H01F 7/16
Rectilinearly-movable armatures
Official title: Rectilinearly-movable armatures (H01F7/17 takes precedence)
H01F7/16 (Rectilinearly-movable armatures) appears on 1,973 US grants and 1,546 published applications in this corpus.
Search patents in H01F- Granted patents
- 1,973
- Published applications
- 1,546
- Assignees
- 910
- Inventors
- 3,764
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 19 | 0 |
| 1977 | 14 | 0 |
| 1978 | 19 | 0 |
| 1979 | 11 | 0 |
| 1980 | 22 | 0 |
| 1981 | 30 | 0 |
| 1982 | 24 | 0 |
| 1983 | 19 | 0 |
| 1984 | 32 | 0 |
| 1985 | 29 | 0 |
| 1986 | 16 | 0 |
| 1987 | 47 | 0 |
| 1988 | 43 | 0 |
| 1989 | 34 | 0 |
| 1990 | 28 | 0 |
| 1991 | 37 | 0 |
| 1992 | 40 | 0 |
| 1993 | 32 | 0 |
| 1994 | 31 | 0 |
| 1995 | 23 | 0 |
| 1996 | 23 | 0 |
| 1997 | 19 | 0 |
| 1998 | 28 | 0 |
| 1999 | 33 | 0 |
| 2000 | 25 | 0 |
| 2001 | 31 | 13 |
| 2002 | 29 | 30 |
| 2003 | 31 | 31 |
| 2004 | 37 | 44 |
| 2005 | 42 | 36 |
| 2006 | 39 | 66 |
| 2007 | 26 | 55 |
| 2008 | 26 | 59 |
| 2009 | 34 | 56 |
| 2010 | 35 | 66 |
| 2011 | 37 | 59 |
| 2012 | 53 | 44 |
| 2013 | 52 | 61 |
| 2014 | 47 | 54 |
| 2015 | 58 | 79 |
| 2016 | 67 | 64 |
| 2017 | 61 | 98 |
| 2018 | 57 | 86 |
| 2019 | 83 | 90 |
| 2020 | 85 | 100 |
| 2021 | 76 | 77 |
| 2022 | 72 | 84 |
| 2023 | 57 | 72 |
| 2024 | 68 | 52 |
| 2025 | 61 | 44 |
| 2026 | 31 | 26 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- H01F 7/1607Armatures entering the winding1,239
- H01F 7/1638Armatures not entering the winding568
- H01F 7/165Means for guiding the movement of the armature with reduced friction85
- H01F 2007/1684Armature position measurement using coilsIndexing code64
- H01F 2007/1676Means for avoiding or reducing eddy currents in the magnetic circuitIndexing code54
- H01F 7/1653Magnetic circuit having axially spaced pole-pieces34
- H01F 2007/1661Electromagnets or actuators with anti-stick discIndexing code23
Recent patents
- Apparatus and methods for generating force in electromagnetic systems29 Sep 2026US 12,749,607 B2
- Solenoid, solenoid valve, and suspension device25 Aug 2026US 12,716,517 B2Hitachi Astemo, Ltd.
- Filling an armature chamber in an actuator18 Aug 2026US 12,712,105 B2Magnet-Schultz GmbH & Co. KG
- Electromagnetic actuator and valve having the electromagnetic actuator28 Jul 2026US 12,695,015 B2Magnetic Innovations LLC
- Optical element driving mechanism21 Jul 2026US 12,688,961 B2Actutek Corporation
- Microelectromechanical systems (mems) actuator with magnetic latching and methods for manufacturing and using the same8 Oct 2026US 2026/0307980 A1Atomic Machines, Inc.
- Actuator arrangement and vehicle assembly with such an actuator arrangement1 Oct 2026US 2026/0302030 A1
- Electromagnet with impedance element27 Aug 2026US 2026/0253776 A1Svm Schultz Verwaltungs-GmbH & Co.KG
- Electromagnetic actuator27 Aug 2026US 2026/0253777 A1
- Magnetic circuit system with enhanced intial electromagnetic attraction and high-voltage dc relay20 Aug 2026US 2026/0245820 A1Xiamen Hongfa Electric Power Controls Co., Ltd.
Most cited
By later US patents
- Force actuator with dual magnetic operation233US 5,896,076 A1999
- Proportional electropneumatic solenoid-controlled valve172US 5,407,174 APuritan-Bennett Corporation · 1995
- Actuator145US 5,256,998 ATechnische Entwicklungen Dr. Becker GmbH · 1993
- Apparatus for automatically controlling transmission of light through a lens system141US 4,264,154 APolaroid Corporation · 1981
- System and method for servo control of nonlinear electromagnetic actuators139US 6,208,497 B1Venture Scientifics, LLC · 2001