F04B 53/1005
Being formed by two closure members working in series
Official title: {being formed by two closure members working in series}
F04B53/1005 (Being formed by two closure members working in series) appears on 32 US grants and 25 published applications in this corpus.
Search patents in F04B- Granted patents
- 32
- Published applications
- 25
- Assignees
- 23
- Inventors
- 64
- Latest grant
- 21 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 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 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 1 |
| 2014 | 1 | 3 |
| 2015 | 2 | 3 |
| 2016 | 0 | 0 |
| 2017 | 0 | 1 |
| 2018 | 3 | 1 |
| 2019 | 1 | 3 |
| 2020 | 2 | 2 |
| 2021 | 2 | 2 |
| 2022 | 2 | 1 |
| 2023 | 3 | 2 |
| 2024 | 1 | 3 |
| 2025 | 3 | 2 |
| 2026 | 3 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Hydraulic fluid release valve assemblies21 Apr 2026US 12,607,271 B2Roadtek Enterprises Inc.
- Diaphragm pump24 Feb 2026US 12,560,158 B2Blue-White Industries, Ltd.
- Vacuum pump10 Feb 2026US 12,546,300 B2Milwaukee Electric Tool Corporation
- Mounting structure for diaphragm and retainer11 Nov 2025US 12,467,452 B2Iwaki Co., Ltd.
- Check valve for RAT restow pump21 Oct 2025US 12,449,049 B2Hamilton Sundstrand Corporation
- Hydraulic fluid release valve assemblies25 Sep 2025US 2025/0297688 A1Rubicon Inc.
- Mounting structure for diaphragm and retainer15 May 2025US 2025/0154947 A1Iwaki Co., Ltd.
- Diaphragm pump28 Nov 2024US 2024/0392770 A1Blue-White Industries, Ltd.
- Check valve for rat restow pump29 Aug 2024US 2024/0287951 A1Hamilton Sundstrand Corporation
- Hydraulic pumping system8 Feb 2024US 2024/0044326 A1
Most cited
By later US patents
- Standing valve with a curved fin49US 6,283,148 B1Flowmore Systems, Inc. · 2001
- Tube pump with flexible tube diaphragm42US 6,302,660 B1Iwaki Co., Ltd. · 2001
- Dual-piston reciprocating pump assembly18US 4,173,437 AThe Perkin-Elmer Corporation · 1979
- Dual-piston reciprocating pump assembly18US 4,453,898 AThe Perkin-Elmer Corporation · 1984
- Pump control systems16US 3,958,898 AWaters Associates, Inc. · 1976