H02H 7/0827
Responsive to underload or no-load
Official title: {responsive to underload or no-load, e.g. pump-off control circuits for pump motors}
H02H7/0827 (Responsive to underload or no-load) appears on 21 US grants and 13 published applications in this corpus.
Search patents in H02H- Granted patents
- 21
- Published applications
- 13
- Assignees
- 19
- Inventors
- 49
- Latest grant
- 7 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 1 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 2 |
| 2012 | 0 | 0 |
| 2013 | 1 | 3 |
| 2014 | 0 | 0 |
| 2015 | 1 | 1 |
| 2016 | 1 | 0 |
| 2017 | 1 | 1 |
| 2018 | 0 | 0 |
| 2019 | 1 | 1 |
| 2020 | 1 | 1 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 1 |
| 2025 | 0 | 2 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Control circuit of galvanometer motor and LiDAR7 Jul 2026US 12,676,471 B2Suteng Innovation Technology Co., Ltd.
- Switching power supply device and semiconductor device29 Dec 2020US 10,879,811 B2Rohm Co., Ltd.
- Power tool and battery pack12 Feb 2019US 10,205,198 B2Koki Holdings Co., Ltd.
- Protective redundant subsystem for power tools1 Aug 2017US 9,722,525 B2Black & Decker Inc.
- Method for determining rotational speed of an electric motor in a power tool19 Jan 2016US 9,240,747 B2Black & Decker Inc.
- Contactor selection to open under load20 Nov 2025US 2025/0357750 A1Caterpillar Inc.
- Adaptive undervoltage protection for three-phase load using single current sensor5 Jun 2025US 2025/0183652 A1Copeland Comfort Control LP
- Control circuit of galvanometer motor and lidar2 May 2024US 2024/0146049 A1Suteng Innovation Technology Co., Ltd.
- Circuit substrate and electric oil pump1 Oct 2020US 2020/0313517 A1Nidec Tosok Corporation
- Switching power supply device and semiconductor device26 Dec 2019US 2019/0393796 A1Rohm Co., Ltd.
Most cited
By later US patents
- Pump control responsive to voltage-current phase angle138US 5,362,206 AAutomation Associates, Inc. · 1994
- Electric motor underload protection system118US 4,703,387 AFranklin Electric Co., Inc. · 1987
- Digital logic control system for three-phase submersible pump motor107US 4,021,700 ABorg-Warner Corporation · 1977
- Electronic motor load sensing device97US 5,473,497 AFranklin Electric Co., Inc. · 1995
- Water pump protector94US 4,420,787 ASpring Valley Associates, Inc. · 1983