F16J 15/184
Tightening mechanisms
Official title: {Tightening mechanisms}
F16J15/184 (Tightening mechanisms) appears on 208 US grants and 153 published applications in this corpus.
Search patents in F16J- Granted patents
- 208
- Published applications
- 153
- Assignees
- 145
- Inventors
- 374
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 4 | 0 |
| 1978 | 3 | 0 |
| 1979 | 0 | 0 |
| 1980 | 3 | 0 |
| 1981 | 7 | 0 |
| 1982 | 4 | 0 |
| 1983 | 3 | 0 |
| 1984 | 3 | 0 |
| 1985 | 2 | 0 |
| 1986 | 4 | 0 |
| 1987 | 4 | 0 |
| 1988 | 5 | 0 |
| 1989 | 4 | 0 |
| 1990 | 4 | 0 |
| 1991 | 3 | 0 |
| 1992 | 5 | 0 |
| 1993 | 6 | 0 |
| 1994 | 6 | 0 |
| 1995 | 1 | 0 |
| 1996 | 4 | 0 |
| 1997 | 1 | 0 |
| 1998 | 4 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 4 | 2 |
| 2002 | 4 | 1 |
| 2003 | 4 | 5 |
| 2004 | 1 | 1 |
| 2005 | 0 | 6 |
| 2006 | 3 | 1 |
| 2007 | 1 | 4 |
| 2008 | 0 | 3 |
| 2009 | 3 | 1 |
| 2010 | 1 | 6 |
| 2011 | 1 | 0 |
| 2012 | 1 | 6 |
| 2013 | 5 | 5 |
| 2014 | 5 | 7 |
| 2015 | 4 | 7 |
| 2016 | 8 | 3 |
| 2017 | 5 | 5 |
| 2018 | 0 | 7 |
| 2019 | 8 | 8 |
| 2020 | 4 | 14 |
| 2021 | 9 | 4 |
| 2022 | 7 | 12 |
| 2023 | 14 | 7 |
| 2024 | 9 | 15 |
| 2025 | 14 | 15 |
| 2026 | 5 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Fluid end with clamped retention25 Aug 2026US 12,716,495 B2Kerr Machine Co.
- Packing system of a valve assembly25 Aug 2026US 12,716,521 B2Fisher Controls International LLC
- Fluid end assembly18 Aug 2026US 12,710,039 B2Kerr Machine Co.
- Cartridge sealing device with semi-solid mud filler and configured to be mounted to fluid equipment26 May 2026US 12,638,083 B2AIGI Environmental Inc.
- Solid plate and stuffing box comprising the solid plate7 Apr 2026US 12,595,848 B2Haarslev Industries A/S
- Adjustable seal system for a reciprocating pump1 Oct 2026US 2026/0298225 A1Gd Energy Products, LLC
- A valve with a spring30 Jul 2026US 2026/0218811 A1Valmet Flow Control Oy
- System and method for automatically sensing a position of a packing loading assembly with a position sensor28 May 2026US 2026/0146671 A1A. W. Chesterton Company
- Bi-directional compression loaded mechanical packing sealing assembly30 Apr 2026US 2026/0117870 A1A.W.Chestertoncompany
- Pressure balanced self-regulating mechanical packing sealing assembly30 Apr 2026US 2026/0117872 A1A. W. Chesterton Company
Most cited
By later US patents
- Rotary shaft seal82US 4,484,753 ANL Industries, Inc. · 1984
- Valve stem packing structure79US 5,056,758 A1991
- Zero clearance anti-extrusion rings for containment of PTFE packing77US 5,131,666 AFisher Controls International LLC · 1992
- Live load packing system62US 5,230,498 AFisher Controls International LLC · 1993
- Annular seal60US 4,131,287 AExxon Production Research Company · 1978