F16K 17/04
Spring-loaded
Official title: spring-loaded
F16K17/04 (Spring-loaded) appears on 2,196 US grants and 1,819 published applications in this corpus.
Search patents in F16K- Granted patents
- 2,196
- Published applications
- 1,819
- Assignees
- 1,265
- Inventors
- 4,048
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 18 | 0 |
| 1977 | 21 | 0 |
| 1978 | 28 | 0 |
| 1979 | 21 | 0 |
| 1980 | 32 | 0 |
| 1981 | 36 | 0 |
| 1982 | 23 | 0 |
| 1983 | 20 | 0 |
| 1984 | 31 | 0 |
| 1985 | 27 | 0 |
| 1986 | 22 | 0 |
| 1987 | 27 | 0 |
| 1988 | 32 | 0 |
| 1989 | 39 | 0 |
| 1990 | 25 | 0 |
| 1991 | 30 | 0 |
| 1992 | 19 | 0 |
| 1993 | 32 | 0 |
| 1994 | 29 | 0 |
| 1995 | 23 | 0 |
| 1996 | 27 | 0 |
| 1997 | 37 | 0 |
| 1998 | 34 | 0 |
| 1999 | 35 | 0 |
| 2000 | 28 | 0 |
| 2001 | 28 | 8 |
| 2002 | 18 | 27 |
| 2003 | 24 | 41 |
| 2004 | 34 | 47 |
| 2005 | 26 | 36 |
| 2006 | 29 | 40 |
| 2007 | 26 | 30 |
| 2008 | 21 | 37 |
| 2009 | 18 | 32 |
| 2010 | 15 | 49 |
| 2011 | 25 | 50 |
| 2012 | 33 | 53 |
| 2013 | 31 | 59 |
| 2014 | 43 | 82 |
| 2015 | 66 | 84 |
| 2016 | 89 | 89 |
| 2017 | 74 | 114 |
| 2018 | 76 | 116 |
| 2019 | 122 | 135 |
| 2020 | 130 | 141 |
| 2021 | 113 | 105 |
| 2022 | 101 | 100 |
| 2023 | 119 | 121 |
| 2024 | 102 | 89 |
| 2025 | 77 | 73 |
| 2026 | 60 | 61 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- F16K 17/06With special arrangements for adjusting the opening pressure349
- F16K 17/10With auxiliary valve for fluid operation of the main valve332
- F16K 17/048Combined with other safety valves, or with pressure control devices229
- F16K 17/0446With an obturating member having at least a component of their opening219
- F16K 17/0406In the form of balls180
- F16K 17/0413In the form of closure plates174
- F16K 17/0433With vibration preventing means165
- F16K 17/08With special arrangements for providing a large discharge passage143
All 15 subgroupsShow fewer
- F16K 17/044With more than one spring138
- F16K 17/0473Multiple-way safety valves110
- F16K 17/0466With a special seating surface106
- F16K 17/0493With a spring other than a helicoidal spring93
- F16K 17/042With locking or disconnecting arrangements72
- F16K 17/0486With mechanical actuating means60
- F16K 17/0426With seat protecting means30
Recent patents
- Battery pack including valve structure having valve member biased toward inner surface of pack case by biasing member29 Sep 2026US 12,749,762 B2Prime Planet Energy & Solutions, Inc.
- Valve seat assemblies for relief valves22 Sep 2026US 12,742,507 B2Emerson Automation Solutions Final Control US LP
- Crusher for mineral materials or recycled materials15 Sep 2026US 12,734,527 B2Kleemann GmbH
- Water flow regulation15 Sep 2026US 12,736,147 B2Active Energy Inc.
- Additively manufactured hydraulic valve components8 Sep 2026US 12,729,772 B2Caterpillar Inc.
- Overpressure safety valve8 Oct 2026US 2026/0309246 A1LESER GmbH & Co. KG
- Malfunction prevention valve and nuclear equipment comprising same24 Sep 2026US 2026/0290634 A1Korea Atomic Energy Research Institute
- Inflatable Systems with Electro-Pneumatic Valve Modules17 Sep 2026US 2026/0276102 A1Goodrich Corporation
- Valves and control systems for clean fluid pressure equalization and de-energization10 Sep 2026US 2026/0266387 A1E3 LLC
- Valve assemblies for transmissions and methods and kits for reworking valve assemblies for transmissions3 Sep 2026US 2026/0258877 A1Sonnax Transmission Company
Most cited
By later US patents
- Hot water disinfection of dialysis machines, including the extracorporeal circuit thereof490US 5,591,344 AAksys, Ltd. · 1997
- Hemodialysis machine with automatic priming by induced pressure pulses251US 5,863,421 AAksys, Ltd. · 1999
- Method of rinsing back blood to hemodialysis patient243US 5,690,831 AAksys, Ltd. · 1997
- Method and system for including robots into social networks220US 8,321,364 B1Google Inc. · 2012
- Over pressure relief system for fluid ends217US 10,082,137 B2Caterpillar Inc. · 2018