F01L 13/0063
By modification of cam contact point by displacing an intermediate lever or
Official title: {by modification of cam contact point by displacing an intermediate lever or wedge-shaped intermediate element, e.g. Tourtelot}
F01L13/0063 (By modification of cam contact point by displacing an intermediate lever or) appears on 576 US grants and 567 published applications in this corpus.
Search patents in F01L- Granted patents
- 576
- Published applications
- 567
- Assignees
- 111
- Inventors
- 680
- Latest grant
- 25 Nov 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 5 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 3 | 0 |
| 1990 | 2 | 0 |
| 1991 | 5 | 0 |
| 1992 | 4 | 0 |
| 1993 | 4 | 0 |
| 1994 | 6 | 0 |
| 1995 | 3 | 0 |
| 1996 | 1 | 0 |
| 1997 | 3 | 0 |
| 1998 | 2 | 0 |
| 1999 | 3 | 0 |
| 2000 | 3 | 0 |
| 2001 | 2 | 4 |
| 2002 | 12 | 27 |
| 2003 | 24 | 26 |
| 2004 | 25 | 35 |
| 2005 | 31 | 51 |
| 2006 | 45 | 59 |
| 2007 | 50 | 55 |
| 2008 | 48 | 51 |
| 2009 | 29 | 58 |
| 2010 | 48 | 42 |
| 2011 | 39 | 12 |
| 2012 | 33 | 9 |
| 2013 | 13 | 20 |
| 2014 | 15 | 22 |
| 2015 | 29 | 20 |
| 2016 | 12 | 20 |
| 2017 | 15 | 25 |
| 2018 | 15 | 7 |
| 2019 | 16 | 3 |
| 2020 | 6 | 6 |
| 2021 | 4 | 7 |
| 2022 | 5 | 5 |
| 2023 | 3 | 2 |
| 2024 | 3 | 0 |
| 2025 | 1 | 1 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Opposed-piston internal combustion engine25 Nov 2025US 12,480,439 B2Umu Devising LLC
- Variable-lift valve train having at least two working positions26 Nov 2024US 12,152,513 B2Bayerische Motoren Werke Aktiengesellschaft
- Lift regulator for a variable lift valve gear with two working positions15 Oct 2024US 12,116,910 B2Bayerische Motoren Werke Aktiengesellschaft
- Single actuator shifting cam system16 Apr 2024US 11,959,403 B2Fca US LLC
- Variable valve mechanism3 Oct 2023US 11,773,758 B2Kawasaki Jukogyo Kabushiki Kaisha
- Opposed-piston internal combustion engine2 Oct 2025US 2025/0305446 A1Umu Devising LLC
- Variable-Stroke Valve Drive With a Double Leg Spring9 Mar 2023US 2023/0075127 A1Bayerische Motoren Werke Aktiengesellschaft
- Variable valve mechanism26 Jan 2023US 2023/0025775 A1Kawasaki Jukogyo Kabushiki Kaisha
- Lift Regulator for a Variable Lift Valve Gear With Two Working Positions22 Dec 2022US 2022/0403762 A1Bayerische Motoren Werke Aktiengesellschaft
- Single actuator shifting cam system15 Dec 2022US 2022/0397045 A1Fca US LLC
Most cited
By later US patents
- Variable valve timing for four-stroke engines57US 4,572,118 A1986
- Operating mechanism for dual valves in an internal combustion engine51US 4,656,977 AHonda Giken Kogyo Kabushiki Kaisha · 1987
- Cylinder cutoff control apparatus of internal combustion engine51US 7,146,966 B2Hitachi, Ltd. · 2006
- Variable-valve-actuation apparatus for internal combustion engine47US 6,575,128 B2Nissan Motor Co., Ltd. · 2003
- Valve gear assembly for an internal-combustion engine45US 5,373,818 ABayerische Motoren Werke Aktiengesellschaft · 1994