F02C 7/275
Mechanical drives
F02C7/275 (Mechanical drives) appears on 556 US grants and 580 published applications in this corpus.
Search patents in F02C- Granted patents
- 556
- Published applications
- 580
- Assignees
- 111
- Inventors
- 935
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 3 | 0 |
| 1989 | 5 | 0 |
| 1990 | 8 | 0 |
| 1991 | 5 | 0 |
| 1992 | 11 | 0 |
| 1993 | 7 | 0 |
| 1994 | 5 | 0 |
| 1995 | 4 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 3 | 0 |
| 2001 | 7 | 1 |
| 2002 | 2 | 1 |
| 2003 | 5 | 9 |
| 2004 | 7 | 9 |
| 2005 | 9 | 13 |
| 2006 | 14 | 16 |
| 2007 | 7 | 9 |
| 2008 | 6 | 11 |
| 2009 | 6 | 14 |
| 2010 | 9 | 12 |
| 2011 | 11 | 15 |
| 2012 | 12 | 26 |
| 2013 | 12 | 18 |
| 2014 | 20 | 20 |
| 2015 | 12 | 20 |
| 2016 | 13 | 19 |
| 2017 | 20 | 53 |
| 2018 | 25 | 54 |
| 2019 | 42 | 40 |
| 2020 | 45 | 56 |
| 2021 | 51 | 36 |
| 2022 | 37 | 38 |
| 2023 | 37 | 23 |
| 2024 | 26 | 25 |
| 2025 | 31 | 31 |
| 2026 | 24 | 11 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Braking control assembly for an aircraft gas turbine engine and method of using same29 Sep 2026US 12,749,993 B2Pratt & Whitney Canada Corp.
- Turbine engine including an air turbine starter and a bleed air circuit22 Sep 2026US 12,742,422 B2Unison Industries, LLC
- Hybrid gas turbofan powered idle descent mode15 Sep 2026US 12,735,991 B2Rtx Corporation
- Hybrid turbine starter for a gas turbine engine8 Sep 2026US 12,729,650 B1General Electric Company
- Rotary assembly1 Sep 2026US 12,723,519 B2ROLLS-ROYCE plc
- Method of operating a turbine engine including an air turbine starter20 Aug 2026US 2026/0243201 A1Unison Industries, LLC
- Gas turbine engine with starting system and method for using the same23 Jul 2026US 2026/0210294 A1Rtx Corporation
- Air turbine starters and systems for gas turbine engines18 Jun 2026US 2026/0168444 A1Unison Industries, LLC
- Turbine engine including an air turbine starter and a bleed air circuit28 May 2026US 2026/0146562 A1Unison Industries, LLC
- Emergency start of a gas turbine engine21 May 2026US 2026/0139627 A1Rolls-Royce North American Technologies Inc.
Most cited
By later US patents
- Aircraft engine starting and emergency power generating system275US 4,979,362 ASundstrand Corporation · 1990
- Integrated bleed air and engine starting system108US 6,305,156 B1AlliedSignal Inc. · 2001
- Gas turbine engine powered aircraft environmental control system and boundary layer bleed106US 5,143,329 AGeneral Electric Company · 1992
- Clutch to disconnect loads during turbine start-up105US 5,174,109 ASundstrand Corporation · 1992
- High to low pressure spool summing gearbox for accessory power extraction and electric start101US 7,882,691 B2Hamilton Sundstrand Corporation · 2011