F16H 61/4078
Fluid exchange between hydrostatic circuits and external sources or consumers
F16H61/4078 (Fluid exchange between hydrostatic circuits and external sources or consumers) appears on 402 US grants and 322 published applications in this corpus.
Search patents in F16H- Granted patents
- 402
- Published applications
- 322
- Assignees
- 166
- Inventors
- 690
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 2 | 0 |
| 1978 | 4 | 0 |
| 1979 | 3 | 0 |
| 1980 | 3 | 0 |
| 1981 | 1 | 0 |
| 1982 | 5 | 0 |
| 1983 | 2 | 0 |
| 1984 | 3 | 0 |
| 1985 | 3 | 0 |
| 1986 | 3 | 0 |
| 1987 | 4 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 5 | 0 |
| 1991 | 4 | 0 |
| 1992 | 6 | 0 |
| 1993 | 3 | 0 |
| 1994 | 3 | 0 |
| 1995 | 2 | 0 |
| 1996 | 5 | 0 |
| 1997 | 6 | 0 |
| 1998 | 4 | 0 |
| 1999 | 10 | 0 |
| 2000 | 8 | 0 |
| 2001 | 6 | 3 |
| 2002 | 13 | 5 |
| 2003 | 7 | 5 |
| 2004 | 5 | 12 |
| 2005 | 5 | 9 |
| 2006 | 12 | 12 |
| 2007 | 5 | 14 |
| 2008 | 14 | 15 |
| 2009 | 8 | 22 |
| 2010 | 13 | 18 |
| 2011 | 10 | 11 |
| 2012 | 16 | 16 |
| 2013 | 11 | 24 |
| 2014 | 19 | 12 |
| 2015 | 15 | 18 |
| 2016 | 13 | 13 |
| 2017 | 24 | 17 |
| 2018 | 13 | 19 |
| 2019 | 21 | 15 |
| 2020 | 25 | 11 |
| 2021 | 9 | 14 |
| 2022 | 14 | 9 |
| 2023 | 6 | 8 |
| 2024 | 8 | 8 |
| 2025 | 7 | 6 |
| 2026 | 5 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Start-up or disengagement method for an electro-hydraulic transmission11 Aug 2026US 12,704,175 B2Poclain Hydraulics Industrie
- Hydraulic braking energy utilization for emergency steering, braking, charging accumulator(s), and/or work functions to reduce or prevent engine from overspeed, assist acceleration and/or unlimited towing21 Jul 2026US 12,687,181 B2Applied Industrial Technologies, Inc.
- Hydraulic system5 May 2026US 12,618,467 B2Kawasaki Jukogyo Kabushiki Kaisha
- Speed-changing device10 Mar 2026US 12,571,461 B2Hitachi Construction Machinery Co., Ltd.
- Hydraulic circuit for a construction machine27 Jan 2026US 12,534,882 B2Caterpillar SARL
- Hydraulic drive system25 Jun 2026US 2026/0177083 A1Hamm AG
- Drive Device21 May 2026US 2026/0139737 A1Hydac Technology GmbH
- Hydraulic systems for a power machine7 May 2026US 2026/0126104 A1Doosan Bobcat North America, Inc.
- Control of a free-wheeling valve2 Apr 2026US 2026/0092646 A1
- Energy Storage and Control System for Pipeline Flow Control12 Feb 2026US 2026/0043422 A1
Most cited
By later US patents
- Hybrid propulsion system for road vehicles153US 6,170,587 B2Transport Energy Systems PTY LTD · 2001
- Hydraulic hybrid vehicle107US 6,719,080 B1The United States of America as represented by the Administrator of the Enviromental Protection Agency · 2004
- Auxiliary pumps for axle driving apparatus including hydrostatic transmission88US 5,555,727 AHydro-Gear · 1996
- Drive assembly with energy accumulator81US 4,098,144 AMaschinenfabrik Augsburg-Nurnberg Aktiengesellschaft · 1978
- Pump unit77US 6,425,244 B1Kanzaki Kokyukoki Mfg.Co., Ltd. · 2002