F16H 61/4139
Replenishing or scavenging pumps
Official title: Replenishing or scavenging pumps, e.g. auxiliary charge pumps
F16H61/4139 (Replenishing or scavenging pumps) appears on 123 US grants and 82 published applications in this corpus.
Search patents in F16H- Granted patents
- 123
- Published applications
- 82
- Assignees
- 60
- Inventors
- 192
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 3 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 4 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 3 | 0 |
| 1997 | 1 | 0 |
| 1998 | 3 | 0 |
| 1999 | 3 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 1 |
| 2002 | 7 | 3 |
| 2003 | 3 | 2 |
| 2004 | 3 | 5 |
| 2005 | 3 | 3 |
| 2006 | 5 | 6 |
| 2007 | 2 | 7 |
| 2008 | 5 | 4 |
| 2009 | 2 | 4 |
| 2010 | 5 | 3 |
| 2011 | 1 | 2 |
| 2012 | 2 | 2 |
| 2013 | 2 | 4 |
| 2014 | 5 | 4 |
| 2015 | 3 | 4 |
| 2016 | 3 | 2 |
| 2017 | 10 | 3 |
| 2018 | 3 | 5 |
| 2019 | 5 | 2 |
| 2020 | 4 | 2 |
| 2021 | 2 | 4 |
| 2022 | 2 | 3 |
| 2023 | 2 | 4 |
| 2024 | 4 | 0 |
| 2025 | 1 | 2 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Start-up or disengagement method for an electro-hydraulic transmission11 Aug 2026US 12,704,175 B2Poclain Hydraulics Industrie
- Hydraulic system with smart relief valve and valve control method4 Feb 2025US 12,215,779 B2Dana Italia S.R.L.
- Work vehicle9 Jul 2024US 12,031,299 B2Hitachi Construction Machinery Co., Ltd.
- Draper head with securing action for a height-adjustable reel11 Jun 2024US 12,004,453 B2Carl Geringhoff GmbH & Co. KG
- Soil processing machine and method for operating a soil processing machine30 Apr 2024US 11,971,099 B2Hamm AG
- Control of a free-wheeling valve2 Apr 2026US 2026/0092646 A1
- Working vehicle26 Jun 2025US 2025/0207659 A1Kubota Corporation
- Improved start-up or disengagement method for an electro-hydraulic transmission20 Feb 2025US 2025/0060033 A1Poclain Hydraulics Industrie
- Hydraulic system with smart relief valve and valve control method19 Oct 2023US 2023/0332683 A1Dana Italia S.R.L.
- Cooling scheme for hydrostatic transmission3 Aug 2023US 2023/0243419 A1Caterpillar Inc.
Most cited
By later US patents
- Auxiliary pumps for axle driving apparatus including hydrostatic transmission88US 5,555,727 AHydro-Gear · 1996
- Pump unit77US 6,425,244 B1Kanzaki Kokyukoki Mfg.Co., Ltd. · 2002
- Oil pressure control valve assembly for hydrostatic transmissions60US 5,333,451 AKanzaki Kokyukoki Mfg.Co., Ltd. · 1994
- Hydrostatic transmission55US 5,588,294 AKanzaki Kokyukoki Mfg.Co., Ltd. · 1996
- Energy recovery system for work vehicle including hydraulic drive circuit and method of recovering energy55US 6,971,463 B2CNH America LLC · 2005