F16H 2007/081
Torsion springs
Official title: {Torsion springs}
F16H2007/081 (Torsion springs) appears on 477 US grants and 353 published applications in this corpus.
Search patents in F16H- Granted patents
- 477
- Published applications
- 353
- Assignees
- 122
- Inventors
- 655
- Latest grant
- 21 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 2 | 0 |
| 1983 | 2 | 0 |
| 1984 | 4 | 0 |
| 1985 | 8 | 0 |
| 1986 | 9 | 0 |
| 1987 | 7 | 0 |
| 1988 | 9 | 0 |
| 1989 | 17 | 0 |
| 1990 | 19 | 0 |
| 1991 | 19 | 0 |
| 1992 | 9 | 0 |
| 1993 | 15 | 0 |
| 1994 | 13 | 0 |
| 1995 | 12 | 0 |
| 1996 | 12 | 0 |
| 1997 | 12 | 0 |
| 1998 | 7 | 0 |
| 1999 | 9 | 0 |
| 2000 | 7 | 0 |
| 2001 | 9 | 3 |
| 2002 | 13 | 9 |
| 2003 | 11 | 19 |
| 2004 | 4 | 17 |
| 2005 | 9 | 13 |
| 2006 | 9 | 18 |
| 2007 | 8 | 13 |
| 2008 | 8 | 24 |
| 2009 | 8 | 21 |
| 2010 | 14 | 21 |
| 2011 | 19 | 17 |
| 2012 | 15 | 11 |
| 2013 | 13 | 8 |
| 2014 | 11 | 12 |
| 2015 | 7 | 21 |
| 2016 | 11 | 14 |
| 2017 | 16 | 12 |
| 2018 | 12 | 9 |
| 2019 | 9 | 18 |
| 2020 | 14 | 19 |
| 2021 | 16 | 14 |
| 2022 | 13 | 9 |
| 2023 | 9 | 13 |
| 2024 | 8 | 4 |
| 2025 | 11 | 5 |
| 2026 | 3 | 9 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- High-offset belt tensioner with counterbalance torsion spring force21 Apr 2026US 12,607,249 B2Muviq USA, LLC
- Timing belt tensioner for 3D printer and 3D printer7 Apr 2026US 12,595,839 B2Shenzhen Tuozhu Technology Co., Ltd.
- Tensioner with tensioner lock with projection that includes first and second projection parts10 Mar 2026US 12,571,456 B2Litens Automotive Partnership
- System for improving vehicle efficiency23 Dec 2025US 12,503,175 B2Scandinavian Automotive Systems Inc.
- Automatic tensioner9 Dec 2025US 12,492,739 B2Mitsuboshi Belting Ltd.
- High-offset belt tensioner with counterbalance torsion spring force27 Aug 2026US 2026/0251206 A1Muviq S.R.L.
- Timing belt tensioner and processing apparatus6 Aug 2026US 2026/0226963 A1Shenzhen Tuozhu Technology Co., Ltd.
- High-offset belt tensioner with a non-rotatable pulley bolt or bolt system23 Jul 2026US 2026/0210425 A1Muviq USA, LLC
- High-offset belt tensioner with a non-rotatable pulley bolt or bolt system23 Jul 2026US 2026/0210426 A1Muviq USA, LLC
- Belt tensioner with retainer clip for a non-bolted pulley2 Jul 2026US 2026/0185588 A1Muviq USA, LLC
Most cited
By later US patents
- Belt tensioner with pivot bushing163US 6,682,452 B2Dayco Products, Inc. · 2004
- Belt tensioner with variably proportional damping106US 4,473,362 ALitens Automotive · 1984
- Serpentine drive with coil spring-one-way clutch alternator connection100US 5,156,573 ALitens Automotive Partnership · 1992
- Automatic belt tensioner for vehicle combined starter-generator77US 4,758,208 AGeneral Motors Corporation · 1988
- Timing belt tensioner with damped constant spring tensioning and belt tooth disegagement prevention75US 4,583,962 ALitens Automotive · 1986