F02B 33/10
With the pumping cylinder situated between working cylinder and crankcase, or with
Official title: with the pumping cylinder situated between working cylinder and crankcase, or with the pumping cylinder surrounding working cylinder
F02B33/10 (With the pumping cylinder situated between working cylinder and crankcase, or with) appears on 92 US grants and 56 published applications in this corpus.
Search patents in F02B- Granted patents
- 92
- Published applications
- 56
- Assignees
- 33
- Inventors
- 111
- Latest grant
- 29 Jul 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 3 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 3 | 0 |
| 1989 | 4 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 2 | 0 |
| 1998 | 4 | 0 |
| 1999 | 3 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 1 |
| 2002 | 2 | 3 |
| 2003 | 0 | 3 |
| 2004 | 5 | 3 |
| 2005 | 3 | 2 |
| 2006 | 2 | 1 |
| 2007 | 1 | 2 |
| 2008 | 2 | 2 |
| 2009 | 3 | 7 |
| 2010 | 1 | 4 |
| 2011 | 2 | 2 |
| 2012 | 5 | 6 |
| 2013 | 4 | 3 |
| 2014 | 4 | 1 |
| 2015 | 1 | 0 |
| 2016 | 3 | 2 |
| 2017 | 1 | 3 |
| 2018 | 0 | 4 |
| 2019 | 2 | 1 |
| 2020 | 4 | 0 |
| 2021 | 3 | 5 |
| 2022 | 5 | 1 |
| 2023 | 0 | 0 |
| 2024 | 0 | 0 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Self-charged four stroke one-cycle combustion cylinder for internal combustion engine29 Jul 2025US 12,372,016 B1
- Optimal efficiency internal combustion engine27 Sep 2022US 11,454,165 B2Creed Engines, LLC
- Four-stroke relative motion cylinder with dedicated compression space7 Jun 2022US 11,352,942 B2
- Two-cycle motor31 May 2022US 11,346,277 B1
- Two stroke engine with valves actuated by air pressure near bottom dead center22 Mar 2022US 11,280,254 B2
- Four-stroke relative motion cylinder with dedicated compression space20 Jan 2022US 2022/0018280 A1
- Internal Combustion Engine18 Nov 2021US 2021/0355892 A1Coutts Industries Inc.
- A two stroke engine with valves actuated by air pressure near bottom dead center23 Sep 2021US 2021/0293177 A1
- Optimal Efficiency Internal Combustion Engine5 Aug 2021US 2021/0239039 A1Creed Engines, LLC
- Internal Combustion Engine25 Mar 2021US 2021/0087996 A1Coutts Industries Inc.
Most cited
By later US patents
- Internal combustion engine50US 7,469,664 B2Advanced Propulsion Technologies, Inc. · 2008
- Internal combustion engine37US 5,261,358 AAardvark Pty Ltd. · 1993
- Internal combustion engine35US 5,285,752 ASingle-Stroke Motors, Inc. · 1994
- Stepped piston and stepped piston engine27US 4,522,163 A1985
- Self-supercharging dual piston engine apparatus26US 4,185,597 A1980