F01L 7/08
Rotary or oscillatory slide valve-gear or valve arrangements: with conically or frusto-conically
Official title: with conically or frusto-conically shaped valves
F01L7/08 (Rotary or oscillatory slide valve-gear or valve arrangements: with conically or frusto-conically) appears on 27 US grants and 20 published applications in this corpus.
Search patents in F01L- Granted patents
- 27
- Published applications
- 20
- Assignees
- 11
- Inventors
- 36
- Latest grant
- 5 Jul 2022
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 1 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 1 | 4 |
| 2008 | 3 | 2 |
| 2009 | 0 | 2 |
| 2010 | 2 | 1 |
| 2011 | 1 | 0 |
| 2012 | 1 | 1 |
| 2013 | 2 | 1 |
| 2014 | 1 | 1 |
| 2015 | 1 | 1 |
| 2016 | 0 | 1 |
| 2017 | 0 | 1 |
| 2018 | 1 | 0 |
| 2019 | 1 | 2 |
| 2020 | 1 | 0 |
| 2021 | 1 | 2 |
| 2022 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Rotary valve internal combustion engine5 Jul 2022US 11,377,982 B2Rcv Engines Limited
- Valve for an internal combustion engine2 Mar 2021US 10,934,900 B2Man Truck & Bus AG
- Variable travel valve apparatus for an internal combustion engine23 Jun 2020US 10,690,085 B2JP Scope, Inc.
- Variable travel valve apparatus for an internal combustion engine4 Jun 2019US 10,309,266 B2JP Scope, Inc.
- Rotary valve internal combustion engine24 Apr 2018US 9,951,685 B2Rcv Engines Limited
- A rotary valve internal combustion engine14 Oct 2021US 2021/0317761 A1Rcv Engines Limited
- Variable travel valve apparatus for an internal combustion engine1 Apr 2021US 2021/0095614 A1JP Scope, Inc.
- Variable travel valve apparatus for an internal combustion engine7 Nov 2019US 2019/0338724 A1JP Scope, Inc.
- Valve for an internal combustion engine28 Feb 2019US 2019/0063271 A1Man Truck & Bus AG
- Tophead rotary valve (for internal combustion engines)6 Apr 2017US 2017/0096917 A1
Most cited
By later US patents
- Valve apparatus for an internal combustion engine23US 7,263,963 B2JP Scope, Inc. · 2007
- Rotary valve with seal for internal combustion engine18US 5,329,897 ARenaissance Motor Works Co. · 1994
- Rotary valves13US 4,838,220 AJaguar Cars Limited · 1989
- Gas-exchanging process for two-stroke, internal combustion engines11US 5,345,897 ARobert Bosch GmbH · 1994
- Valve apparatus for an internal combustion engine11US 7,461,619 B2JP Scope, Inc. · 2008