F15B 13/01
Locking-valves or other detent i.e. load-holding devices
Official title: Locking-valves or other detent {i.e. load-holding} devices
F15B13/01 (Locking-valves or other detent i.e. load-holding devices) appears on 325 US grants and 168 published applications in this corpus.
Search patents in F15B- Granted patents
- 325
- Published applications
- 168
- Assignees
- 179
- Inventors
- 506
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 9 | 0 |
| 1977 | 5 | 0 |
| 1978 | 8 | 0 |
| 1979 | 7 | 0 |
| 1980 | 9 | 0 |
| 1981 | 8 | 0 |
| 1982 | 8 | 0 |
| 1983 | 2 | 0 |
| 1984 | 6 | 0 |
| 1985 | 3 | 0 |
| 1986 | 6 | 0 |
| 1987 | 8 | 0 |
| 1988 | 7 | 0 |
| 1989 | 4 | 0 |
| 1990 | 4 | 0 |
| 1991 | 4 | 0 |
| 1992 | 7 | 0 |
| 1993 | 4 | 0 |
| 1994 | 6 | 0 |
| 1995 | 3 | 0 |
| 1996 | 4 | 0 |
| 1997 | 4 | 0 |
| 1998 | 7 | 0 |
| 1999 | 11 | 0 |
| 2000 | 13 | 0 |
| 2001 | 13 | 1 |
| 2002 | 9 | 7 |
| 2003 | 5 | 6 |
| 2004 | 6 | 7 |
| 2005 | 6 | 2 |
| 2006 | 3 | 9 |
| 2007 | 5 | 0 |
| 2008 | 2 | 5 |
| 2009 | 1 | 7 |
| 2010 | 2 | 3 |
| 2011 | 5 | 5 |
| 2012 | 4 | 4 |
| 2013 | 2 | 7 |
| 2014 | 7 | 2 |
| 2015 | 3 | 15 |
| 2016 | 9 | 9 |
| 2017 | 7 | 10 |
| 2018 | 7 | 9 |
| 2019 | 15 | 11 |
| 2020 | 16 | 10 |
| 2021 | 8 | 13 |
| 2022 | 9 | 6 |
| 2023 | 6 | 5 |
| 2024 | 9 | 8 |
| 2025 | 6 | 4 |
| 2026 | 3 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Jack with hydraulic lock6 Oct 2026US 12,753,053 B2Pacific Rim International, LLC
- Hydraulic control system and method with electro-proportional pressure valve and integral check5 May 2026US 12,618,424 B2HydraForce, Inc.
- Fluid pressure control device3 Mar 2026US 12,565,903 B2KYB Corporation
- Movement control valve9 Dec 2025US 12,492,752 B2Valvole Italia S.R.L.
- Hydraulic system, excavator, and control method of excavator14 Oct 2025US 12,442,160 B2Komatsu Ltd.
- Hydraulic actuator6 Aug 2026US 2026/0226922 A1Svm Schultz Verwaltungs-GmbH & Co.KG
- Crane upper and lower structure interlocking system, and crane9 Jul 2026US 2026/0193063 A1Xuzhou Heavy Machinery Co., Ltd.
- Valve Assembly for Double-Acting Hoisting Mechanism29 Jan 2026US 2026/0029001 A1Robert Bosch GmbH
- Hydraulic jack assemblies25 Sep 2025US 2025/0296823 A1Roadtek Enterprises Inc.
- Hydraulic system, excavator, and control method of excavator18 Sep 2025US 2025/0290287 A1Komatsu Ltd.
Most cited
By later US patents
- Control valve93US 4,287,812 AShoketsu Kinzoku Kogyo Kabushiki Kaisha · 1981
- Pneumatic locking valve with manual override93US 4,838,306 AAladdin Engineering & Mfg., Inc. · 1989
- Check valve83US 3,981,479 ASnap-Tite, Inc. · 1976
- Balanced pilot operated check valve61US 8,262,058 B22012
- Integral hydraulic blocking and relief valve53US 4,461,449 AThe Boeing Company · 1984