F15B 21/125
By means of a rotating valve
Official title: {by means of a rotating valve}
F15B21/125 (By means of a rotating valve) appears on 16 US grants and 3 published applications in this corpus.
Search patents in F15B- Granted patents
- 16
- Published applications
- 3
- Assignees
- 13
- Inventors
- 28
- Latest grant
- 11 May 2021
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 0 |
| 2007 | 1 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 1 | 1 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 1 | 1 |
| 2020 | 0 | 0 |
| 2021 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Pressure wave generator with dynamic reflector of pressure impulse11 May 2021US 11,002,299 B1ABI Energy Ltd. Israel
- Method of profiling openings of elements of mechanical system for generating optimal pressure waves in elastic fluids19 Mar 2019US 10,233,952 B1
- Fluid pressure pulse generating apparatus and method of using same27 Dec 2016US 9,528,371 B2Evolution Engineering Inc.
- Pulsating vibration air generation apparatus3 Jul 2007US 7,237,571 B2Kabushikikaisha Matsui Seisakusho
- Percussive tool13 Aug 2002US 6,431,294 B1Andergauge Limited
- Method of profiling openings of elements of mechanical system for generating optimal pressure waves in elastic fluids21 Mar 2019US 2019/0085880 A1
- Fluid pressure pulse generating apparatus and method of using same14 Jan 2016US 2016/0010449 A1Evolution Engineering Inc.
- Pulsating vibration air generation apparatus14 Apr 2005US 2005/0076776 A1Kabushikikaisha Matsui Seisakusho
Most cited
By later US patents
- Low inertia servo valve31US 5,467,800 AAtlas Fluid Controls Inc. · 1995
- Percussive tool28US 6,431,294 B1Andergauge Limited · 2002
- Electrohydraulically operated portable power tool27US 3,995,703 ARobert Bosch GmbH · 1976
- Sound wave operated energy corverter for producing different forms of movement22US 5,317,876 AAisin Seiki Kabushiki Kaisha · 1994
- Impulse signal producing device of the pneumatic pressure type20US 3,937,252 AMikuni Kogyo Kabushiki Kaisha · 1976