F01L 1/443
Comprising a lift valve and at least one rotary valve
Official title: {comprising a lift valve and at least one rotary valve}
F01L1/443 (Comprising a lift valve and at least one rotary valve) appears on 16 US grants and 1 published applications in this corpus.
Search patents in F01L- Granted patents
- 16
- Published applications
- 1
- Assignees
- 5
- Inventors
- 23
- Latest grant
- 30 Jul 2013
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 3 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 3 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 1 |
| 2012 | 0 | 0 |
| 2013 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Intake and exhaust apparatus for four-stroke internal-combustion engine30 Jul 2013US 8,495,977 B2
- Internal combustion engine5 Aug 2003US 6,601,379 B1DIRO Konstruktions GmbH & Co, KG
- Rotary distribution system internal combustion engine14 Aug 2001US 6,273,038 B1Hycomp, Inc.
- Cylinder head for a four stroke combustion engine7 Oct 1997US 5,673,656 AKalivoda Engineering
- Engine rotary valves30 Jul 1996US 5,540,054 A
Most cited
By later US patents
- Rotary valve and system for duration and phase control32US 5,105,784 AGeneral Motors Corporation · 1992
- Rotary-poppet valve internal combustion engine24US 4,075,986 A1978
- Combined sleeve/poppet valve for internal combustion engine21US 5,398,647 A1995
- Fluid controlling system for an engine19US 5,522,358 ACaterpillar Inc. · 1996
- Method of operating an IC engine and an IC engine for performing the method12US 4,928,648 A1990