F04B 9/1053
One side of the double-acting liquid motor being always under the influence
Official title: {one side of the double-acting liquid motor being always under the influence of the liquid under pressure}
F04B9/1053 (One side of the double-acting liquid motor being always under the influence) appears on 34 US grants and 20 published applications in this corpus.
Search patents in F04B- Granted patents
- 34
- Published applications
- 20
- Assignees
- 26
- Inventors
- 55
- Latest grant
- 14 Jan 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 3 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 2 | 1 |
| 2003 | 1 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 1 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 1 | 1 |
| 2014 | 1 | 4 |
| 2015 | 1 | 4 |
| 2016 | 2 | 0 |
| 2017 | 0 | 1 |
| 2018 | 1 | 3 |
| 2019 | 3 | 0 |
| 2020 | 1 | 1 |
| 2021 | 1 | 1 |
| 2022 | 1 | 1 |
| 2023 | 1 | 0 |
| 2024 | 1 | 0 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Hydraulic pressure amplifier14 Jan 2025US 12,196,201 B2Poclain Hydraulics Industrie
- Apparatus for conveying thick matter16 Apr 2024US 11,959,468 B2Putzmeister Engineering GmbH
- Pump device24 Oct 2023US 11,795,927 B2OBS Technology AS
- Hydraulic system for high speed reciprocating cylinders8 Mar 2022US 11,268,501 B1Hydraquip, Inc.
- Method and apparatus for pumping fluid24 Aug 2021US 11,098,709 B2Fluidstream Energy Inc.
- Pump device9 Jun 2022US 2022/0178357 A1OBS Technology AS
- Apparatus for Conveying Thick Matter5 Aug 2021US 2021/0239103 A1Putzmeister Engineering GmbH
- Hydraulic pressure amplifier22 Oct 2020US 2020/0332781 A1Poclain Hydraulics Industrie
- Ultrahigh pressure generator31 May 2018US 2018/0149145 A1Sugino Machine Limited
- Methods and systems for pressurizing harsh fluids1 Feb 2018US 2018/0030968 A1Schlumberger Technology Corporation
Most cited
By later US patents
- Liquid injection apparatus having an external adjustor20US 4,809,731 A1989
- Direct action fluid motor and injection pump18US 5,513,963 AFrank and Robyn Walton 1990 Family Trust · 1996
- Compression spring fluid motor17US 5,137,435 AFrank and Robyn Walton 1990 Family Trust · 1992
- Fluid pressure ratio transformer system15US 4,488,853 ANew Process Industries, Inc. · 1984
- Hydraulically actuated pump assembly14US 4,118,154 A1978