F16F 1/04
Wound springs
Official title: Wound springs {(making springs by coiling wire B21F3/00)}
F16F1/04 (Wound springs) appears on 1,379 US grants and 1,318 published applications in this corpus.
Search patents in F16F- Granted patents
- 1,379
- Published applications
- 1,318
- Assignees
- 831
- Inventors
- 2,700
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 7 | 0 |
| 1978 | 11 | 0 |
| 1979 | 5 | 0 |
| 1980 | 3 | 0 |
| 1981 | 4 | 0 |
| 1982 | 9 | 0 |
| 1983 | 9 | 0 |
| 1984 | 9 | 0 |
| 1985 | 14 | 0 |
| 1986 | 7 | 0 |
| 1987 | 10 | 0 |
| 1988 | 14 | 0 |
| 1989 | 18 | 0 |
| 1990 | 22 | 0 |
| 1991 | 12 | 0 |
| 1992 | 21 | 0 |
| 1993 | 16 | 0 |
| 1994 | 17 | 0 |
| 1995 | 17 | 0 |
| 1996 | 18 | 0 |
| 1997 | 16 | 0 |
| 1998 | 24 | 0 |
| 1999 | 26 | 0 |
| 2000 | 24 | 0 |
| 2001 | 26 | 9 |
| 2002 | 35 | 30 |
| 2003 | 22 | 27 |
| 2004 | 26 | 41 |
| 2005 | 21 | 34 |
| 2006 | 22 | 35 |
| 2007 | 19 | 30 |
| 2008 | 17 | 44 |
| 2009 | 18 | 31 |
| 2010 | 26 | 52 |
| 2011 | 26 | 47 |
| 2012 | 27 | 34 |
| 2013 | 30 | 53 |
| 2014 | 50 | 61 |
| 2015 | 48 | 69 |
| 2016 | 57 | 65 |
| 2017 | 61 | 83 |
| 2018 | 55 | 96 |
| 2019 | 70 | 79 |
| 2020 | 82 | 91 |
| 2021 | 67 | 72 |
| 2022 | 58 | 54 |
| 2023 | 49 | 53 |
| 2024 | 64 | 57 |
| 2025 | 42 | 48 |
| 2026 | 23 | 23 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- F16F 1/12Attachments or mountings805
- F16F 1/06With turns lying in cylindrical surfaces167
- F16F 1/10Spiral springs with turns lying substantially in plane surfaces136
- F16F 1/041With means for modifying the spring characteristics90
- F16F 1/042Characterised by the cross-section of the wire87
- F16F 1/045Canted-coil springs82
- F16F 1/047Characterised by varying pitch59
- F16F 1/08With turns lying in mainly conical surfaces , i.e. characterised by varying48
All 10 subgroupsShow fewer
Recent patents
- Spiral spring device6 Oct 2026US 12,753,818 B2Hayamizu Hatsujo Co., Ltd.
- Spring assemblies with variable flexibility for use with push-cables and pipe inspection systems22 Sep 2026US 12,743,014 B2Seescan, Inc.
- Quick release fastening device and assembly of quick release fastening device and outer tube8 Sep 2026US 12,729,705 B2
- Coil spring8 Sep 2026US 12,729,738 B2NHK Spring Co., Ltd.
- Spring keepers and spring assemblies incorporating the same4 Aug 2026US 12,698,813 B2Delta Scientific Corporation
- Coloured barrel spring1 Oct 2026US 2026/0298303 A1Nivarox-FAR S. A.
- Device for setting the prestressing force of a spring1 Oct 2026US 2026/0298304 A1Walter Stauffenberg GmbH & Co. KG
- Anti-static spiral spring for valve24 Sep 2026US 2026/0287035 A1Bray International, Inc.
- Motor vehicle locking device10 Sep 2026US 2026/0266108 A1Kiekert AG
- Hybrid bellows for a height adjustment device of a vehicle20 Aug 2026US 2026/0241766 A1Vibracoustic SE
Most cited
By later US patents
- Surgical system instrument sterile adapter1,479US 9,096,033 B2Intuitive Surgical Operations, Inc. · 2015
- Automatic self-injection device555US 5,478,316 ABecton, Dickinson and Company · 1995
- Surgical system sterile drape473US 8,746,252 B2Intuitive Surgical Operations, Inc. · 2014
- Embolic coils with offset helical and twisted helical shapes376US 5,639,277 ATarget Therapeutics, Inc. · 1997
- Canted coiled spring and seal196US 4,655,462 A1987