F03G 1/026
Using torsion springs
Official title: {using torsion springs}
F03G1/026 (Using torsion springs) appears on 49 US grants and 44 published applications in this corpus.
Search patents in F03G- Granted patents
- 49
- Published applications
- 44
- Assignees
- 40
- Inventors
- 89
- Latest grant
- 16 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 2 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 4 |
| 2009 | 1 | 2 |
| 2010 | 3 | 3 |
| 2011 | 0 | 1 |
| 2012 | 3 | 1 |
| 2013 | 3 | 0 |
| 2014 | 2 | 3 |
| 2015 | 2 | 1 |
| 2016 | 0 | 2 |
| 2017 | 2 | 2 |
| 2018 | 1 | 1 |
| 2019 | 5 | 8 |
| 2020 | 5 | 5 |
| 2021 | 3 | 5 |
| 2022 | 4 | 1 |
| 2023 | 2 | 2 |
| 2024 | 0 | 0 |
| 2025 | 1 | 2 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Energy converter module16 Jun 2026US 12,655,830 B2Blue Economy CRC Co
- Winding drum and torsion spring for a winding drum11 Nov 2025US 12,466,693 B2Igus GmbH
- Dynamic mass torque generator12 Sep 2023US 11,754,056 B1Hawk Spider Energy Corp.
- Spring return device21 Feb 2023US 11,585,327 B2Kinetrol Limited
- Spring array and method for door counterbalancing27 Dec 2022US 11,536,067 B2Overhead Door Corporation
- Energy storage structure and rotary isolation switch27 Aug 2026US 2026/0251128 A1Chint Low Voltage Electrical Technology Co., Ltd.
- Energy converter module22 May 2025US 2025/0163895 A1Blue Economy CRC Co
- Constant torsion force generator and real-time constant-force tension device24 Apr 2025US 2025/0129770 A1
- Systems and methods for capturing kinetic energy and for emission-free conversion of captured energy to electricity3 Aug 2023US 2023/0243344 A1Constructis Group, Inc.
- Winding drum and torsion spring for a winding drum12 Jan 2023US 2023/0011558 A1Igus GmbH
Most cited
By later US patents
- Reversible rotary actuator with spring return48US 4,595,081 ABarber-Colman Company · 1986
- Clamping or spreading tool44US 7,735,813 B2Irwin Industrial Tools GmbH · 2010
- Triple spring torque motor27US 5,181,771 ASony Trans Com Inc. · 1993
- Clamping and/or spreading tool25US 7,651,078 B2Irwin Industrial Tool Company · 2010
- Mechanical stored energy positioning actuator23US 4,113,063 AVapor Corporation · 1978