F01C 20/20
By changing the form of the inner or outlet contour of the
Official title: by changing the form of the inner or outlet contour of the working chamber
F01C20/20 (By changing the form of the inner or outlet contour of the) appears on 23 US grants and 5 published applications in this corpus.
Search patents in F01C- Granted patents
- 23
- Published applications
- 5
- Assignees
- 9
- Inventors
- 25
- Latest grant
- 4 May 2021
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 3 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 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 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 1 | 1 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 1 |
| 2015 | 1 | 0 |
| 2016 | 1 | 1 |
| 2017 | 0 | 0 |
| 2018 | 1 | 0 |
| 2019 | 0 | 1 |
| 2020 | 0 | 0 |
| 2021 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Control device to achieve variable compression ratio for triangle rotary engine4 May 2021US 10,995,618 B2Jiangsu University
- Vane heat engine30 Oct 2018US 10,113,427 B1
- HCCI rotary engine with variable compression ratio control6 Sep 2016US 9,435,257 B2Customachinery Inc.
- Gerotor motor balancing plate structure20 Oct 2015US 9,163,508 B2White Drive Products, Inc.
- Rotary compressor and expander, and rotary engine using the same26 Jan 2010US 7,650,871 B2Turnstile Technology Limited
- Control device to achieve variable compression ratio for triangle rotary engine10 Jan 2019US 2019/0010806 A1Jiangsu University
- Hcci rotary engine with variable compression ratio control26 May 2016US 2016/0146009 A1Customachinery Inc.
- Gerotor motor balancing plate structure17 Apr 2014US 2014/0105775 A1White Drive Products, Inc.
- Rotary vane engines and methods23 Dec 2010US 2010/0319654 A1
- Rotary compressor and expander, and rotary engine using the same2 Aug 2007US 2007/0175435 A1Turnstile Technology Limited
Most cited
By later US patents
- Fluid pressure device and shuttle valve assembly therefor21US 4,343,601 AEaton Corporation · 1982
- Portable pneumatic nut running tool having air shut-off controls14US 4,120,604 A1978
- Rotary gerotor hydraulic device with fluid control passageways through the rotor14US 4,474,544 A1984
- Throttling means for geothermal streams13US 3,977,818 AHydrothermal Power Co., Ltd. · 1976
- Gerotor motor balancing plate13US 4,717,320 A1988