F01L 25/063
The auxiliary valve being actuated by the working motor-piston or piston-rod
Official title: {the auxiliary valve being actuated by the working motor-piston or piston-rod}
F01L25/063 (The auxiliary valve being actuated by the working motor-piston or piston-rod) appears on 77 US grants and 9 published applications in this corpus.
Search patents in F01L- Granted patents
- 77
- Published applications
- 9
- Assignees
- 47
- Inventors
- 112
- Latest grant
- 5 Sep 2023
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 9 | 0 |
| 1977 | 8 | 0 |
| 1978 | 4 | 0 |
| 1979 | 1 | 0 |
| 1980 | 3 | 0 |
| 1981 | 3 | 0 |
| 1982 | 2 | 0 |
| 1983 | 3 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 3 | 0 |
| 1987 | 2 | 0 |
| 1988 | 2 | 0 |
| 1989 | 5 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 4 | 0 |
| 1994 | 4 | 0 |
| 1995 | 4 | 0 |
| 1996 | 2 | 0 |
| 1997 | 3 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 1 | 1 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 2 |
| 2009 | 1 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 1 | 2 |
| 2015 | 0 | 0 |
| 2016 | 1 | 0 |
| 2017 | 1 | 1 |
| 2018 | 1 | 1 |
| 2019 | 0 | 0 |
| 2020 | 1 | 0 |
| 2021 | 0 | 1 |
| 2022 | 0 | 1 |
| 2023 | 2 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
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- Capstan-driven air pump system for opening and closing a longitudinal railcar door16 May 2023US 11,649,744 B2Trinity Rail Group, LLC
- Pressure amplifier15 Sep 2020US 10,774,847 B2Pistonpower Aps
- Engine block and a process for hybrid ignition of an engine2 Oct 2018US 10,087,818 B2
- Method to prevent debris build-up on reciprocating air motor pilot valves10 Jan 2017US 9,540,971 B2Graco Minnesota Inc.
- Actuator valve of an air operated double diaphragm pump20 Oct 2022US 2022/0333592 A1Teryair Equipment Pvt. Ltd.
- Capstan-driven air pump system for opening and closing a longitudinal railcar door29 Apr 2021US 2021/0123362 A1TrinityRail Products and Services, LLC
- Pressure amplifier6 Sep 2018US 2018/0252206 A1Pistonpower Aps
- An engine block and a process for hybrid ignition of an engine20 Apr 2017US 2017/0107894 A1
- Compact linear actuator3 Apr 2014US 2014/0090552 A1
Most cited
By later US patents
- Reciprocating infusion pump and directional adapter set for use therewith80US 4,065,230 AHart Associates, Inc. · 1977
- Mechanical shift, pneumatic assist pilot valve for diaphragm pump64US 4,854,832 AThe Aro Corporation · 1989
- Compressed air driven double diaphragm pump63US 4,406,596 A1983
- Double-acting, fluid-operated pump having pilot valve control of distributor motor55US 4,123,204 AScholle Corporation · 1978
- Pump having fluid-actuated motor controlled by fluid-actuated distributor50US 4,104,008 ASchmidt Kranz & Co. · 1978