H02P 25/145
Whereby the speed is regulated by measuring the motor speed and comparing
Official title: {whereby the speed is regulated by measuring the motor speed and comparing it with a given physical value, speed feedback}
H02P25/145 (Whereby the speed is regulated by measuring the motor speed and comparing) appears on 46 US grants and 13 published applications in this corpus.
Search patents in H02P- Granted patents
- 46
- Published applications
- 13
- Assignees
- 30
- Inventors
- 90
- Latest grant
- 21 Jan 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 3 | 0 |
| 1982 | 2 | 0 |
| 1983 | 2 | 0 |
| 1984 | 3 | 0 |
| 1985 | 2 | 0 |
| 1986 | 3 | 0 |
| 1987 | 1 | 0 |
| 1988 | 3 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 3 |
| 2008 | 1 | 0 |
| 2009 | 1 | 0 |
| 2010 | 0 | 0 |
| 2011 | 1 | 2 |
| 2012 | 0 | 0 |
| 2013 | 1 | 1 |
| 2014 | 0 | 1 |
| 2015 | 1 | 1 |
| 2016 | 2 | 0 |
| 2017 | 1 | 0 |
| 2018 | 0 | 1 |
| 2019 | 1 | 0 |
| 2020 | 1 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 2 |
| 2024 | 1 | 0 |
| 2025 | 1 | 0 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Jam detection and jam tolerant motion control21 Jan 2025US 12,203,428 B2Woodward, Inc.
- Multi-axis servo control system26 Nov 2024US 12,155,328 B2Delta Electronics, Inc.
- Speed control system of a universal motor21 Jul 2020US 10,720,870 B1
- Current sensor abnormality diagnosis device8 Jan 2019US 10,177,694 B2Denso Corporation
- Protective redundant subsystem for power tools1 Aug 2017US 9,722,525 B2Black & Decker Inc.
- Jam detection and jam tolerant motion control25 Jun 2026US 2026/0177019 A1Woodward, Inc.
- Multi-axis servo control system27 Apr 2023US 2023/0131842 A1Delta Electronics, Inc.
- Jam detection and jam tolerant motion control2 Mar 2023US 2023/0061579 A1Woodward, Inc.
- Current sensor abnormality diagnosis device12 Apr 2018US 2018/0102719 A1Denso Corporation
- Protective Redudant Subsystem for Power Tools8 Oct 2015US 2015/0288250 A1Black & Decker Inc.
Most cited
By later US patents
- Anti-kickback power tool control220US 4,267,914 ABlack & Decker Inc. · 1981
- Speed control circuit for an electric power tool96US 4,412,158 ABlack & Decker Inc. · 1983
- Digital control system for electric motors in power tools and the like95US 4,307,325 ABlack & Decker Inc. · 1981
- Speed regulator for power tool87US 4,513,381 AThe Singer Company · 1985
- Speed control for a universal AC/DC motor85US 5,495,161 ASencorp · 1996