B24B 3/42
Helically bent
Official title: helically bent, e.g. for lawn mowers
B24B3/42 (Helically bent) appears on 42 US grants and 18 published applications in this corpus.
Search patents in B24B- Granted patents
- 42
- Published applications
- 18
- Assignees
- 18
- Inventors
- 57
- Latest grant
- 24 Dec 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 3 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 1 |
| 2002 | 1 | 0 |
| 2003 | 0 | 0 |
| 2004 | 4 | 1 |
| 2005 | 1 | 0 |
| 2006 | 0 | 0 |
| 2007 | 1 | 1 |
| 2008 | 0 | 1 |
| 2009 | 1 | 1 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 1 | 0 |
| 2013 | 0 | 1 |
| 2014 | 0 | 0 |
| 2015 | 1 | 0 |
| 2016 | 0 | 2 |
| 2017 | 2 | 0 |
| 2018 | 0 | 1 |
| 2019 | 1 | 3 |
| 2020 | 0 | 2 |
| 2021 | 0 | 1 |
| 2022 | 0 | 0 |
| 2023 | 2 | 1 |
| 2024 | 2 | 0 |
| 2025 | 0 | 2 |
By publication year. Applications have been published since 2001.
Recent patents
- Blade sharpeners24 Dec 2024US 12,172,261 B2The Great States Corporation
- Blade sharpeners9 Jan 2024US 11,865,662 B2American Lawn Mower Co.
- Grinding positioning plate for reel-type mower unit21 Nov 2023US 11,819,974 B2Foley United LLC
- Mower reel grinding system with rotating rear brackets2 May 2023US 11,638,975 B2Foley United LLC
- Mower reel grinding system using predetermined bracket positions5 Mar 2019US 10,220,482 B2Foley-Belsaw Company
- Low-profile grinding machine for sharpening lawn mower cutting reels17 Jul 2025US 2025/0229374 A1Foley Company, LLC
- Lawn mower blade grinding machine with connected controls13 Mar 2025US 2025/0083281 A1Foley Company, LLC
- Blade sharpeners14 Dec 2023US 2023/0398652 A1American Lawn Mower Co.
- Blade sharpeners27 May 2021US 2021/0154792 A1American Lawn Mower Co.
- Jig for sharpening mower blades13 Aug 2020US 2020/0254582 A1
Most cited
By later US patents
- Lawn mower blade grinder16US 4,148,158 A1979
- Grinding machine and method of sharpening grass mower bedknives16US 5,725,415 A1998
- Planing tool for a woodworking machine15US 4,830,073 AMida-Maquinas Industriais do Ave,Lda. · 1989
- Relief grinding of lawn mower cylindrical blades14US 4,694,613 AAtterton and Ellis Limited · 1987
- Mover reel blade relief grinding device13US 5,321,912 ANeary Manufacturing, Inc. · 1994