F02B 75/048
By means of a variable crank stroke length
Official title: {by means of a variable crank stroke length}
F02B75/048 (By means of a variable crank stroke length) appears on 278 US grants and 262 published applications in this corpus.
Search patents in F02B- Granted patents
- 278
- Published applications
- 262
- Assignees
- 74
- Inventors
- 377
- Latest grant
- 15 Jul 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 2 | 0 |
| 1979 | 2 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 3 | 0 |
| 1985 | 3 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 6 | 0 |
| 1991 | 1 | 0 |
| 1992 | 3 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 3 | 0 |
| 2000 | 2 | 0 |
| 2001 | 4 | 3 |
| 2002 | 5 | 14 |
| 2003 | 13 | 12 |
| 2004 | 13 | 13 |
| 2005 | 6 | 10 |
| 2006 | 12 | 12 |
| 2007 | 14 | 12 |
| 2008 | 13 | 11 |
| 2009 | 5 | 23 |
| 2010 | 7 | 17 |
| 2011 | 12 | 4 |
| 2012 | 16 | 8 |
| 2013 | 5 | 12 |
| 2014 | 12 | 13 |
| 2015 | 7 | 11 |
| 2016 | 11 | 7 |
| 2017 | 10 | 10 |
| 2018 | 16 | 19 |
| 2019 | 17 | 15 |
| 2020 | 19 | 17 |
| 2021 | 10 | 8 |
| 2022 | 7 | 1 |
| 2023 | 1 | 4 |
| 2024 | 3 | 2 |
| 2025 | 1 | 2 |
| 2026 | 0 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Engine with high torque mechanism28 May 2024US 11,994,060 B2International Engine Intellectual Property Company, LLC
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- Enhanced efficiency internal combustion engine21 May 2026US 2026/0139619 A1
- Continuously Variable Displacement and Variable Compression Ratio Mechanism and an Engine Provided with the Same16 Apr 2026US 2026/0104005 A1Hyundai Motor Company
- Variable compression ratio engine25 Dec 2025US 2025/0389221 A1
- Variable compression ratio device16 Oct 2025US 2025/0320836 A1
- Method for a combustion machine with two times three strokes12 Sep 2024US 2024/0301817 A1Dr. Ing. h,c.F. Porsche Aktiengesellschaft
Most cited
By later US patents
- Scotch yoke engine with variable stroke and compression ratio64US 4,485,768 A1984
- Variable displacement piston engine55US 4,270,495 AGeneral Motors Corporation · 1981
- Variable displacement and compression ratio piston engine50US 5,136,987 AFord Motor Company · 1992
- Variable stroke engine45US 4,517,931 A1985
- Free piston engine with linear power generator system45US 7,318,506 B12008