using wheels with circumferentially-arranged18
- F03G 3/04Driven by sand or like fluent solid material13
- F03G 3/097Motors specially adapted for creating a reciprocating movement11
Recent patents
- No funnel propless wind turbine and retrofit method29 Sep 2026US 12,747,722 B1
- Inertia flywheel assembly and system thereof8 Sep 2026US 12,729,754 B2Infiniforce, Inc.
- Energy storage and delivery system and method1 Sep 2026US 12,723,571 B2Energy Vault, Inc.
- Gravitational potential energy storage systems and methods18 Aug 2026US 12,709,307 B2Advanced Rail Energy Storage, LLC
- Flywheel18 Aug 2026US 12,710,029 B2Levistor Ltd
- Methods of generating electric power and a distributed network of a generator-turbine apparatus having a set of electric generators simultaneously driven by a gravity-force applied and moment imbalanced turbine8 Oct 2026US 2026/0309131 A1
- No funnel propless wind turbine and retrofit method1 Oct 2026US 2026/0298208 A1
- Mechanical renewable green energy production3 Sep 2026US 2026/0261182 A1Phos Global Energy Solutions, Inc.
- Energy management system and methods27 Aug 2026US 2026/0249712 A1
- Distributed Gravity Superposition Energy Collection And Power Generation Device20 Aug 2026US 2026/0243233 A1
Most cited
By later US patents