A01B 61/02
Devices for, or parts of, agricultural machines or implements for preventing overstrain
Official title: of the coupling devices between tractor and machine
A01B61/02 (Devices for, or parts of, agricultural machines or implements for preventing overstrain) appears on 66 US grants and 58 published applications in this corpus.
Search patents in A01B- Granted patents
- 66
- Published applications
- 58
- Assignees
- 40
- Inventors
- 124
- Latest grant
- 3 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 2 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 5 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 1 |
| 2003 | 1 | 6 |
| 2004 | 2 | 1 |
| 2005 | 1 | 2 |
| 2006 | 1 | 2 |
| 2007 | 0 | 0 |
| 2008 | 1 | 1 |
| 2009 | 1 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 1 |
| 2012 | 0 | 1 |
| 2013 | 2 | 0 |
| 2014 | 0 | 2 |
| 2015 | 1 | 5 |
| 2016 | 4 | 3 |
| 2017 | 3 | 2 |
| 2018 | 3 | 3 |
| 2019 | 1 | 1 |
| 2020 | 2 | 6 |
| 2021 | 3 | 5 |
| 2022 | 2 | 6 |
| 2023 | 4 | 2 |
| 2024 | 2 | 2 |
| 2025 | 7 | 5 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Self-aligning, engagement-biased hitch apparatuses, methods, and systems3 Feb 2026US 12,538,857 B1ABI Attachments, Inc.
- Working machine2 Dec 2025US 12,485,762 B2Kubota Corporation
- Cart stability system16 Sep 2025US 12,415,486 B2Deere & Company
- Pressure to hold or raise the head for a work implement12 Aug 2025US 12,382,848 B2Deere & Company
- Power unit with salt spreader and salt spreader for use therewith12 Aug 2025US 12,385,201 B2Venture Products, Inc.
- A Linkage System For Mounting An Implement To A Vehicle25 Dec 2025US 2025/0386756 A1
- Cart stability system25 Dec 2025US 2025/0388197 A1Deere & Company
- Agricultural machine with active coupling points22 May 2025US 2025/0160234 A1Kuhn S. A.
- Working machine10 Apr 2025US 2025/0115130 A1Kubota Corporation
- Pressure to hold or raise the head for a work implement30 Jan 2025US 2025/0031595 A1Deere & Company
Most cited
By later US patents
- Control system for the drive of a pto for an agricultural vehicle60US 6,942,595 B2CNH America LLC · 2005
- Drive assembly for locking one or several operating units of an agricultural implement or of a self-propelled implement57US 7,464,526 B2GKN Walterscheid GmbH · 2008
- Coupling member47US 4,236,613 A1980
- Overload clutch26US 4,566,570 AJean Walterscheid GmbH · 1986
- Apparatus and method for measuring strain21US 4,858,475 ARevere Corporation of America · 1989