F04B 39/044
Sealing with a rolling diaphragm between piston and cylinder
Official title: {sealing with a rolling diaphragm between piston and cylinder}
F04B39/044 (Sealing with a rolling diaphragm between piston and cylinder) appears on 14 US grants and 5 published applications in this corpus.
Search patents in F04B- Granted patents
- 14
- Published applications
- 5
- Assignees
- 9
- Inventors
- 16
- Latest grant
- 26 Apr 2022
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 3 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 1 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 1 | 1 |
| 2017 | 0 | 2 |
| 2018 | 0 | 0 |
| 2019 | 1 | 0 |
| 2020 | 2 | 0 |
| 2021 | 0 | 1 |
| 2022 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Rolling diaphragm pump26 Apr 2022US 11,313,361 B2Nippon Pillar Packing Co., Ltd.
- Diaphragm pump with a rail to restrict rotation and a piston cavity to engage with a guiding member at the end of the suction stroke10 Nov 2020US 10,830,226 B2Nippon Pillar Packing Co., Ltd.
- Vibration-dampening air compressor assembly9 Jun 2020US 10,677,233 B2Scott Technologies, Inc.
- Linear compressor6 Aug 2019US 10,371,131 B2LG Electronics Inc.
- Rocking piston type compressor9 Feb 2016US 9,255,477 B2Max Co., Ltd.
- Rolling diaphragm pump29 Apr 2021US 2021/0123429 A1Nippon Pillar Packing Co., Ltd.
- Vibration-dampening air compressor assembly19 Oct 2017US 2017/0298918 A1Scott Technologies, Inc.
- Linear compressor5 Jan 2017US 2017/0002801 A1LG Electronics Inc.
- Diaphragm pump22 Sep 2016US 2016/0273527 A1Nippon Pillar Packing Co., Ltd.
- Rocking piston type compressor17 Nov 2011US 2011/0277626 A1Max Co., Ltd.
Most cited
By later US patents
- Diaphragm pump with at least two diaphragms104US 5,554,014 AKNF Neuberger GmbH · 1996
- Double-acting diaphragm pump and reversing mechanism therefor43US 4,682,937 AThe Coca-Cola Company · 1987
- Self contained pump and reversing mechanism therefor19US 4,436,493 AThe Coca-Cola Company · 1984
- Engine driven vacuum pump12US 4,156,416 AGeneral Motors Corporation · 1979
- Double acting diaphragm pump and reversing mechanism therefor11US 4,634,350 AThe Coca-Cola Company · 1987