H01F 7/145
Rotary electromagnets with variable gap
Official title: {Rotary electromagnets with variable gap (with fixed gap or torque motors H02K26/00)}
H01F7/145 (Rotary electromagnets with variable gap) appears on 150 US grants and 45 published applications in this corpus.
Search patents in H01F- Granted patents
- 150
- Published applications
- 45
- Assignees
- 96
- Inventors
- 255
- Latest grant
- 30 Apr 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 2 | 0 |
| 1978 | 5 | 0 |
| 1979 | 4 | 0 |
| 1980 | 3 | 0 |
| 1981 | 3 | 0 |
| 1982 | 3 | 0 |
| 1983 | 4 | 0 |
| 1984 | 4 | 0 |
| 1985 | 14 | 0 |
| 1986 | 6 | 0 |
| 1987 | 8 | 0 |
| 1988 | 5 | 0 |
| 1989 | 6 | 0 |
| 1990 | 4 | 0 |
| 1991 | 11 | 0 |
| 1992 | 3 | 0 |
| 1993 | 3 | 0 |
| 1994 | 7 | 0 |
| 1995 | 3 | 0 |
| 1996 | 2 | 0 |
| 1997 | 4 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 1 |
| 2002 | 2 | 3 |
| 2003 | 1 | 2 |
| 2004 | 4 | 1 |
| 2005 | 1 | 1 |
| 2006 | 1 | 2 |
| 2007 | 0 | 2 |
| 2008 | 0 | 2 |
| 2009 | 1 | 2 |
| 2010 | 1 | 2 |
| 2011 | 2 | 2 |
| 2012 | 1 | 1 |
| 2013 | 2 | 1 |
| 2014 | 3 | 1 |
| 2015 | 1 | 0 |
| 2016 | 1 | 0 |
| 2017 | 0 | 3 |
| 2018 | 1 | 4 |
| 2019 | 5 | 5 |
| 2020 | 0 | 4 |
| 2021 | 5 | 3 |
| 2022 | 1 | 1 |
| 2023 | 3 | 1 |
| 2024 | 2 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Edge-compressed tilting armature for a vehicle solenoid valve30 Apr 2024US 11,971,115 B2KNORR-BREMSE Systeme fuer Nutzfahrzeuge GmbH
- Radio-access-technology-specific access restrictions19 Mar 2024US 11,932,320 B2Nokia Solutions and Networks Oy
- High force rotary actuator13 Jun 2023US 11,677,296 B2QM Power, Inc.
- Torque motor housing17 Jan 2023US 11,557,952 B2Hamilton Sundstrand Corporation
- Electromagnetic system10 Jan 2023US 11,551,897 B2Tyco Electronics (Shenzhen) Co. Ltd.
- Rotary-Segment Electromechanical System with Reluctance Boost25 Jan 2024US 2024/0029983 A1Tyco Electronics Austria GmbH
- Edge-compressed tilting armature for a vehicle solenoid valve20 Apr 2023US 2023/0119057 A1KNORR-BREMSE Systeme fuer Nutzfahrzeuge GmbH
- Radio-access-technology-specific access restrictions23 Jun 2022US 2022/0194493 A1Nokia Solutions and Networks Oy
- High force rotary actuator25 Nov 2021US 2021/0367477 A1QM Power, Inc.
- Servo-actuated rotary magnetic latching mechanism and method10 Jun 2021US 2021/0174995 A1King Abdullah University of Science and Technology
Most cited
By later US patents
- Control valve assembly including valve position sensor66US 4,809,742 APneumo Abex Corporation · 1989
- Moving magnet type instrument56US 4,047,136 ANihon Beru-Haueru Kabushiki Kaisha (Bell & Howell Japan, Ltd.) · 1977
- Monophase electromagnetic rotary actuator of travel between 60 and 120 degrees48US 5,334,893 AMoving Magnet Technologies · 1994
- Limited rotation motor43US 4,135,119 AGeneral Scanning, Inc. · 1979
- Permanent magnet brushless torque actuator43US 5,337,030 ALucas Industries Limited · 1994