F15B 15/2815
Position sensing, i.e. means for continuous measurement of position
Official title: {Position sensing, i.e. means for continuous measurement of position, e.g. LVDT}
F15B15/2815 (Position sensing, i.e. means for continuous measurement of position) appears on 575 US grants and 508 published applications in this corpus.
Search patents in F15B- Granted patents
- 575
- Published applications
- 508
- Assignees
- 359
- Inventors
- 1,195
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 0 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 4 | 0 |
| 1984 | 4 | 0 |
| 1985 | 4 | 0 |
| 1986 | 7 | 0 |
| 1987 | 5 | 0 |
| 1988 | 9 | 0 |
| 1989 | 10 | 0 |
| 1990 | 9 | 0 |
| 1991 | 9 | 0 |
| 1992 | 5 | 0 |
| 1993 | 6 | 0 |
| 1994 | 7 | 0 |
| 1995 | 5 | 0 |
| 1996 | 10 | 0 |
| 1997 | 5 | 0 |
| 1998 | 4 | 0 |
| 1999 | 10 | 0 |
| 2000 | 7 | 0 |
| 2001 | 13 | 4 |
| 2002 | 21 | 13 |
| 2003 | 13 | 19 |
| 2004 | 22 | 16 |
| 2005 | 13 | 18 |
| 2006 | 16 | 18 |
| 2007 | 13 | 16 |
| 2008 | 11 | 10 |
| 2009 | 13 | 12 |
| 2010 | 13 | 16 |
| 2011 | 9 | 12 |
| 2012 | 7 | 9 |
| 2013 | 5 | 18 |
| 2014 | 6 | 11 |
| 2015 | 16 | 34 |
| 2016 | 21 | 24 |
| 2017 | 17 | 21 |
| 2018 | 24 | 42 |
| 2019 | 26 | 32 |
| 2020 | 46 | 30 |
| 2021 | 28 | 27 |
| 2022 | 22 | 17 |
| 2023 | 18 | 20 |
| 2024 | 15 | 31 |
| 2025 | 23 | 21 |
| 2026 | 16 | 17 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- F15B 15/2861Using magnetic means219
- F15B 15/2869Using electromagnetic radiation91
- F15B 15/2838With out using position sensors69
- F15B 15/2846Using detection of markings68
- F15B 15/2853Using potentiometers27
- F15B 15/2884Using sound25
- F15B 15/283Using a cable wrapped on a drum and attached to the piston24
- F15B 15/2823By a screw mechanism attached to the piston16
Recent patents
- Hydraulic cylinder monitoring11 Aug 2026US 12,704,137 B2The Heil Co.
- Method for determining a piston position in a hydraulic cylinder drive, method for operating an arrangement including a hydraulic cylinder drive, and mechanism for implementing the methods7 Jul 2026US 12,674,476 B2Robert Bosch GmbH
- Systems and methods for processing ultrasonic signals to detect the position of a piston30 Jun 2026US 12,669,138 B2Schlumberger Technology Corporation
- Cylinder/piston assembly with eccentric piston rod2 Jun 2026US 12,644,478 B2Weber-Hydraulik GmbH
- Electrohydraulic actuating device having integrated electrical functional elements26 May 2026US 12,638,027 B2Emg Automation GmbH
- Hydraulic Isolation Cylinder-Based System6 Aug 2026US 2026/0226921 A1SRI Energy, Inc.
- Contact estimation method, contact estimation program, and contact estimation device30 Jul 2026US 2026/0216889 A1Bridgestone Corporation
- Lifting machine30 Jul 2026US 2026/0218490 A1Manitou Bf
- Three servovalve thrust reverser actuator system23 Jul 2026US 2026/0210311 A1
- Method for the detection of a position of an actuator element of a pneumatic actuator amid the use of a detection device, as well as a system of a pneumatic actuator and a detection device16 Jul 2026US 2026/0201912 A1Festo AG & Co.
Most cited
By later US patents
- Pneumatic telescoping cylinder and method1,499US 5,341,724 A1994
- Self-induction-type stroke sensor1,339US 6,512,360 B1Amiteq Co., Ltd. · 2003
- Magnetic position sensor for measuring linear displacement1,173US 6,670,806 B2Koninklijke Philips Electronics N. V. · 2003
- Linear servoactuator with integrated transformer position sensor158US 4,628,499 AScientific-Atlanta, Inc. · 1986
- Magnetostrictive linear displacement transducer for a shock absorber150US 5,952,823 AMTS Systems Corporation · 1999