F04B 9/125
Reciprocating movement of the pumping member being obtained by a double-acting elastic-fluid
Official title: reciprocating movement of the pumping member being obtained by a double-acting elastic-fluid motor
F04B9/125 (Reciprocating movement of the pumping member being obtained by a double-acting elastic-fluid) appears on 122 US grants and 79 published applications in this corpus.
Search patents in F04B- Granted patents
- 122
- Published applications
- 79
- Assignees
- 83
- Inventors
- 200
- Latest grant
- 14 Jan 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 1 | 0 |
| 1978 | 4 | 0 |
| 1979 | 2 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 3 | 0 |
| 1992 | 6 | 0 |
| 1993 | 2 | 0 |
| 1994 | 3 | 0 |
| 1995 | 2 | 0 |
| 1996 | 2 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 4 | 0 |
| 2000 | 5 | 0 |
| 2001 | 6 | 0 |
| 2002 | 3 | 3 |
| 2003 | 2 | 7 |
| 2004 | 5 | 3 |
| 2005 | 1 | 2 |
| 2006 | 1 | 1 |
| 2007 | 1 | 1 |
| 2008 | 2 | 7 |
| 2009 | 0 | 2 |
| 2010 | 1 | 1 |
| 2011 | 2 | 1 |
| 2012 | 1 | 3 |
| 2013 | 1 | 5 |
| 2014 | 4 | 6 |
| 2015 | 1 | 5 |
| 2016 | 4 | 7 |
| 2017 | 5 | 5 |
| 2018 | 2 | 3 |
| 2019 | 6 | 4 |
| 2020 | 7 | 3 |
| 2021 | 2 | 3 |
| 2022 | 3 | 4 |
| 2023 | 4 | 0 |
| 2024 | 3 | 1 |
| 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
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- Centrifugal compressor with piston intensifier17 Oct 2023US 11,788,521 B2Southwest Research Institute
- Piston pump with quick exhaust slide valves2 Apr 2026US 2026/0092600 A1Samoa Industrial S.A.
- Pneumatic automatic reversing transfer pump30 Jan 2025US 2025/0035095 A1
- Rotary valve for use with a fluid proportioner15 Feb 2024US 2024/0052946 A1
- Vessel pressure testing system22 Sep 2022US 2022/0299022 A1Graco Minnesota Inc.
- Compressed air driven motor7 Jul 2022US 2022/0213789 A1Graco Minnesota Inc.
Most cited
By later US patents
- Bellows-type pump and metering system73US 4,483,665 ATritec Industries, Inc. · 1984
- Well head gas counter balanced and operated actuator for oil well pumps43US 3,986,355 A1976
- Continuously operating piston pump39US 3,999,896 A1976
- High pressure gas compressor38US 5,807,083 A1998
- Dispensing system for low stability fluids36US 4,116,364 ABinks Manufacturing Company · 1978