F16H 61/439
Control of the neutral position
Official title: Control of the neutral position, e.g. by zero tilt rotation holding means
F16H61/439 (Control of the neutral position) appears on 107 US grants and 48 published applications in this corpus.
Search patents in F16H- Granted patents
- 107
- Published applications
- 48
- Assignees
- 49
- Inventors
- 184
- Latest grant
- 14 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 4 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 4 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 3 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 1 |
| 2002 | 3 | 1 |
| 2003 | 2 | 1 |
| 2004 | 2 | 4 |
| 2005 | 4 | 2 |
| 2006 | 5 | 3 |
| 2007 | 2 | 2 |
| 2008 | 7 | 6 |
| 2009 | 1 | 0 |
| 2010 | 2 | 1 |
| 2011 | 3 | 1 |
| 2012 | 0 | 2 |
| 2013 | 3 | 2 |
| 2014 | 2 | 2 |
| 2015 | 2 | 2 |
| 2016 | 3 | 2 |
| 2017 | 1 | 0 |
| 2018 | 5 | 4 |
| 2019 | 1 | 2 |
| 2020 | 7 | 2 |
| 2021 | 3 | 2 |
| 2022 | 2 | 4 |
| 2023 | 3 | 1 |
| 2024 | 2 | 1 |
| 2025 | 2 | 0 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Work vehicle14 Jul 2026US 12,680,611 B2Kubota Corporation
- Control assembly for zero turn device22 Apr 2025US 12,280,820 B1Hydro-Gear Limited Partnership
- Obstacle detector of construction vehicle4 Mar 2025US 12,241,548 B2Sakai Heavy Industries, Ltd.
- Stepless speed change structure4 Jun 2024US 12,000,467 B2Kanzaki Kokyukoki Mfg.Co., Ltd.
- Work vehicle9 Apr 2024US 11,951,827 B2Kubota Corporation
- Work vehicle5 Sep 2024US 2024/0295265 A1Kubota Corporation
- Stepless speed change structure16 Feb 2023US 2023/0049519 A1Kanzaki Kokyukoki Mfg.Co., Ltd.
- Hydraulic circuit architecture with enhanced operation efficency29 Sep 2022US 2022/0307595 A1
- Work vehicle8 Sep 2022US 2022/0281315 A1Kubota Corporation
- Work vehicle and control method for work vehicle28 Jul 2022US 2022/0235533 A1Komatsu Ltd.
Most cited
By later US patents
- Mechanism of returning to neutral for axle driving apparatus92US 5,836,159 AKanzaki Kokyukoki Mfg.Co., Ltd. · 1998
- Zero-turn transaxle with mounted return to neutral mechanism72US 6,487,857 B1Hydro-Gear Limited Partnership · 2002
- Hydrostatic transmission control system for improved hillside operation65US 4,167,855 AEaton Corporation · 1979
- Hydraulic apparatus with return to neutral mechanism49US 6,782,797 B1Hydro-Gear Limited Partnership · 2004
- Variable displacement hydrostatic device and neutral return mechanism therefor43US 5,279,206 AEaton Corporation · 1994