F01C 20/08
Control of, monitoring of, or safety arrangements for, machines or engines: characterised
Official title: characterised by varying the rotational speed
F01C20/08 (Control of, monitoring of, or safety arrangements for, machines or engines: characterised) appears on 21 US grants and 13 published applications in this corpus.
Search patents in F01C- Granted patents
- 21
- Published applications
- 13
- Assignees
- 18
- Inventors
- 42
- Latest grant
- 3 May 2022
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 3 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 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 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 2 |
| 2006 | 2 | 1 |
| 2007 | 2 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 1 | 0 |
| 2011 | 0 | 1 |
| 2012 | 0 | 0 |
| 2013 | 1 | 0 |
| 2014 | 0 | 2 |
| 2015 | 0 | 1 |
| 2016 | 0 | 0 |
| 2017 | 2 | 2 |
| 2018 | 0 | 1 |
| 2019 | 2 | 0 |
| 2020 | 0 | 1 |
| 2021 | 0 | 0 |
| 2022 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Compressed air energy storage generator3 May 2022US 11,319,948 B2Kobe Steel, Ltd.
- Electromagnetic only vane coordination of a cat and mouse engine12 Nov 2019US 10,472,965 B2
- Method for expanding a gas flow and device thereby applied9 Apr 2019US 10,253,631 B2Atlas Copco Airpower, Naamloze Vennootschap
- Variable speed control of fluid driven tools17 Oct 2017US 9,789,599 B2Ingersoll-Rand Company
- Variable speed control of fluid driven motors27 Jun 2017US 9,687,978 B2Ingersoll-Rand Company
- Compressed air energy storage generator15 Oct 2020US 2020/0325891 A1Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
- Electromagnetic only vane coordination of a cat and mouse engine19 Apr 2018US 2018/0106151 A1
- Optimized performance strategy for a multi-stage volumetric expander15 Jun 2017US 2017/0167302 A1Eaton Corporation
- Method for expanding a gas flow and device thereby applied6 Apr 2017US 2017/0096897 A1Atlas Copco Airpower, Naamloze Vennootschap
- Hydraulic gear motor, gear pump and gearbox with continuously variable parameters10 Dec 2015US 2015/0354357 A1
Most cited
By later US patents
- Fluid flow reversing and regulating ring24US 4,962,787 AIngersoll-Rand Company · 1990
- Pneumatic tool24US 7,040,414 B12006
- Compact high torque hydraulic motors19US 4,586,885 AParker-Hannifin Corporation · 1986
- Air-operated, hydraulically-controlled drillmotor17US 4,453,868 AWinslow/McDowell, Inc. · 1984
- System utilizing waste heat of internal combustion engine15US 7,181,919 B2Denso Corporation · 2007