F16F 15/121
Using springs as elastic members
Official title: using springs as elastic members, e.g. metallic springs {(F16F15/133 takes precedence)}
F16F15/121 (Using springs as elastic members) appears on 1,396 US grants and 1,071 published applications in this corpus.
Search patents in F16F- Granted patents
- 1,396
- Published applications
- 1,071
- Assignees
- 406
- Inventors
- 2,171
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 6 | 0 |
| 1978 | 8 | 0 |
| 1979 | 9 | 0 |
| 1980 | 11 | 0 |
| 1981 | 13 | 0 |
| 1982 | 5 | 0 |
| 1983 | 7 | 0 |
| 1984 | 23 | 0 |
| 1985 | 22 | 0 |
| 1986 | 35 | 0 |
| 1987 | 47 | 0 |
| 1988 | 16 | 0 |
| 1989 | 20 | 0 |
| 1990 | 25 | 0 |
| 1991 | 16 | 0 |
| 1992 | 26 | 0 |
| 1993 | 19 | 0 |
| 1994 | 12 | 0 |
| 1995 | 13 | 0 |
| 1996 | 11 | 0 |
| 1997 | 21 | 0 |
| 1998 | 41 | 0 |
| 1999 | 31 | 0 |
| 2000 | 37 | 0 |
| 2001 | 38 | 7 |
| 2002 | 19 | 19 |
| 2003 | 10 | 17 |
| 2004 | 14 | 16 |
| 2005 | 10 | 20 |
| 2006 | 18 | 13 |
| 2007 | 13 | 27 |
| 2008 | 7 | 26 |
| 2009 | 9 | 40 |
| 2010 | 18 | 27 |
| 2011 | 30 | 24 |
| 2012 | 29 | 46 |
| 2013 | 32 | 45 |
| 2014 | 28 | 51 |
| 2015 | 45 | 76 |
| 2016 | 53 | 75 |
| 2017 | 67 | 104 |
| 2018 | 81 | 85 |
| 2019 | 91 | 73 |
| 2020 | 63 | 73 |
| 2021 | 49 | 72 |
| 2022 | 50 | 52 |
| 2023 | 70 | 27 |
| 2024 | 32 | 18 |
| 2025 | 33 | 21 |
| 2026 | 7 | 17 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- F16F 15/123Wound springs845
- F16F 15/124Elastomeric springs324
- F16F 15/1213Spiral springs75
- F16F 15/1216Torsional springs66
- F16F 15/1215Leaf springs65
- F16F 15/1217Motion-limiting means51
- F16F 15/127Using plastics springs combined with other types of springs45
- F16F 15/1214Folded springs, i.e. made of band-like material folded in an enclosing space15
All 9 subgroupsShow fewer
Recent patents
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- Bush24 Sep 2026US 2026/0287041 A1Prospira Corporation
- Damper device10 Sep 2026US 2026/0266353 A1Aisin Corporation
- Improved filtering pulley3 Sep 2026US 2026/0258857 A1Muviq S.R.L.
- Multi-stage vibration damping apparatus having mechanical stopper20 Aug 2026US 2026/0243310 A1Valeo Kapec Co., Ltd.
Most cited
By later US patents
- Torsional impulse damper for direct connection to universal joint drive shaft152US 4,483,684 ATwin Disc, Incorporated · 1984
- Variable length shaft assembly particularly for motor vehicle steering shafts108US 4,667,530 AEtablissement Supervis · 1987
- Shaft decoupler77US 6,044,943 ALitens Automotive Partnership · 2000
- Torsion damper including a pre-damper having a housing with hooked tongues, in particular for a motor vehicle60US 5,240,458 AValeo · 1993
- Drill shock absorber58US 3,947,009 ABucyrus-Erie Company · 1976