F04D 29/364
The blades having only a predetermined number of possible positions
Official title: {The blades having only a predetermined number of possible positions}
F04D29/364 (The blades having only a predetermined number of possible positions) appears on 20 US grants and 13 published applications in this corpus.
Search patents in F04D- Granted patents
- 20
- Published applications
- 13
- Assignees
- 15
- Inventors
- 33
- Latest grant
- 14 Jan 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 1 |
| 2004 | 2 | 2 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 1 | 0 |
| 2011 | 0 | 1 |
| 2012 | 0 | 0 |
| 2013 | 1 | 2 |
| 2014 | 1 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 1 | 0 |
| 2018 | 0 | 1 |
| 2019 | 2 | 2 |
| 2020 | 2 | 1 |
| 2021 | 1 | 0 |
| 2022 | 1 | 2 |
| 2023 | 1 | 0 |
| 2024 | 0 | 0 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Double-layer blade ceiling fan capable of adjusting arrangement of blades14 Jan 2025US 12,196,214 B1Air Cool Industrial Co., Ltd.
- Fan wheel25 Jul 2023US 11,708,836 B2Ie Assets GmbH & Co. KG
- Precision blade pitch adjustment6 Dec 2022US 11,518,506 B2Textron Innovations Inc.
- Pump systems with variable diameter impeller devices27 Apr 2021US 10,989,216 B2
- Deployable fan with linear actuator1 Dec 2020US 10,851,798 B2Swiss Module Group, LLC
- Precision blade pitch adjustment15 Sep 2022US 2022/0289368 A1Bell Textron Inc.
- Fan wheel31 Mar 2022US 2022/0099098 A1Ie Assets GmbH & Co. KG
- Pump systems with variable diameter impeller devices9 Apr 2020US 2020/0109717 A1
- Pump systems with variable diameter impeller devices25 Jul 2019US 2019/0226490 A1
- Deployable Fan with Linear Actuator25 Apr 2019US 2019/0120247 A1Swiss Module Group, LLC
Most cited
By later US patents
- Detachable blades for ceiling fans42US 5,180,284 A1993
- Fan with self closing blades25US 6,386,826 B1International Business Machines Corporation · 2002
- Articulated mounting bracket for ceiling fans23US 5,108,260 A1992
- Propeller with passive variable pitch and rotatable base17US 10,479,482 B1Kitty Hawk Corporation · 2019
- Forced air cooling fan having pivotal fan blades for unidirectional air flow10US 6,699,013 B2Quantum Corporation · 2004