F15B 13/0446
With moving coil
Official title: {with moving coil, e.g. voice coil}
F15B13/0446 (With moving coil) appears on 18 US grants and 14 published applications in this corpus.
Search patents in F15B- Granted patents
- 18
- Published applications
- 14
- Assignees
- 14
- Inventors
- 33
- Latest grant
- 23 Feb 2021
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 7 |
| 2009 | 0 | 0 |
| 2010 | 2 | 0 |
| 2011 | 1 | 0 |
| 2012 | 1 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 2 |
| 2018 | 0 | 1 |
| 2019 | 1 | 2 |
| 2020 | 2 | 0 |
| 2021 | 1 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 0 |
| 2025 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Leakage modulation in hydraulic systems containing a three-way spool valve23 Feb 2021US 10,927,866 B2Eaton Intelligent Power Limited
- Leakage modulation in hydraulic systems containing a three-way spool valve24 Nov 2020US 10,844,884 B2Eaton Intelligent Power Limited
- Electric drive pivoting valve device10 Nov 2020US 10,830,369 B2Festo AG & Co.
- Intelligent load-sensing electro-hydrostatic actuator16 Apr 2019US 10,260,532 B2Beihang University
- Variable frequency and amplitude dither for electronically controlled valves21 Feb 2012US 8,118,058 B2Enfield Technologies, LLC
- Lvdt-built-in linear motor30 Oct 2025US 2025/0337308 A1Yuken Kogyo Kabushiki Kaisha
- Leakage modulation in hydraulic systems containing a three-way spool valve20 Jun 2019US 2019/0186510 A1Eaton Intelligent Power Limited
- Leakage modulation in hydraulic systems containing a three-way spool valve20 Jun 2019US 2019/0186511 A1Eaton Intelligent Power Limited
- Valve Device2 Aug 2018US 2018/0216748 A1Festo AG & Co.
- Spool assembly for control valve22 Jun 2017US 2017/0175916 A1Eaton Corporation
Most cited
By later US patents
- Electrical linear force motor for servo controls, fluid valves, and the like32US 4,040,445 A1977
- Heat dissipating voice coil activated valves24US 6,427,970 B1Young & Franklin Inc. · 2002
- Electromechanical servovalve18US 5,460,201 A1995
- Direct-operated servo valve, fluid pressure servo mechanism and control method for the direct-operated servo valve17US 5,040,569 AHitachi, Ltd. · 1991
- Equalization of pressure in an electronically controlled valve15US 7,845,370 B2Enfield Technologies, LLC · 2010