F04D 27/002
Control: by varying geometry within the pumps
Official title: {by varying geometry within the pumps, e.g. by adjusting vanes}
F04D27/002 (Control: by varying geometry within the pumps) appears on 266 US grants and 284 published applications in this corpus.
Search patents in F04D- Granted patents
- 266
- Published applications
- 284
- Assignees
- 167
- Inventors
- 713
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 3 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 2 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 4 | 0 |
| 1999 | 2 | 0 |
| 2000 | 2 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 1 |
| 2003 | 1 | 0 |
| 2004 | 1 | 3 |
| 2005 | 1 | 3 |
| 2006 | 2 | 1 |
| 2007 | 2 | 0 |
| 2008 | 0 | 1 |
| 2009 | 1 | 2 |
| 2010 | 0 | 4 |
| 2011 | 1 | 3 |
| 2012 | 2 | 3 |
| 2013 | 3 | 8 |
| 2014 | 4 | 22 |
| 2015 | 5 | 28 |
| 2016 | 6 | 30 |
| 2017 | 17 | 26 |
| 2018 | 37 | 34 |
| 2019 | 36 | 19 |
| 2020 | 27 | 30 |
| 2021 | 22 | 14 |
| 2022 | 21 | 8 |
| 2023 | 17 | 18 |
| 2024 | 14 | 5 |
| 2025 | 15 | 12 |
| 2026 | 7 | 9 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Blowing device and blowing device operating method29 Sep 2026US 12,747,738 B2Samsung Electronics Co., Ltd.
- Variable vane system for aircraft powerplant29 Sep 2026US 12,747,739 B1Rtx Corporation
- Fan assembly2 Jun 2026US 12,644,461 B2Dyson Technology Limited
- Air moving devices, aerodynamic rotor, and methods14 Apr 2026US 12,601,357 B2Whisper Aero Inc.
- Air moving devices, aerodynamic rotor, and methods3 Mar 2026US 12,565,896 B2Whisper Aero Inc.
- Systems and methods for controlling capacity of a compressor8 Oct 2026US 2026/0309355 A1Tyco Fire & Security GmbH
- Flow path adjustment mechanism and fluid delivery device30 Jul 2026US 2026/0218729 A1Nidec Corporation
- Variable inlet guide vane apparatus and systems and methods for calibrating the same23 Jul 2026US 2026/0210368 A1
- Systems and methods for operating a compressor of an hvac&r system23 Jul 2026US 2026/0210369 A1Tyco Fire & Security GmbH
- Gas turbine engine having a sensor assembly for monitoring propeller whirl7 May 2026US 2026/0126048 A1General Electric Company
Most cited
By later US patents
- Control system for cooling fan assembly having variable pitch blades44US 6,253,716 B1Horton, Inc. · 2001
- Ceiling fan with variable blade pitch and variable speed control43US 8,721,305 B2Delta T, LLC · 2014
- Pitch range for a variable pitch fan31US 10,288,083 B2General Electric Company · 2019
- Controller for variable pitch fan system21US 6,729,844 B22004
- Exhaust device21US 8,408,981 B2Msi Computer (Shenzhen) Co., Ltd. · 2013