F16F 3/04
Composed only of wound springs
Official title: composed only of wound springs
F16F3/04 (Composed only of wound springs) appears on 302 US grants and 290 published applications in this corpus.
Search patents in F16F- Granted patents
- 302
- Published applications
- 290
- Assignees
- 202
- Inventors
- 548
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 2 | 0 |
| 1979 | 2 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 3 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 2 | 0 |
| 1987 | 3 | 0 |
| 1988 | 4 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 3 | 0 |
| 1993 | 6 | 0 |
| 1994 | 3 | 0 |
| 1995 | 0 | 0 |
| 1996 | 5 | 0 |
| 1997 | 4 | 0 |
| 1998 | 5 | 0 |
| 1999 | 7 | 0 |
| 2000 | 4 | 0 |
| 2001 | 9 | 2 |
| 2002 | 6 | 6 |
| 2003 | 7 | 5 |
| 2004 | 7 | 15 |
| 2005 | 4 | 11 |
| 2006 | 9 | 3 |
| 2007 | 5 | 7 |
| 2008 | 5 | 8 |
| 2009 | 1 | 3 |
| 2010 | 2 | 9 |
| 2011 | 3 | 7 |
| 2012 | 8 | 8 |
| 2013 | 3 | 13 |
| 2014 | 14 | 13 |
| 2015 | 8 | 11 |
| 2016 | 12 | 15 |
| 2017 | 16 | 14 |
| 2018 | 11 | 23 |
| 2019 | 21 | 25 |
| 2020 | 22 | 20 |
| 2021 | 15 | 18 |
| 2022 | 12 | 10 |
| 2023 | 7 | 12 |
| 2024 | 13 | 12 |
| 2025 | 11 | 14 |
| 2026 | 7 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Garter spring including spacer elements6 Oct 2026US 12,753,672 B2Halliburton Energy Services.Inc.
- Spring assemblies with variable flexibility for use with push-cables and pipe inspection systems22 Sep 2026US 12,743,014 B2Seescan, Inc.
- Torque balancing device, self-balancing joint, and surgical robot15 Sep 2026US 12,733,917 B2Beijing Surgerii Robotics Company Limited
- Spring module and spring cushion for furniture19 May 2026US 12,628,960 B2New-Tec Integration (Xiamen) Co., Ltd.
- Method and apparatus for an adjustable damper24 Mar 2026US 12,583,276 B2Fox Factory, Inc.
- Spring module formed by connecting spring units and elastic pad17 Sep 2026US 2026/0276049 A1
- Spring module and spring cushion for furniture16 Jul 2026US 2026/0198698 A1New-Tec Integration (Xiamen) Co., Ltd.
- Low-frequency tuned mass damping device with reverse-stretched compression springs21 May 2026US 2026/0139719 A1Dalian University of Technology
- Reverse force mechanism30 Apr 2026US 2026/0117835 A1Meidensha Corporation
- Torsion coil spring, method for manufacturing same, fastener for accessory, method for manufacturing same, and accessory23 Apr 2026US 2026/0108024 A1Crossfor Co., Ltd.
Most cited
By later US patents
- Vertebral prosthesis615US 5,306,310 AMAN Ceramics GmbH · 1994
- Memory metal actuator340US 4,553,393 AThe United States of America as represented by the Administrator of the National Aeronautics and Space Administration · 1985
- System for reducing vibrations in a pressure pumping fleet247US 10,119,381 B2U.S. Well Services, LLC · 2018
- Method and apparatus for an adjustable damper106US 9,452,654 B2Fox Factory, Inc. · 2016
- Method and apparatus for an adjustable damper91US 10,040,329 B2Fox Factory, Inc. · 2018