F04B 53/104
The closure member being a rigid element oscillating around a fixed point
Official title: {the closure member being a rigid element oscillating around a fixed point}
F04B53/104 (The closure member being a rigid element oscillating around a fixed point) appears on 29 US grants and 25 published applications in this corpus.
Search patents in F04B- Granted patents
- 29
- Published applications
- 25
- Assignees
- 23
- Inventors
- 57
- Latest grant
- 1 Apr 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 1 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 2 |
| 2012 | 0 | 1 |
| 2013 | 0 | 0 |
| 2014 | 1 | 1 |
| 2015 | 1 | 2 |
| 2016 | 1 | 3 |
| 2017 | 0 | 2 |
| 2018 | 2 | 2 |
| 2019 | 5 | 2 |
| 2020 | 1 | 2 |
| 2021 | 2 | 1 |
| 2022 | 2 | 2 |
| 2023 | 0 | 0 |
| 2024 | 2 | 2 |
| 2025 | 1 | 1 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Flapper valve with common rotational direction1 Apr 2025US 12,264,668 B2Hamilton Sundstrand Corporation
- Reciprocating-type compressor for refrigeration and/or conditioning and/or heat pump system17 Sep 2024US 12,092,373 B2Officine Mario Dorin S.P.A.
- Flap valve for diaphragm pump20 Feb 2024US 11,905,944 B2Warren Rupp, Inc.
- Flap valve with improved retainer1 Nov 2022US 11,486,387 B2
- Check valve assembly5 Apr 2022US 11,293,558 B2Atlas Copco Airpower, Naamloze Vennootschap
- Pump for hvac&r system13 Aug 2026US 2026/0235114 A1Tyco Fire & Security GmbH
- Flapper valve with common rotational direction2 Jan 2025US 2025/0003403 A1Hamilton Sundstrand Corporation
- Shape Memory Alloy Capsule Micropump for Drug Delivery Applications11 Jul 2024US 2024/0229780 A9The American University in Cairo
- Shape Memory Alloy Capsule Micropump for Drug Delivery Applications25 Apr 2024US 2024/0133368 A1The American University in Cairo
- Air stop sheet of piston of cylinder27 Oct 2022US 2022/0341416 A1
Most cited
By later US patents
- Diaphragm pump103US 5,458,468 A1995
- Valve arrangement for a condiment dispensing system40US 5,622,484 ACarr-Griff, Inc. · 1997
- Check valve assembly26US 4,371,001 AFlow Industries, Inc. · 1983
- Pulsatile blood pump20US 4,360,324 ANikkiso Co., Ltd. · 1982
- Pump arrangement including flag type inlet valves with spherical seating12US 5,364,244 ACarr-Griff, Inc. · 1994