F04B 1/0443
Draining of the housing
Official title: Draining of the housing; Arrangements for handling leaked fluids
F04B1/0443 (Draining of the housing) appears on 39 US grants and 30 published applications in this corpus.
Search patents in F04B- Granted patents
- 39
- Published applications
- 30
- Assignees
- 31
- Inventors
- 103
- Latest grant
- 19 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 2 |
| 2003 | 1 | 0 |
| 2004 | 3 | 2 |
| 2005 | 0 | 2 |
| 2006 | 0 | 3 |
| 2007 | 2 | 0 |
| 2008 | 1 | 0 |
| 2009 | 0 | 1 |
| 2010 | 0 | 0 |
| 2011 | 1 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 1 |
| 2014 | 1 | 1 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 1 | 1 |
| 2018 | 0 | 4 |
| 2019 | 0 | 4 |
| 2020 | 5 | 3 |
| 2021 | 4 | 1 |
| 2022 | 1 | 1 |
| 2023 | 2 | 2 |
| 2024 | 1 | 1 |
| 2025 | 2 | 1 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method for determining malfunction of a liquid drainage pump and related control device and liquid drainage pump19 May 2026US 12,631,173 B2
- Linear FRAC pump drive system safety deflector15 Jul 2025US 12,359,660 B2SPM Oil & Gas Inc.
- Flushing circuit for a hydraulic machine4 Feb 2025US 12,215,678 B2Poclain Hydraulics Industrie
- Capacitive liquid leak detection device16 Apr 2024US 11,959,475 B2Haskel International, LLC
- Suction cover assembly for reciprocating pumps28 Nov 2023US 11,828,282 B2SPM Oil & Gas Inc.
- Method for determining malfunction of a liquid drainage pump and related control device and liquid drainage pump3 Jul 2025US 2025/0215873 A1
- Improved flushing circuit for a hydraulic machine25 Jul 2024US 2024/0247635 A1Poclain Hydraulics Industrie
- Linear frac pump drive system safety deflector11 May 2023US 2023/0142942 A1SPM Oil & Gas Inc.
- Capacitive liquid leak detection device23 Mar 2023US 2023/0093139 A1Haskel International, LLC
- Electro-hydrostatic actuation system20 Oct 2022US 2022/0333617 A1Moog Inc.
Most cited
By later US patents
- Suction cover assembly for reciprocating pumps34US 11,105,328 B2S,P.M. Flow Control, Inc. · 2021
- Ring dampener for rotary fluid pressure device11US 4,091,717 AEaton Corporation · 1978
- Pump assembly for a slip-controlled hydraulic brake system for a vehicle10US 6,389,955 B1Robert Bosch GmbH · 2002
- Fuel pump9US 5,967,123 ARobert Bosch GmbH · 1999
- Radial piston pump for high pressure fuel delivery7US 6,139,284 ARobert Bosch GmbH · 2000