A01F 29/22
Arrangement of knife sharpening devices
A01F29/22 (Arrangement of knife sharpening devices) appears on 40 US grants and 25 published applications in this corpus.
Search patents in A01F- Granted patents
- 40
- Published applications
- 25
- Assignees
- 19
- Inventors
- 68
- Latest grant
- 21 May 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 3 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 1 |
| 2002 | 4 | 2 |
| 2003 | 1 | 0 |
| 2004 | 0 | 1 |
| 2005 | 1 | 3 |
| 2006 | 2 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 1 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 0 |
| 2012 | 0 | 1 |
| 2013 | 1 | 2 |
| 2014 | 0 | 1 |
| 2015 | 1 | 1 |
| 2016 | 2 | 0 |
| 2017 | 1 | 1 |
| 2018 | 1 | 2 |
| 2019 | 0 | 1 |
| 2020 | 1 | 3 |
| 2021 | 1 | 3 |
| 2022 | 3 | 1 |
| 2023 | 1 | 0 |
| 2024 | 2 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Forage harvester adjustment apparatus21 May 2024US 11,985,919 B2AGCO International GmbH
- Straw crushing device capable of driving sharpening structure23 Apr 2024US 11,963,483 B1Institute of Environment and Sustainable Development in Agriculture, CAAS
- Cutting sharpness detection device31 Jan 2023US 11,566,883 B2CLAAS Selbstfahrende Erntemaschinen GmbH
- Method for sharpening knives of an agricultural vehicle27 Dec 2022US 11,534,882 B2CNH Industrial America LLC
- Forage harvester comprising a monitoring mechanism for shear bar and cutting drum7 Jun 2022US 11,350,569 B2CNH Industrial America LLC
- System and method determining whether to grind chopping blades of a chopping device17 Nov 2022US 2022/0361405 A1CLAAS Selbstfahrende Erntemaschinen GmbH
- Forage harvester adjustment apparatus2 Dec 2021US 2021/0368682 A1AGCO International GmbH
- Forage harvester comprising a monitoring mechanism for shear bar and cutting drum6 May 2021US 2021/0127578 A1CNH Industrial America LLC
- Method for Sharpening Knives of an Agricultural Vehicle18 Mar 2021US 2021/0078128 A1CNH Industrial America LLC
- Driver assistance system of a forage harvester19 Nov 2020US 2020/0359563 A1CLAAS Selbstfahrende Erntemaschinen GmbH
Most cited
By later US patents
- Automatic forage harvester shearbar adjusting20US 4,934,612 ADeere & Company · 1990
- Harvesting machine comprising a monitoring device for monitoring the sharpness of cutting blades and/or their distance to a counter-cutter20US 6,931,828 B2Deere & Company · 2005
- Process for sharpening the knives of a rotating drum and adjusting the fixed counter-knife cooperating therewith and device for carrying out this process14US 5,209,025 AHesston Braud · 1993
- Automatic forage harvester knife sharpening system12US 4,843,767 ADeere & Company · 1989
- Forage harvester cutterhead and method of sharpening10US 4,319,718 ASperry Corporation · 1982