F01L 1/12
Transmitting gear between valve drive and valve
Official title: Transmitting gear between valve drive and valve (simultaneously operating two or more valves F01L1/26)
F01L1/12 (Transmitting gear between valve drive and valve) appears on 3,634 US grants and 2,998 published applications in this corpus.
Search patents in F01L- Granted patents
- 3,634
- Published applications
- 2,998
- Assignees
- 594
- Inventors
- 4,381
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 8 | 0 |
| 1977 | 3 | 0 |
| 1978 | 7 | 0 |
| 1979 | 8 | 0 |
| 1980 | 11 | 0 |
| 1981 | 8 | 0 |
| 1982 | 15 | 0 |
| 1983 | 13 | 0 |
| 1984 | 24 | 0 |
| 1985 | 32 | 0 |
| 1986 | 40 | 0 |
| 1987 | 36 | 0 |
| 1988 | 40 | 0 |
| 1989 | 59 | 0 |
| 1990 | 30 | 0 |
| 1991 | 46 | 0 |
| 1992 | 42 | 0 |
| 1993 | 51 | 0 |
| 1994 | 48 | 0 |
| 1995 | 38 | 0 |
| 1996 | 52 | 0 |
| 1997 | 70 | 0 |
| 1998 | 68 | 0 |
| 1999 | 69 | 0 |
| 2000 | 49 | 0 |
| 2001 | 97 | 34 |
| 2002 | 91 | 92 |
| 2003 | 102 | 94 |
| 2004 | 85 | 110 |
| 2005 | 95 | 162 |
| 2006 | 127 | 137 |
| 2007 | 118 | 160 |
| 2008 | 123 | 155 |
| 2009 | 79 | 199 |
| 2010 | 114 | 132 |
| 2011 | 127 | 119 |
| 2012 | 118 | 115 |
| 2013 | 110 | 106 |
| 2014 | 111 | 92 |
| 2015 | 110 | 111 |
| 2016 | 88 | 165 |
| 2017 | 123 | 182 |
| 2018 | 129 | 154 |
| 2019 | 166 | 141 |
| 2020 | 185 | 156 |
| 2021 | 138 | 112 |
| 2022 | 107 | 78 |
| 2023 | 61 | 51 |
| 2024 | 70 | 66 |
| 2025 | 69 | 46 |
| 2026 | 24 | 29 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Variable displacement valvetrain systems with rocker shaft porting and insert sleeves for engine cylinder deactivation22 Sep 2026US 12,742,403 B2GM Global Technology Operations LLC
- Valve bridge for a valve train of an internal combustion engine, especially of a motor vehicle, and internal combustion engine4 Aug 2026US 12,698,731 B2Daimler Truck AG
- Hydraulic capsule for variable valve actuation4 Aug 2026US 12,698,732 B2Eaton Intelligent Power Limited
- Switchable rocker arm14 Jul 2026US 12,680,480 B2Eaton Intelligent Power Limited
- Rocker arm system for an internal combustion engine valvetrain14 Jul 2026US 12,680,481 B2Manton Pushrods, LLC
- Valve bridge anti-dislodgement structures1 Oct 2026US 2026/0298114 A1Eaton Intelligent Power Limited
- Valve operating system17 Sep 2026US 2026/0275886 A1Isuzu Motors Limited
- Roller hydraulic valve lifter bearing10 Sep 2026US 2026/0266204 A1Roller Bearing Company of America, Inc.
- Engine13 Aug 2026US 2026/0235053 A1Ishikawa Energy Research Co., Ltd.
- Engine braking device with returning and limiting functions and engine30 Jul 2026US 2026/0218633 A1Zhejiang Liming Intelligent Manufacturing Co., Ltd.
Most cited
By later US patents
- Premixed charge compression ignition engine with optimal combustion control196US 6,276,334 B1Cummins Engine Company, Inc. · 2001
- Finger follower rocker arm with engine valve deactivator136US 5,544,626 AFord Motor Company · 1996
- Powertrain component with adherent film having a graded composition132US 5,249,554 AFord Motor Company · 1993
- Process and apparatus for compression release engine retarding producing two compression release events per cylinder per engine cycle103US 4,572,114 AThe Jacobs Manufacturing Company · 1986
- Electromagnetic valve actuator103US 4,794,890 AMagnavox Government and Industrial Electronics Company · 1989