F01C 21/186
For variable fluid distribution
Official title: {for variable fluid distribution}
F01C21/186 (For variable fluid distribution) appears on 27 US grants and 16 published applications in this corpus.
Search patents in F01C- Granted patents
- 27
- Published applications
- 16
- Assignees
- 17
- Inventors
- 36
- Latest grant
- 31 Dec 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 2 | 0 |
| 1989 | 0 | 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 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 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 | 0 |
| 2012 | 0 | 1 |
| 2013 | 0 | 1 |
| 2014 | 1 | 3 |
| 2015 | 2 | 4 |
| 2016 | 1 | 5 |
| 2017 | 3 | 0 |
| 2018 | 1 | 1 |
| 2019 | 1 | 0 |
| 2020 | 2 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 1 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Rotary positive displacement device31 Dec 2024US 12,180,960 B2Spherical Rotors Inc.
- Intake/outlet pipe optimization method for rotary engine24 Mar 2020US 10,598,087 B2National Chung-Shan Institute of Science and Techn
- Reversing mechanism for a power tool17 Mar 2020US 10,590,770 B2Snap-on Incorporated
- Rotary expansible chamber devices and systems incorporating the same12 Nov 2019US 10,472,966 B2
- Planetary rotary engine with rotary ring valves4 Dec 2018US 10,145,243 B2Planetary Rotor Engine Company
- Rotary positive displacement device21 Nov 2024US 2024/0384720 A1Spherical Rotors Inc.
- Intake/outlet pipe optimization method for rotary engine13 Sep 2018US 2018/0258844 A1National Chung Shan Institute of Science and Technology
- Planetary rotary engine with rotary ring valves29 Sep 2016US 2016/0281595 A1Planetary Rotor Engine Company
- Reversing Mechanism for a Power Tool8 Sep 2016US 2016/0258291 A1Snap-on Incorporated
- Positive displacement turbine1 Sep 2016US 2016/0251960 A1
Most cited
By later US patents
- Fluid impulse torque tool30US 4,418,764 AGiken Kogyo Kabushiki Kaisha · 1983
- Pneumatically operated rammer25US 5,340,233 AM-B-W Inc. · 1994
- Automatic fluid torque responsive shut-off mechanism for an air tool16US 4,772,186 AThe Aro Corporation · 1988
- Reversible radial vane air motor15US 4,740,144 ADresser Industries, Inc. · 1988
- Rotary engine14US 3,941,527 A1976