G01D 5/2291
Linear or rotary variable differential transformers having a single primary coil and
Official title: {Linear or rotary variable differential transformers (LVDTs/RVDTs) having a single primary coil and two secondary coils}
G01D5/2291 (Linear or rotary variable differential transformers having a single primary coil and) appears on 246 US grants and 229 published applications in this corpus.
Search patents in G01D- Granted patents
- 246
- Published applications
- 229
- Assignees
- 175
- Inventors
- 454
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 3 | 0 |
| 1979 | 2 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 4 | 0 |
| 1983 | 0 | 0 |
| 1984 | 3 | 0 |
| 1985 | 3 | 0 |
| 1986 | 4 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 3 | 0 |
| 1990 | 1 | 0 |
| 1991 | 4 | 0 |
| 1992 | 2 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 4 | 0 |
| 1996 | 0 | 0 |
| 1997 | 3 | 0 |
| 1998 | 5 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 4 | 5 |
| 2003 | 3 | 2 |
| 2004 | 4 | 7 |
| 2005 | 3 | 7 |
| 2006 | 5 | 9 |
| 2007 | 6 | 7 |
| 2008 | 10 | 2 |
| 2009 | 1 | 4 |
| 2010 | 0 | 6 |
| 2011 | 3 | 3 |
| 2012 | 5 | 6 |
| 2013 | 4 | 6 |
| 2014 | 4 | 6 |
| 2015 | 5 | 10 |
| 2016 | 11 | 10 |
| 2017 | 7 | 12 |
| 2018 | 9 | 14 |
| 2019 | 17 | 15 |
| 2020 | 13 | 23 |
| 2021 | 17 | 23 |
| 2022 | 17 | 13 |
| 2023 | 17 | 16 |
| 2024 | 16 | 9 |
| 2025 | 10 | 10 |
| 2026 | 3 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Linear variable differential transducer23 Sep 2025US 12,424,371 B2Hamilton Sundstrand Corporation
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- High lift system monitoring and control arrangement for aircraft27 Aug 2026US 2026/0249981 A1Airbus Operations GmbH
- Rotary position sensor13 Aug 2026US 2026/0238103 A1Honeywell International Inc.
- Ventless tocodynamometer30 Apr 2026US 2026/0114797 A1GE Precision Healthcare LLC
- Transformerless demodulation of synchro-resolver26 Feb 2026US 2026/0056034 A1Hamilton Sundstrand Corporation
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Most cited
By later US patents
- Smart instrument tray RFID reader424US 7,362,228 B2Warsaw Orthepedic, Inc. · 2008
- Linear servoactuator with integrated transformer position sensor158US 4,628,499 AScientific-Atlanta, Inc. · 1986
- Variable differential transformer system and method providing improved temperature stability and sensor fault detection apparatus46US 5,777,468 ATexas Instruments Incorporated · 1998
- Inductive non-contact measurement of a relative movement or relative positioning of a first object relative to a second object45US 8,159,213 B2Nanotec Solution · 2012
- Digital inductive position sensor35US 6,642,711 B2Texas Instruments Incorporated · 2003