F16F 15/1216
Torsional springs
Official title: {Torsional springs, e.g. torsion bar or torsionally-loaded coil springs}
F16F15/1216 (Torsional springs) appears on 66 US grants and 79 published applications in this corpus.
Search patents in F16F- Granted patents
- 66
- Published applications
- 79
- Assignees
- 50
- Inventors
- 177
- Latest grant
- 7 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1989 | 1 | 0 |
| 1990 | 4 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 2 |
| 2004 | 0 | 0 |
| 2005 | 1 | 0 |
| 2006 | 0 | 0 |
| 2007 | 1 | 4 |
| 2008 | 0 | 2 |
| 2009 | 0 | 0 |
| 2010 | 1 | 0 |
| 2011 | 1 | 2 |
| 2012 | 1 | 2 |
| 2013 | 1 | 1 |
| 2014 | 0 | 0 |
| 2015 | 4 | 7 |
| 2016 | 2 | 6 |
| 2017 | 7 | 11 |
| 2018 | 6 | 6 |
| 2019 | 6 | 7 |
| 2020 | 5 | 6 |
| 2021 | 4 | 9 |
| 2022 | 5 | 7 |
| 2023 | 7 | 3 |
| 2024 | 4 | 1 |
| 2025 | 3 | 3 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Metamaterial and metadamper7 Jul 2026US 12,676,257 B2The Royal Institution for the Advancement of Learning/Mcgill University
- Filtering pulley17 Jun 2025US 12,331,822 B2Muviq S.R.L.
- Viscous vibration damping of torsional oscillation8 Apr 2025US 12,270,258 B2Baker Hughes Oilfield Operations LLC
- Torsional damper and hybrid drive module comprising same25 Mar 2025US 12,259,018 B2Valeo Kapec Co., Ltd.
- Torsional vibration damper with a rotational axis for a powertrain25 Jun 2024US 12,018,729 B2Schaeffler Technologies AG & Co. KG
- Viscous vibration damping of torsional oscillation17 Jul 2025US 2025/0230716 A1Baker Hughes Oilfield Operations LLC
- Improved filtering pulley20 Mar 2025US 2025/0092946 A1Propulsion Solutions S.R..L.
- Torsional damper and hybrid drive module comprising same16 Jan 2025US 2025/0020187 A1Valeo Kapec Co., Ltd.
- Metamaterial and metadamper25 Apr 2024US 2024/0136100 A1The Royal Institution for the Advancement of Learning/Mcgill University
- Torque transmitting shaft7 Dec 2023US 2023/0392643 A1Steering Solutions IP Holding Corporation
Most cited
By later US patents
- Torsion damping mechanism for a supercharger39US 4,844,044 AEaton Corporation · 1989
- Supercharger torsion damping mechanism with friction damping28US 4,944,279 AEaton Corporation · 1990
- Torsion damping mechanism for a supercharger23US 4,944,278 AEaton Corporation · 1990
- Torque transmitting device and system for marine propulsion18US 8,277,269 B1Brunswick Corporation · 2012
- Isolator17US 8,419,574 B2The Gates Corporation · 2013