F16J 15/3488
Split-rings
Official title: {Split-rings}
F16J15/3488 (Split-rings) appears on 125 US grants and 91 published applications in this corpus.
Search patents in F16J- Granted patents
- 125
- Published applications
- 91
- Assignees
- 71
- Inventors
- 243
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 3 | 0 |
| 1985 | 0 | 0 |
| 1986 | 3 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 4 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 6 | 0 |
| 1997 | 2 | 0 |
| 1998 | 5 | 0 |
| 1999 | 4 | 0 |
| 2000 | 10 | 0 |
| 2001 | 4 | 1 |
| 2002 | 5 | 3 |
| 2003 | 3 | 2 |
| 2004 | 2 | 3 |
| 2005 | 0 | 3 |
| 2006 | 1 | 1 |
| 2007 | 0 | 4 |
| 2008 | 1 | 4 |
| 2009 | 1 | 1 |
| 2010 | 1 | 2 |
| 2011 | 2 | 2 |
| 2012 | 1 | 2 |
| 2013 | 1 | 2 |
| 2014 | 1 | 6 |
| 2015 | 2 | 2 |
| 2016 | 2 | 4 |
| 2017 | 4 | 3 |
| 2018 | 3 | 5 |
| 2019 | 5 | 8 |
| 2020 | 4 | 7 |
| 2021 | 7 | 3 |
| 2022 | 5 | 6 |
| 2023 | 4 | 6 |
| 2024 | 6 | 4 |
| 2025 | 6 | 4 |
| 2026 | 5 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Fluid end with clamped retention25 Aug 2026US 12,716,495 B2Kerr Machine Co.
- Sealing ring assemblies configured for pressure locking19 May 2026US 12,631,163 B2Mainspring Engergy, Inc.
- Internally clamping rectangular seal14 Apr 2026US 12,601,404 B2Konzelmann GmbH
- Piston seal ring bypass31 Mar 2026US 12,590,634 B2Rtx Corporation
- Mechanical seal assembly with improved support of axial forces24 Feb 2026US 12,560,240 B2Eagleburgmann Germany GmbH & Co.KG
- Sealing ring assembly for sealing a rotating shaft on extraction equipment16 Jul 2026US 2026/0201954 A1
- Seal ring16 Jul 2026US 2026/0201959 A1Nok Corporation
- Piston Seal Ring Bypass9 Jul 2026US 2026/0194140 A1Rtx Corporation
- Fluid end with clamped retention2 Oct 2025US 2025/0305585 A1Kerr Machine Co.
- Sealing ring assemblies configured for pressure locking7 Aug 2025US 2025/0250970 A1Mainspring Energy, Inc.
Most cited
By later US patents
- Seal for sealing an incompressible fluid between a relatively stationary seal and a movable member124US 5,558,341 AStein Seal Company · 1996
- Split mechanical face seal56US 4,576,384 AA. W. Chesterton Company · 1986
- Universal split mechanical seal40US 5,571,268 AA. W. Chesterton Company · 1996
- Antirotational and axial force component in a pusher seal assembly and tool for wear installation37US 5,370,401 AEG&G Sealol, Inc. · 1994
- Slurry pump double mechanical split face seal35US 4,410,188 A1983