F01L 13/0047
The movement of the valves resulting from the sum of the simultaneous
Official title: {the movement of the valves resulting from the sum of the simultaneous actions of at least two cams, the cams being independently variable in phase in respect of each other}
F01L13/0047 (The movement of the valves resulting from the sum of the simultaneous) appears on 93 US grants and 73 published applications in this corpus.
Search patents in F01L- Granted patents
- 93
- Published applications
- 73
- Assignees
- 46
- Inventors
- 143
- Latest grant
- 29 Jul 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 4 | 0 |
| 1997 | 4 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 7 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 2 |
| 2004 | 1 | 5 |
| 2005 | 2 | 4 |
| 2006 | 2 | 2 |
| 2007 | 6 | 4 |
| 2008 | 2 | 3 |
| 2009 | 0 | 2 |
| 2010 | 2 | 5 |
| 2011 | 2 | 3 |
| 2012 | 6 | 5 |
| 2013 | 3 | 2 |
| 2014 | 3 | 0 |
| 2015 | 2 | 6 |
| 2016 | 1 | 4 |
| 2017 | 6 | 7 |
| 2018 | 4 | 6 |
| 2019 | 7 | 6 |
| 2020 | 5 | 4 |
| 2021 | 3 | 1 |
| 2022 | 1 | 0 |
| 2023 | 0 | 1 |
| 2024 | 1 | 0 |
| 2025 | 1 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
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- Variable valve device18 Jun 2024US 12,012,875 B2Suzuki Motor Corporation
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- Variable valve lift system29 Jun 2021US 11,047,267 B2Mechadyne International Ltd.
- Valve train of an internal combustion engine22 Jun 2021US 11,041,416 B2Mahle International GmbH
- Reciprocating piston engine, and method for operating a reciprocating piston engine15 May 2025US 2025/0154908 A1Schaeffler Technologies AG & Co. KG
- Variable valve device12 Oct 2023US 2023/0323798 A1Suzuki Motor Corporation
- Improved combustion engine4 Nov 2021US 2021/0340930 A1
- Dual Camshaft Phase Control Assembly3 Dec 2020US 2020/0378280 A1
- Variable Valve Lift System29 Oct 2020US 2020/0340373 A1Mechadyne International Ltd.
Most cited
By later US patents
- Variable compression ratio engine74US 5,682,854 AKomatsu Ltd. · 1997
- Variable valve timing for four-stroke engines57US 4,572,118 A1986
- Variable valve timing system for induction control of an internal combustion engine48US 4,357,917 ANissan Motor Co., Ltd. · 1982
- Exhaust recharging of a four cycle internal combustion engine29US 5,050,378 A1991
- Device for the variable control of the valves of internal combustion engines, more particularly for the throttle-free load control of 4-stroke engines27US 5,586,527 AMeta Motoren-und Energie-Technik GmbH · 1996