F01B 7/14
Acting on different main shafts
Official title: acting on different main shafts
F01B7/14 (Acting on different main shafts) appears on 166 US grants and 151 published applications in this corpus.
Search patents in F01B- Granted patents
- 166
- Published applications
- 151
- Assignees
- 39
- Inventors
- 160
- Latest grant
- 30 Dec 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 3 | 0 |
| 1982 | 3 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 5 | 0 |
| 1990 | 0 | 0 |
| 1991 | 5 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 3 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 4 | 4 |
| 2008 | 1 | 1 |
| 2009 | 0 | 2 |
| 2010 | 1 | 7 |
| 2011 | 0 | 1 |
| 2012 | 0 | 8 |
| 2013 | 10 | 10 |
| 2014 | 6 | 9 |
| 2015 | 7 | 6 |
| 2016 | 5 | 16 |
| 2017 | 13 | 12 |
| 2018 | 13 | 11 |
| 2019 | 13 | 20 |
| 2020 | 18 | 19 |
| 2021 | 17 | 10 |
| 2022 | 6 | 3 |
| 2023 | 4 | 3 |
| 2024 | 6 | 5 |
| 2025 | 4 | 2 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Piston bearing assembly for an opposed-piston engine30 Dec 2025US 12,510,015 B2General Atomics Aeronautical Systems, Inc.
- Opposed-piston internal combustion engine25 Nov 2025US 12,480,439 B2Umu Devising LLC
- Opposed-piston internal combustion engine16 Sep 2025US 12,416,257 B2
- Parent bore cylinder block of an opposed-piston engine29 Apr 2025US 12,286,940 B2Achates Power, Inc.
- Linear electric generator8 Oct 2024US 12,113,427 B2Yafa Innovations Ltd.
- Engine13 Aug 2026US 2026/0235068 A1Ishikawa Energy Research Co., Ltd.
- Opposed-piston internal combustion engine2 Oct 2025US 2025/0305446 A1Umu Devising LLC
- Opposed-piston internal combustion engine27 Mar 2025US 2025/0101908 A1Apex Dynamics, Sia
- Parent bore cylinder block of an opposed-piston engine28 Nov 2024US 2024/0392734 A1Achates Power, Inc.
- Car provided with an internal combustion engine30 May 2024US 2024/0174072 A1Ferrari S.P. A.
Most cited
By later US patents
- Internal combustion engine with compound air compression138US 5,362,219 A1994
- Variable-cycle reciprocating internal combustion engine64US 4,856,463 A1989
- Dual compression and dual expansion engine51US 5,623,894 ACaterpillar Inc. · 1997
- Variable compression ratio systems for opposed-piston and other internal combustion engines, and related methods of manufacture and use40US 8,413,619 B2Pinnacle Engines, Inc. · 2013
- Low emission combustion system for internal combustion engines39US 5,042,441 A1991