E02F 3/425
Drive systems for dipper-arms, backhoes or the like
Official title: {Drive systems for dipper-arms, backhoes or the like}
E02F3/425 (Drive systems for dipper-arms, backhoes or the like) appears on 255 US grants and 263 published applications in this corpus.
Search patents in E02F- Granted patents
- 255
- Published applications
- 263
- Assignees
- 80
- Inventors
- 507
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 5 | 0 |
| 1978 | 6 | 0 |
| 1979 | 3 | 0 |
| 1980 | 3 | 0 |
| 1981 | 2 | 0 |
| 1982 | 4 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 2 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 3 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 0 |
| 2002 | 3 | 0 |
| 2003 | 0 | 3 |
| 2004 | 1 | 0 |
| 2005 | 0 | 2 |
| 2006 | 1 | 4 |
| 2007 | 3 | 2 |
| 2008 | 0 | 3 |
| 2009 | 1 | 3 |
| 2010 | 3 | 0 |
| 2011 | 3 | 4 |
| 2012 | 0 | 5 |
| 2013 | 1 | 7 |
| 2014 | 4 | 7 |
| 2015 | 10 | 19 |
| 2016 | 10 | 22 |
| 2017 | 22 | 24 |
| 2018 | 13 | 26 |
| 2019 | 26 | 17 |
| 2020 | 23 | 19 |
| 2021 | 13 | 16 |
| 2022 | 15 | 30 |
| 2023 | 11 | 14 |
| 2024 | 18 | 12 |
| 2025 | 20 | 10 |
| 2026 | 14 | 14 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Construction machine6 Oct 2026US 12,753,569 B2Hitachi Construction Machinery Co., Ltd.
- Construction machine25 Aug 2026US 12,716,201 B2Hitachi Construction Machinery Co., Ltd.
- Drive transmission device and construction machine25 Aug 2026US 12,716,471 B2Nabtesco Corporation
- Driving apparatus, driving method, and driving program18 Aug 2026US 12,709,869 B2Nabtesco Corporation
- Electric cylinder and work machine21 Jul 2026US 12,686,990 B2Komatsu Ltd.
- Drive system of working machine8 Oct 2026US 2026/0308868 A1
- Working vehicle and method for manufacturing working vehicle24 Sep 2026US 2026/0286648 A1Takeuchi Mfg. Co., Ltd.
- Construction machine10 Sep 2026US 2026/0266015 A1
- Electric work machine with energy recovery10 Sep 2026US 2026/0266026 A1Caterpillar Inc.
- Drive device and work machine10 Sep 2026US 2026/0266359 A1Yanmar Holdings Co., Ltd.
Most cited
By later US patents
- Motor drive system for an electric mining shovel85US 4,263,535 ABucyrus-Erie Company · 1981
- Power shovel with variable pitch braces33US 5,499,463 AHarnischfeger Corporation · 1996
- Hybrid excavator including a fast-stopping apparatus for a hybrid actuator32US 8,869,924 B2Volvo Construction Equipment AB · 2014
- Power shovel with dipper door snubber and/or closure assembly30US 6,219,946 B1Harnischfeger Technologies, Inc. · 2001
- Control device for a power shovel29US 4,889,466 AKabushiki Kaisha Komatsu Seisakusho · 1989