F16F 15/1236
Resulting in a staged spring characteristic
Official title: {resulting in a staged spring characteristic, e.g. with multiple intermediate plates}
F16F15/1236 (Resulting in a staged spring characteristic) appears on 183 US grants and 162 published applications in this corpus.
Search patents in F16F- Granted patents
- 183
- Published applications
- 162
- Assignees
- 51
- Inventors
- 336
- Latest grant
- 18 Nov 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 2 | 0 |
| 1983 | 2 | 0 |
| 1984 | 2 | 0 |
| 1985 | 6 | 0 |
| 1986 | 3 | 0 |
| 1987 | 10 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 3 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 3 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 6 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 3 |
| 2004 | 1 | 3 |
| 2005 | 2 | 0 |
| 2006 | 1 | 0 |
| 2007 | 2 | 6 |
| 2008 | 0 | 0 |
| 2009 | 1 | 7 |
| 2010 | 3 | 7 |
| 2011 | 5 | 3 |
| 2012 | 4 | 12 |
| 2013 | 7 | 4 |
| 2014 | 6 | 12 |
| 2015 | 8 | 17 |
| 2016 | 10 | 15 |
| 2017 | 13 | 24 |
| 2018 | 12 | 16 |
| 2019 | 19 | 6 |
| 2020 | 13 | 10 |
| 2021 | 2 | 4 |
| 2022 | 2 | 5 |
| 2023 | 11 | 4 |
| 2024 | 3 | 0 |
| 2025 | 2 | 3 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Damper device and method of assembling same18 Nov 2025US 12,473,961 B2Exedy Corporation
- Multiple stage torsional coupling with centering bearing and coil spring snubbing26 Aug 2025US 12,398,761 B2Lord Corporation
- Drive train unit with a torsion damper and an inner intermediate hub12 Nov 2024US 12,140,194 B2Schaeffler Technologies AG & Co. KG
- Damper apparatus18 Jun 2024US 12,013,009 B2Aisin Corporation
- Damper device and design method of damper device9 Jan 2024US 11,867,239 B2Aisin Corporation
- Power transmission device and torque limiter11 Jun 2026US 2026/0160315 A1Exedy Corporation
- Torsional vibration reducing apparatus30 Oct 2025US 2025/0334167 A1Unipres Corporation
- Damper10 Jul 2025US 2025/0224004 A1Aisin Corporation
- Damper device20 Mar 2025US 2025/0092919 A1Aisin Corporation
- Damper device3 Aug 2023US 2023/0243389 A1Exedy Corporation
Most cited
By later US patents
- Vibration damper for a torque converter lock-up clutch53US 4,138,003 AGeneral Motors Corporation · 1979
- Two-stage torsional vibration damper49US 4,347,717 ABorg-Warner Corporation · 1982
- Series spring torsional vibration damper39US 4,304,107 ABorg-Warner Corporation · 1981
- Vibration damper with variable spring rate and damping friction28US 4,101,015 ABorg-Warner Corporation · 1978
- Compound damper assembly for an automatic transmission28US 4,422,535 AFord Motor Company · 1983