F16F 15/1421
Metallic springs
Official title: {Metallic springs, e.g. coil or spiral springs}
F16F15/1421 (Metallic springs) appears on 111 US grants and 105 published applications in this corpus.
Search patents in F16F- Granted patents
- 111
- Published applications
- 105
- Assignees
- 52
- Inventors
- 232
- Latest grant
- 2 Sep 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 8 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 3 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 0 |
| 2002 | 1 | 1 |
| 2003 | 1 | 4 |
| 2004 | 1 | 2 |
| 2005 | 2 | 2 |
| 2006 | 2 | 1 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 2 |
| 2010 | 0 | 1 |
| 2011 | 0 | 2 |
| 2012 | 3 | 2 |
| 2013 | 1 | 9 |
| 2014 | 3 | 6 |
| 2015 | 5 | 6 |
| 2016 | 5 | 12 |
| 2017 | 6 | 17 |
| 2018 | 13 | 4 |
| 2019 | 18 | 10 |
| 2020 | 4 | 6 |
| 2021 | 5 | 9 |
| 2022 | 8 | 4 |
| 2023 | 7 | 3 |
| 2024 | 2 | 0 |
| 2025 | 2 | 0 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Frequency-adaptive leaf-spring tuned mass damper2 Sep 2025US 12,404,910 B2FM Energie GmbH & Co. KG
- Device for damping the vibrations of a spindle of a machine tool, which spindle rotates about an axis of rotation7 Jan 2025US 12,186,850 B2Präwema Antriebstechnik GmbH
- Vibration damper made up of spoke spring absorbers17 Sep 2024US 12,092,184 B2Schaeffler Technologies AG & Co. KG
- Torque converter18 Jun 2024US 12,013,019 B2Valeo Kapec Co., Ltd.
- Joystick device and a method of manufacturing thereof5 Dec 2023US 11,833,416 B2Razer (Asia-Pacific) Pte. Ltd.
- Gear or shaft comprising a mass damper9 Jul 2026US 2026/0194120 A1ZF Friedrichshafen AG
- Frequency-adaptive leaf-spring tuned mass damper21 Sep 2023US 2023/0296155 A1FM Energie GmbH & Co. KG
- Vibration damper made up of spoke spring absorbers24 Aug 2023US 2023/0265908 A1Schaeffler Technologies AG & Co. KG
- Torque converter17 Aug 2023US 2023/0258252 A1Valeo Kapec Co., Ltd.
- Rotor assembly and rotating machine14 Apr 2022US 2022/0112810 A1Mitsubishi Heavy Industries Aero Engines, Ltd.
Most cited
By later US patents
- Vibration absorbers45US 4,145,936 AWestland Aircraft Limited · 1979
- Clutch assembly for use with an internal combustion engine45US 4,220,233 AAisin Seiki Kabushiki Kaisha · 1980
- Flywheel permanent magnet machine35US 5,969,446 ASatCon Technology Corporation · 1999
- Flywheel assembly25US 4,846,323 AKabushiki Kaisha Daikin Seisakusho · 1989
- Flywheel assembly22US 4,842,116 AKabushiki Kaisha Daikin Seisakusho · 1989