F04B 7/0088
Sealing arrangements between the distribution members and the housing
Official title: {Sealing arrangements between the distribution members and the housing}
F04B7/0088 (Sealing arrangements between the distribution members and the housing) appears on 65 US grants and 48 published applications in this corpus.
Search patents in F04B- Granted patents
- 65
- Published applications
- 48
- Assignees
- 32
- Inventors
- 79
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 2 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 3 | 0 |
| 1985 | 0 | 0 |
| 1986 | 3 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 3 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 0 |
| 2004 | 1 | 1 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 1 |
| 2013 | 0 | 0 |
| 2014 | 0 | 2 |
| 2015 | 0 | 1 |
| 2016 | 2 | 3 |
| 2017 | 0 | 1 |
| 2018 | 3 | 3 |
| 2019 | 0 | 4 |
| 2020 | 2 | 3 |
| 2021 | 3 | 2 |
| 2022 | 3 | 5 |
| 2023 | 5 | 6 |
| 2024 | 8 | 5 |
| 2025 | 9 | 9 |
| 2026 | 6 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Through-hardened valve seat for hydraulic fracturing1 Sep 2026US 12,723,662 B2Apex Industrial LLC
- Fluid end assembly18 Aug 2026US 12,710,039 B2Kerr Machine Co.
- Fluid end12 May 2026US 12,624,684 B2Kerr Machine Co.
- Fluid end with threaded dynamic section21 Apr 2026US 12,607,185 B2Kerr Machine Co.
- High pressure pump31 Mar 2026US 12,590,575 B2Kerr Machine Co.
- Through-Hardened Valve Seat for Hydraulic Fracturing1 Oct 2026US 2026/0298349 A1Apex Industrial LLC
- Fluid routing plug16 Apr 2026US 2026/0104039 A1Kerr Machine Co.
- Fluid end with threaded dynamic section20 Nov 2025US 2025/0354547 A1Kerr Machine Co.
- Fluid routing plug11 Sep 2025US 2025/0283454 A1Kerr Machine Co.
- Fluid end assembly11 Sep 2025US 2025/0283465 A1Kerr Machine Co.
Most cited
By later US patents
- Double-cylinder pump especially for conveying cement28US 4,178,142 AFriedrich Wilh. Schwing GmbH · 1979
- Positive double-piston displacement pump conveying pasteous material16US 4,653,990 A1987
- Automatic wear compensation apparatus for concrete pumping hopper apparatus15US 4,198,193 A1980
- Twin-cylinder pump, in particular for pumping thick liquids13US 4,382,752 A1983
- Pumping system with air conveyance and method13US 4,659,293 ALefco Western, Inc. · 1987