F15B 15/2807
Position switches, i.e. means for sensing of discrete positions only
Official title: {Position switches, i.e. means for sensing of discrete positions only, e.g. limit switches}
F15B15/2807 (Position switches, i.e. means for sensing of discrete positions only) appears on 168 US grants and 134 published applications in this corpus.
Search patents in F15B- Granted patents
- 168
- Published applications
- 134
- Assignees
- 108
- Inventors
- 327
- Latest grant
- 28 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 3 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 5 | 0 |
| 1989 | 6 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 3 | 0 |
| 1998 | 3 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 5 | 1 |
| 2002 | 5 | 7 |
| 2003 | 5 | 6 |
| 2004 | 6 | 5 |
| 2005 | 4 | 3 |
| 2006 | 3 | 7 |
| 2007 | 6 | 5 |
| 2008 | 3 | 2 |
| 2009 | 0 | 3 |
| 2010 | 3 | 3 |
| 2011 | 1 | 1 |
| 2012 | 2 | 1 |
| 2013 | 3 | 4 |
| 2014 | 2 | 5 |
| 2015 | 5 | 8 |
| 2016 | 6 | 5 |
| 2017 | 6 | 7 |
| 2018 | 11 | 17 |
| 2019 | 9 | 6 |
| 2020 | 17 | 10 |
| 2021 | 6 | 7 |
| 2022 | 7 | 3 |
| 2023 | 4 | 5 |
| 2024 | 5 | 7 |
| 2025 | 3 | 1 |
| 2026 | 2 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Systems and methods for synchronized valve actuation28 Jul 2026US 12,693,691 B2Swagelok Company
- Electrohydraulic actuating device having integrated electrical functional elements26 May 2026US 12,638,027 B2Emg Automation GmbH
- Reduced size fluid transfer and depressurization apparatus, control, and associated methods21 Oct 2025US 12,448,960 B2Tpe Midstream LLC
- Working machine9 Sep 2025US 12,410,578 B2Kubota Corporation
- Module for detecting the angular position of the drive shaft of a valve, valve and actuator provided with such module, and method of detecting the opening of a valve4 Feb 2025US 12,215,800 B2OMAL USA Corporation
- Fluid pressure cylinder2 Jul 2026US 2026/0185548 A1SMC Corporation
- Position detection sensor4 Jun 2026US 2026/0153361 A1Keyence Corporation
- Hydraulic cylinder12 Mar 2026US 2026/0071637 A1SMC Corporation
- Open and closed circuit parallel drive system and control method based on a four-chamber hydraulic cylinder19 Feb 2026US 2026/0049622 A1Taiyuan University of Technology
- Reduced size fluid transfer and depressurization apparatus, control, and associated methods15 Jan 2026US 2026/0016001 A1Tpe Midstream LLC
Most cited
By later US patents
- Piston position detector for fluid pressure cylinder59US 4,793,241 AC K D Kabushiki Kaisha · 1988
- Position indicator for a piston controlled robot part46US 5,201,838 A1993
- Proximity switch insensitive to interference fields31US 4,673,827 AGebhard Balluff Fabrik Feinmechanischer Erzenguisse GmbH & Co. · 1987
- Piston and cylinder device with fixed conductive guide on periphery of cylinder31US 5,103,172 AFesto AG & Co. · 1992
- Toggle clamping device or piston cylinder unit27US 6,220,588 B1Tunkers Maschinenbau GmbH · 2001