F01L 25/066
Piston or piston-rod being used as auxiliary valve
Official title: {piston or piston-rod being used as auxiliary valve}
F01L25/066 (Piston or piston-rod being used as auxiliary valve) appears on 59 US grants and 5 published applications in this corpus.
Search patents in F01L- Granted patents
- 59
- Published applications
- 5
- Assignees
- 33
- Inventors
- 80
- Latest grant
- 14 Jun 2022
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 8 | 0 |
| 1978 | 10 | 0 |
| 1979 | 2 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 3 | 0 |
| 1983 | 2 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 2 | 0 |
| 1987 | 3 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 3 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 4 | 0 |
| 1997 | 4 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 1 |
| 2002 | 1 | 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 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 1 |
| 2015 | 0 | 0 |
| 2016 | 1 | 0 |
| 2017 | 0 | 1 |
| 2018 | 1 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 2 |
| 2021 | 0 | 0 |
| 2022 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Hydraulic fluid pump and retainer assembly for same14 Jun 2022US 11,359,739 B2Gd Energy Products, LLC
- Engine block and a process for hybrid ignition of an engine2 Oct 2018US 10,087,818 B2
- Compact linear actuator22 Mar 2016US 9,291,161 B2
- Reversing valve for a compressed air membrane pump7 May 2002US 6,382,934 B2ALMATEC Maschinenbau GmbH
- Pressure medium driven device performing linear motion4 Nov 1997US 5,683,230 A
- Hydraulic fluid pump and retainer assembly for same12 Mar 2020US 2020/0080660 A1Gardner Denver Petroleum Pumps, LLC
- Hydraulic fluid pump and retainer assembly for same12 Mar 2020US 2020/0080661 A1Gardner Denver Petroleum Pumps, LLC
- 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
- Reversing valve for a compressed air membrane pump23 Aug 2001US 2001/0016169 A1ALMATEC Maschinenbau GmbH
Most cited
By later US patents
- Reciprocating infusion pump and directional adapter set for use therewith80US 4,065,230 AHart Associates, Inc. · 1977
- Fluid driven recipricating apparatus66US 5,616,005 AThe Regents of the University of California · 1997
- Pneumatically shifted reciprocating pump50US 5,558,506 A1996
- Air driven pump32US 3,963,383 AHaskel Engineering & Supply Company · 1976
- Pump fluid motor carrying spool valve for distributor valve actuation29US 4,042,311 AAioi Seiki Kabushiki Kaisha · 1977