F16F 15/1213
Spiral springs
Official title: {Spiral springs, e.g. lying in one plane, around axis of rotation}
F16F15/1213 (Spiral springs) appears on 75 US grants and 61 published applications in this corpus.
Search patents in F16F- Granted patents
- 75
- Published applications
- 61
- Assignees
- 43
- Inventors
- 159
- Latest grant
- 25 Jun 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 3 | 0 |
| 1987 | 2 | 0 |
| 1988 | 2 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 5 | 0 |
| 1993 | 2 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 1 |
| 2002 | 1 | 0 |
| 2003 | 1 | 0 |
| 2004 | 2 | 3 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 3 |
| 2009 | 0 | 2 |
| 2010 | 2 | 1 |
| 2011 | 1 | 1 |
| 2012 | 2 | 1 |
| 2013 | 1 | 2 |
| 2014 | 0 | 2 |
| 2015 | 2 | 5 |
| 2016 | 2 | 2 |
| 2017 | 5 | 7 |
| 2018 | 7 | 10 |
| 2019 | 9 | 6 |
| 2020 | 2 | 8 |
| 2021 | 2 | 4 |
| 2022 | 6 | 2 |
| 2023 | 2 | 0 |
| 2024 | 1 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Torsional vibration damper with a rotational axis for a powertrain25 Jun 2024US 12,018,729 B2Schaeffler Technologies AG & Co. KG
- Torque fluctuation inhibiting device and torque converter30 May 2023US 11,661,995 B2Exedy Corporation
- Intermediate plate apparatus and related damper assemblies for use with vehicles14 Feb 2023US 11,578,779 B2Valeo Kapec Co., Ltd.
- Damper device30 Aug 2022US 11,428,291 B2Exedy Corporation
- Torque fluctuation inhibiting device and torque converter30 Aug 2022US 11,428,292 B2Exedy Corporation
- Vibration Damping of Structures Using Slip in Pretensioned Coils12 Dec 2024US 2024/0410442 A1California Institute of Technology
- Decoupler7 Jul 2022US 2022/0213954 A1Schaeffler Technologies AG & Co. KG
- Torsional vibration damper with a rotational axis for a powertrain12 May 2022US 2022/0145960 A1Schaeffler Technologies AG & Co. KG
- Device for reducing torsional vibrations in a drive train4 Nov 2021US 2021/0341020 A1ZF Friedrichshafen AG
- Intermediate plate apparatus and related damper assemblies for use with vehicles7 Oct 2021US 2021/0310539 A1Valeo Kapec Co., Ltd.
Most cited
By later US patents
- Supercharger pulley isolator49US 5,893,355 AEaton Corporation · 1999
- Vibration absorbers45US 4,145,936 AWestland Aircraft Limited · 1979
- Vibration damper with three sets of springs in parallel38US 4,181,208 AGeneral Motors Corporation · 1980
- Torsional damper36US 4,044,628 AU.S. Manufacturing Corporation · 1977
- Spiral spring disc torsional coupling30US 4,795,012 ABorg-Warner Automotive, Inc. · 1989