F04B 1/0474
With two or more serially arranged radial piston-cylinder units
Official title: with two or more serially arranged radial piston-cylinder units
F04B1/0474 (With two or more serially arranged radial piston-cylinder units) appears on 20 US grants and 32 published applications in this corpus.
Search patents in F04B- Granted patents
- 20
- Published applications
- 32
- Assignees
- 16
- Inventors
- 53
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 2 |
| 2012 | 0 | 2 |
| 2013 | 1 | 0 |
| 2014 | 1 | 1 |
| 2015 | 2 | 0 |
| 2016 | 1 | 2 |
| 2017 | 0 | 0 |
| 2018 | 1 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 1 |
| 2022 | 0 | 3 |
| 2023 | 2 | 3 |
| 2024 | 1 | 9 |
| 2025 | 7 | 7 |
| 2026 | 3 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Fluid end with clamped retention25 Aug 2026US 12,716,495 B2Kerr Machine Co.
- Positive displacement pump2 Jun 2026US 12,644,440 B2Binks US, LLC
- Radial piston pumps3 Mar 2026US 12,565,878 B2Domin Fluid Power Limited
- Brake mechanism for a radial piston unit16 Dec 2025US 12,497,943 B2Danfoss A/S
- Multi piston machine with at least three switchable displacement volumes2 Sep 2025US 12,404,832 B2Robert Bosch GmbH
- Modular power end12 Feb 2026US 2026/0043397 A1Kerr Machine Co.
- Fluid end with clamped retention2 Oct 2025US 2025/0305585 A1Kerr Machine Co.
- Fuel pump18 Sep 2025US 2025/0290479 A1Mitsubishi Heavy Industries Engine & Turbocharger, Ltd.
- Modular power end31 Jul 2025US 2025/0243854 A1Kerr Machine Co.
- Power End Housing for Plunger Pump and Plunger Pump Including Power End Housing29 May 2025US 2025/0172138 A1Yantai Jereh Oilfield Services Group Co., Ltd.
Most cited
By later US patents
- Air borne craft, for example helicopter, and related devices17US 4,899,957 A1990
- Modular power end8US 11,635,068 B2Kerr Machine Co. · 2023
- Converter for converting mechanical energy into hydraulic energy and robot implementing said converter7US 8,734,123 B2Bia · 2014
- Rotary cylinder device3US 8,443,713 B2Ikiken Co., Ltd. · 2013
- Volumetric pump and its driving mechanism3US 9,022,755 B2Swissinnov Product Sarl · 2015