F04D 15/02
Stopping of pumps, or operating valves, on occurrence of unwanted conditions
F04D15/02 (Stopping of pumps, or operating valves, on occurrence of unwanted conditions) appears on 761 US grants and 758 published applications in this corpus.
Search patents in F04D- Granted patents
- 761
- Published applications
- 758
- Assignees
- 409
- Inventors
- 1,382
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 5 | 0 |
| 1978 | 2 | 0 |
| 1979 | 8 | 0 |
| 1980 | 3 | 0 |
| 1981 | 4 | 0 |
| 1982 | 6 | 0 |
| 1983 | 4 | 0 |
| 1984 | 1 | 0 |
| 1985 | 4 | 0 |
| 1986 | 3 | 0 |
| 1987 | 6 | 0 |
| 1988 | 4 | 0 |
| 1989 | 6 | 0 |
| 1990 | 7 | 0 |
| 1991 | 8 | 0 |
| 1992 | 9 | 0 |
| 1993 | 10 | 0 |
| 1994 | 8 | 0 |
| 1995 | 7 | 0 |
| 1996 | 10 | 0 |
| 1997 | 6 | 0 |
| 1998 | 7 | 0 |
| 1999 | 5 | 0 |
| 2000 | 10 | 0 |
| 2001 | 12 | 1 |
| 2002 | 18 | 16 |
| 2003 | 14 | 9 |
| 2004 | 8 | 8 |
| 2005 | 4 | 12 |
| 2006 | 9 | 12 |
| 2007 | 8 | 23 |
| 2008 | 8 | 36 |
| 2009 | 8 | 29 |
| 2010 | 19 | 24 |
| 2011 | 16 | 27 |
| 2012 | 11 | 24 |
| 2013 | 31 | 33 |
| 2014 | 23 | 33 |
| 2015 | 21 | 46 |
| 2016 | 37 | 18 |
| 2017 | 35 | 47 |
| 2018 | 18 | 48 |
| 2019 | 44 | 42 |
| 2020 | 38 | 39 |
| 2021 | 41 | 51 |
| 2022 | 41 | 48 |
| 2023 | 37 | 46 |
| 2024 | 52 | 39 |
| 2025 | 43 | 26 |
| 2026 | 16 | 21 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Stick pump assembly1 Sep 2026US 12,723,590 B2Milwaukee Electric Tool Corporation
- Liquid supply device with function of reducing generation of particles25 Aug 2026US 12,716,416 B2Samsung Electronics Co., Ltd.
- Method for providing at least one item of information relating to a hydraulic system25 Aug 2026US 12,716,433 B2KSB SE & Co. KGaA
- Twin pump unit casing having motor mounted touchscreens28 Jul 2026US 12,692,869 B2S. A. Armstrong Limited
- Fluid delivery system health monitoring systems and methods7 Jul 2026US 12,674,459 B2Oshkosh Corporation
- Twin Pump Unit Casing Having Motor Mounted Touchscreens1 Oct 2026US 2026/0298247 A1S. A. Armstrong Limited
- Fluid delivery system health monitoring systems and methods1 Oct 2026US 2026/0298249 A1Oshkosh Corporation
- Pump with anti-rotation function1 Oct 2026US 2026/0298252 A1Junsky Appliances Limited
- Method for identifying and removing a blockage of a centrifugal pump10 Sep 2026US 2026/0266295 A1Wilo SE
- Method for Checking the Properties of a Conveyed Medium of a Centrifugal Pump, in Particular for Detecting a Dry Run6 Aug 2026US 2026/0226903 A1KSB SE & Co. KGaA
Most cited
By later US patents
- Automatic pump protection system333US 4,913,625 AWestinghouse Electric Corp. · 1990
- System and method for detecting and diagnosing pump cavitation217US 6,655,922 B1Rockwell Automation Technologies, Inc. · 2003
- Electric motor187US 9,570,945 B2Grundfos Holding A/S · 2017
- Apparatus and method for monitoring a sump pump173US 5,672,050 ALynx Electronics, Inc. · 1997
- Pumping facilities and control systems171US 10,711,787 B1W. S. Darley & Co. · 2020