F01C 20/04
Control of, monitoring of, or safety arrangements for, machines or engines: specially
Official title: specially adapted for reversible machines or engines
F01C20/04 (Control of, monitoring of, or safety arrangements for, machines or engines: specially) appears on 34 US grants and 28 published applications in this corpus.
Search patents in F01C- Granted patents
- 34
- Published applications
- 28
- Assignees
- 25
- Inventors
- 68
- Latest grant
- 16 Dec 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 2 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 4 | 1 |
| 2002 | 1 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 2 |
| 2006 | 1 | 3 |
| 2007 | 3 | 1 |
| 2008 | 1 | 1 |
| 2009 | 1 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 0 |
| 2012 | 1 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 1 |
| 2015 | 2 | 5 |
| 2016 | 2 | 2 |
| 2017 | 1 | 2 |
| 2018 | 0 | 1 |
| 2019 | 2 | 1 |
| 2020 | 3 | 0 |
| 2021 | 0 | 2 |
| 2022 | 0 | 0 |
| 2023 | 1 | 1 |
| 2024 | 1 | 3 |
| 2025 | 2 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Quieted front exhaust motor16 Dec 2025US 12,496,699 B2Ingersoll-Rand Industrial U.S., Inc.
- Dual gerotor apparatus, a powertrain assembley and an electrified vehicle27 May 2025US 12,313,067 B2Valeo Powertrain (Nanjing) Co., Ltd.
- Reversible gerotor pump system2 Jan 2024US 11,859,614 B2Eaton Intelligent Power Limited
- Reversing mechanism for a power tool3 Jan 2023US 11,541,525 B2Snap-on Incorporated
- Pneumatic engine and related methods5 May 2020US 10,641,239 B2Sunnyco Inc.
- Air motor with increased dwell at max vane extension7 Nov 2024US 2024/0368992 A1
- Quieted front exhaust motor24 Oct 2024US 2024/0351180 A1Ingersoll-Rand Industrial U.S., Inc.
- A dual gerotor apparatus, a powertrain assembley and an electrified vehicle11 Jan 2024US 2024/0011483 A1Valeo Powertrain (Nanjing) Co., Ltd.
- Reversible gerotor pump system26 Jan 2023US 2023/0022514 A1Eaton Intelligent Power Limited
- Reversing mechanism for a power tool23 Dec 2021US 2021/0394351 A1Snap-on Incorporated
Most cited
By later US patents
- Energy recovery system for large motor vehicles97US 5,121,607 A1992
- Distributor for the progressive and reversible supply of an air motor, in particular for hand-held dental instruments40US 4,344,746 ASociete Micro-Mega S.A. · 1982
- Screw engine with regenerative braking27US 5,241,817 A1993
- Fluid flow reversing and regulating ring24US 4,962,787 AIngersoll-Rand Company · 1990
- Pneumatic tool24US 7,040,414 B12006