F16H 61/4017
Control of high pressure
Official title: Control of high pressure, e.g. avoiding excess pressure by a relief valve
F16H61/4017 (Control of high pressure) appears on 141 US grants and 113 published applications in this corpus.
Search patents in F16H- Granted patents
- 141
- Published applications
- 113
- Assignees
- 63
- Inventors
- 244
- Latest grant
- 4 Nov 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 2 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 2 | 0 |
| 2001 | 3 | 0 |
| 2002 | 4 | 1 |
| 2003 | 0 | 0 |
| 2004 | 4 | 4 |
| 2005 | 5 | 6 |
| 2006 | 7 | 3 |
| 2007 | 2 | 6 |
| 2008 | 5 | 4 |
| 2009 | 3 | 6 |
| 2010 | 3 | 5 |
| 2011 | 7 | 0 |
| 2012 | 2 | 3 |
| 2013 | 4 | 4 |
| 2014 | 4 | 8 |
| 2015 | 5 | 11 |
| 2016 | 11 | 4 |
| 2017 | 2 | 4 |
| 2018 | 1 | 14 |
| 2019 | 5 | 2 |
| 2020 | 12 | 6 |
| 2021 | 2 | 1 |
| 2022 | 4 | 9 |
| 2023 | 4 | 5 |
| 2024 | 8 | 3 |
| 2025 | 5 | 3 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Power transmission device for vehicle4 Nov 2025US 12,460,385 B2Hitachi Construction Machinery Co., Ltd.
- Working machine8 Jul 2025US 12,352,012 B2Kubota Corporation
- Load-controlled hydraulic supply for an attachment attached to an agricultural tractor8 Jul 2025US 12,352,292 B2Deere & Company
- Valve4 Mar 2025US 12,241,484 B2Hydac Fluidtechnik GmbH
- Hydraulic system with smart relief valve and valve control method4 Feb 2025US 12,215,779 B2Dana Italia S.R.L.
- Method for operating a driving device of a working machine19 Feb 2026US 2026/0049658 A1ZF Friedrichshafen AG
- Electro-hydraulic drive system26 Jun 2025US 2025/0207338 A1Hamm AG
- Hydraulic Drive System and Method for Producing the Hydrostatic Drive System17 Apr 2025US 2025/0122934 A1HMS-HYBRID MOTION SOLUTIONS GmbH
- Power Transmission Device for Vehicle23 Jan 2025US 2025/0027295 A1Hitachi Construction Machinery Co., Ltd.
- Hydraulic pressure power battery19 Dec 2024US 2024/0418259 A1
Most cited
By later US patents
- Combination valve including improved neutral valve for use in hydrostatic transmission75US 5,546,752 AHydro-Gear Limited Partnership · 1996
- 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
- Method of controlling speed change of hydraulic drive device for vehicle and speed change device47US 5,784,883 AKomatsu Ltd. · 1998
- Method of controlling a hydrostatic drive38US 7,870,727 B2Bosch Rexroth AG · 2011