F01L 1/024
Belt drive
Official title: {Belt drive}
F01L1/024 (Belt drive) appears on 781 US grants and 595 published applications in this corpus.
Search patents in F01L- Granted patents
- 781
- Published applications
- 595
- Assignees
- 198
- Inventors
- 1,239
- Latest grant
- 21 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 2 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 3 | 0 |
| 1985 | 7 | 0 |
| 1986 | 7 | 0 |
| 1987 | 10 | 0 |
| 1988 | 8 | 0 |
| 1989 | 10 | 0 |
| 1990 | 16 | 0 |
| 1991 | 7 | 0 |
| 1992 | 17 | 0 |
| 1993 | 9 | 0 |
| 1994 | 12 | 0 |
| 1995 | 11 | 0 |
| 1996 | 15 | 0 |
| 1997 | 17 | 0 |
| 1998 | 19 | 0 |
| 1999 | 16 | 0 |
| 2000 | 12 | 0 |
| 2001 | 33 | 24 |
| 2002 | 41 | 45 |
| 2003 | 49 | 58 |
| 2004 | 47 | 51 |
| 2005 | 56 | 69 |
| 2006 | 50 | 57 |
| 2007 | 48 | 73 |
| 2008 | 45 | 41 |
| 2009 | 31 | 31 |
| 2010 | 32 | 24 |
| 2011 | 21 | 19 |
| 2012 | 20 | 6 |
| 2013 | 12 | 6 |
| 2014 | 12 | 5 |
| 2015 | 6 | 7 |
| 2016 | 3 | 3 |
| 2017 | 6 | 14 |
| 2018 | 8 | 12 |
| 2019 | 14 | 13 |
| 2020 | 10 | 10 |
| 2021 | 9 | 8 |
| 2022 | 10 | 4 |
| 2023 | 3 | 2 |
| 2024 | 5 | 7 |
| 2025 | 5 | 3 |
| 2026 | 3 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Fuel injected independent rotary valve engine28 Oct 2025US 12,454,899 B1King Fahd University of Petroleum and Minerals
- Engine13 Aug 2026US 2026/0235053 A1Ishikawa Energy Research Co., Ltd.
- Variable valve timing mechanism23 Jul 2026US 2026/0210276 A1Subaru Corporation
- Oil pan for internal combustion engine9 Jul 2026US 2026/0194004 A1Arctic Cat Inc.
- Valved-piston and actuator with recycled combustion4 Dec 2025US 2025/0369373 A1
- Fuel injected independent rotary valve engine30 Oct 2025US 2025/0334062 A1King Fahd University of Petroleum and Minerals
Most cited
By later US patents
- Dual-acting apparatus for variable valve timing and the like87US 5,417,186 AClemson University · 1995
- OHC vertical crankshaft engine53US 5,031,591 AHonda Giken Kogyo Kabushiki Kaisha · 1991
- Detachable timing gear cassette unit for an explosion or internal combustion engine50US 4,607,601 ACompagnie des Transmissions Mechaniques Sedis · 1986
- Hydraulic tensioner50US 6,383,103 B1Tsubakimoto Chain Co. · 2002
- Variable valve timing mechanism for engine49US 6,250,266 B1Yamaha Hatsudoki Kabushiki Kaisha · 2001