F15B 15/28
Means for indicating the position
Official title: Means for indicating the position, e.g. end of stroke
F15B15/28 (Means for indicating the position) appears on 803 US grants and 655 published applications in this corpus.
Search patents in F15B- Granted patents
- 803
- Published applications
- 655
- Assignees
- 468
- Inventors
- 1,589
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 1 | 0 |
| 1978 | 4 | 0 |
| 1979 | 3 | 0 |
| 1980 | 5 | 0 |
| 1981 | 3 | 0 |
| 1982 | 0 | 0 |
| 1983 | 6 | 0 |
| 1984 | 4 | 0 |
| 1985 | 5 | 0 |
| 1986 | 10 | 0 |
| 1987 | 13 | 0 |
| 1988 | 13 | 0 |
| 1989 | 17 | 0 |
| 1990 | 16 | 0 |
| 1991 | 12 | 0 |
| 1992 | 9 | 0 |
| 1993 | 13 | 0 |
| 1994 | 14 | 0 |
| 1995 | 11 | 0 |
| 1996 | 14 | 0 |
| 1997 | 9 | 0 |
| 1998 | 9 | 0 |
| 1999 | 17 | 0 |
| 2000 | 10 | 0 |
| 2001 | 20 | 5 |
| 2002 | 26 | 24 |
| 2003 | 21 | 28 |
| 2004 | 31 | 23 |
| 2005 | 20 | 23 |
| 2006 | 19 | 23 |
| 2007 | 18 | 22 |
| 2008 | 15 | 14 |
| 2009 | 16 | 20 |
| 2010 | 17 | 20 |
| 2011 | 13 | 13 |
| 2012 | 10 | 11 |
| 2013 | 8 | 25 |
| 2014 | 8 | 19 |
| 2015 | 21 | 40 |
| 2016 | 28 | 29 |
| 2017 | 24 | 29 |
| 2018 | 33 | 55 |
| 2019 | 36 | 39 |
| 2020 | 55 | 35 |
| 2021 | 32 | 33 |
| 2022 | 24 | 18 |
| 2023 | 22 | 23 |
| 2024 | 19 | 36 |
| 2025 | 25 | 24 |
| 2026 | 20 | 24 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Fluid pressure cylinder6 Oct 2026US 12,753,782 B2SMC Corporation
- Method for real-time hydraulic cylinder drift monitoring25 Aug 2026US 12,716,432 B2Caterpillar Inc.
- Hydraulic cylinder monitoring11 Aug 2026US 12,704,137 B2The Heil Co.
- Systems and methods for synchronized valve actuation28 Jul 2026US 12,693,691 B2Swagelok Company
- 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
- Constant pressure generating system24 Sep 2026US 2026/0287034 A1White's Welding, LLC
- 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
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
- Piston-cylinder assembly1,065US 4,896,584 A1990
- Linear servoactuator with integrated transformer position sensor158US 4,628,499 AScientific-Atlanta, Inc. · 1986