F01L 31/00
Valve drive, valve adjustment during operation, or other valve control, not provided
Official title: Valve drive, valve adjustment during operation, or other valve control, not provided for in groups F01L15/00 - F01L29/00 (sensing elements measuring the variable or condition to be controlled or regulated F01B25/04)
F01L31/00 (Valve drive, valve adjustment during operation, or other valve control, not provided) appears on 46 US grants and 23 published applications in this corpus.
Search patents in F01L- Granted patents
- 46
- Published applications
- 23
- Assignees
- 30
- Inventors
- 96
- Latest grant
- 11 Feb 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 2 | 0 |
| 1989 | 4 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 2 | 1 |
| 2005 | 2 | 1 |
| 2006 | 0 | 1 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 1 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 2 |
| 2015 | 2 | 2 |
| 2016 | 2 | 2 |
| 2017 | 3 | 3 |
| 2018 | 2 | 1 |
| 2019 | 1 | 0 |
| 2020 | 4 | 6 |
| 2021 | 1 | 1 |
| 2022 | 4 | 0 |
| 2023 | 0 | 1 |
| 2024 | 0 | 0 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- System and method for determining position of axial cam shifting system11 Feb 2025US 12,221,911 B1Fca US LLC
- Valve mechanism, engine and vehicle20 Sep 2022US 11,448,105 B2Great Wall Motor Company Limited
- Method for checking a variable valve lift control of an internal combustion engine6 Sep 2022US 11,434,844 B2Vitesco Technologies GmbH
- Rocker arm15 Feb 2022US 11,248,501 B2Eaton Intelligent Power Limited
- Slotted guide1 Feb 2022US 11,236,647 B2Mahle International GmbH
- Orbital-epicycle crankshaft with a reversible and adjustable constant volume combustion cycle at tdc or bdc31 Aug 2023US 2023/0272739 A1
- Method for Checking a Variable Valve Lift Control of an Internal Combustion Engine18 Feb 2021US 2021/0047949 A1Vitesco Technologies GmbH
- Slotted guide17 Sep 2020US 2020/0291830 A1Mahle International GmbH
- Valve mechanism, engine and vehicle7 May 2020US 2020/0141291 A1Great Wall Motor Company Limited
- Rocker arm30 Apr 2020US 2020/0131948 A1Eaton Intelligent Power Limited
Most cited
By later US patents
- Fluid driven reciprocating pump45US 5,758,563 AHolcom Co. · 1998
- Continuously operating piston pump39US 3,999,896 A1976
- Air valve actuator for reciprocable machine38US 5,240,390 AGraco Inc. · 1993
- Pressure fluid operated power plant15US 4,162,614 AJ.J.J. Air Injection Systems · 1979
- Fluid motor-pumping apparatus and system9US 4,830,583 ASRI International · 1989