F04D 9/041
The priming pump having evacuating action
Official title: {the priming pump having evacuating action (F04D9/043 and F04D9/06 take precedence)}
F04D9/041 (The priming pump having evacuating action) appears on 64 US grants and 46 published applications in this corpus.
Search patents in F04D- Granted patents
- 64
- Published applications
- 46
- Assignees
- 54
- Inventors
- 115
- Latest grant
- 12 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 3 | 0 |
| 1987 | 0 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 3 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 1 |
| 2002 | 2 | 3 |
| 2003 | 2 | 1 |
| 2004 | 2 | 2 |
| 2005 | 1 | 2 |
| 2006 | 1 | 1 |
| 2007 | 1 | 0 |
| 2008 | 0 | 2 |
| 2009 | 0 | 0 |
| 2010 | 1 | 1 |
| 2011 | 0 | 3 |
| 2012 | 3 | 2 |
| 2013 | 0 | 4 |
| 2014 | 2 | 0 |
| 2015 | 3 | 1 |
| 2016 | 0 | 3 |
| 2017 | 1 | 1 |
| 2018 | 0 | 2 |
| 2019 | 3 | 1 |
| 2020 | 4 | 1 |
| 2021 | 1 | 2 |
| 2022 | 1 | 4 |
| 2023 | 4 | 3 |
| 2024 | 2 | 3 |
| 2025 | 3 | 1 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Float box with valve12 May 2026US 12,624,697 B2B.B.A. Participaties B.V.
- Vacuum priming system for close-coupled pumps7 Oct 2025US 12,435,722 B2Cornell Pump Company
- Sealing ring gland and fuel pump including the same22 Apr 2025US 12,281,629 B2Phinia Jersey Holdings LLC
- Smart vacuum priming system8 Apr 2025US 12,270,421 B2Cornell Pump Company
- Sealing soft water recovery apparatus for vacuum pump in vacuum pressure swing adsorption oxygen generation system26 Nov 2024US 12,152,585 B1Shanghai Lifengas Co., Ltd
- Liquid transfer pump30 Jul 2026US 2026/0218708 A1Zhejiang Ele Smart Technology Co., Ltd.
- Float box with valve12 Feb 2026US 2026/0043405 A1B.B.A. Participaties B.V.
- Aeronautical thruster19 Jun 2025US 2025/0197014 A1Safran Aircraft Engines
- Sealing soft water recovery apparatus for vacuum pump in vacuum pressure swing adsorption oxygen generation system28 Nov 2024US 2024/0392786 A1Shanghai Lifengas Co., Ltd
- Smart vacuum priming system22 Aug 2024US 2024/0280107 A1Cornell Pump Company
Most cited
By later US patents
- Wet-dry vacuum apparatus with pump means for discharging liquid therefrom61US 4,080,104 A1978
- Sewage pump priming system28US 4,067,663 AThe Chemithon Corporation · 1978
- Combined fluidizing and vacuum pump27US 4,776,758 AKamyr, Inc. · 1988
- Vacuum priming system for centrifugal pumps27US 5,536,147 APaco Pumps, Inc. · 1996
- Centrifugal pump with starting stage24US 5,456,574 AUnited Technologies Corporation · 1995