F01L 15/02
Valve-gear or valve arrangements: with valves other than cylindrical, sleeve, or part-annularly-shaped
Official title: with valves other than cylindrical, sleeve, or part-annularly-shaped, e.g. flat D-valves
F01L15/02 (Valve-gear or valve arrangements: with valves other than cylindrical, sleeve, or part-annularly-shaped) appears on 5 US grants and 4 published applications in this corpus.
Search patents in F01L- Granted patents
- 5
- Published applications
- 4
- Assignees
- 3
- Inventors
- 7
- Latest grant
- 2 Feb 2016
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1990 | 2 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 1 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 1 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 1 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Valve assembly and method for high temperature engines2 Feb 2016US 9,249,696 B2Zajac Optimum Output Motors, Inc.
- Valve assembly using pressurized medium for controlling operating conditions of a two-stroke engine12 Jun 2001US 6,244,227 B1Bombardier Inc.
- Reciprocating 2-stroke cycle internal combustion engine16 Nov 1993US 5,261,359 A
- Multicyclinder self-starting uniflow engine14 Aug 1990US 4,947,731 A
- Multicylinder self-starting uniflow engine3 Jul 1990US 4,938,117 A
- Replaceable Valve Assembly20 Oct 2022US 2022/0333513 A1
- Valve Assembly and Method for High Temperature Engines27 Jun 2013US 2013/0160726 A1Zajac Optimum Output Motors, Inc.
- Methods and apparatus to use engine valves as both intake and exhaust valves20 Sep 2007US 2007/0215078 A1Sturman Digital Systems, LLC
- Power system device16 Sep 2004US 2004/0177748 A1
Most cited
By later US patents
- Reciprocating 2-stroke cycle internal combustion engine17US 5,261,359 A1993
- Valve assembly using pressurized medium for controlling operating conditions of a two-stroke engine16US 6,244,227 B1Bombardier Inc. · 2001
- Multicyclinder self-starting uniflow engine8US 4,947,731 A1990
- Multicylinder self-starting uniflow engine1US 4,938,117 A1990