B23F 21/18
Taper hobs
Official title: Taper hobs, e.g. for bevel gears
B23F21/18 (Taper hobs) appears on 5 US grants and 2 published applications in this corpus.
Search patents in B23F- Granted patents
- 5
- Published applications
- 2
- Assignees
- 3
- Inventors
- 6
- Latest grant
- 24 May 2022
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 1 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 1 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 1 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 1 | 0 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Rotating machine tool and process for cutting gearwheels with asymmetrical teeth24 May 2022US 11,338,380 B2Danfoss Power Solutions Inc.
- Method for machining the flanks of substantially cylindrical gearing having modified crowning, in a diagonal rolling method23 Sep 2014US 8,840,444 B2Gleason-Pfauter Maschinenfabrik GmbH
- Rotary tool for generating bevel gears27 Apr 1993US 5,205,679 AKyoiku Haguroma Kogyo Kabushiki-kaisha
- Rack and pinion gear2 Feb 1988US 4,722,238 A
- Rack and pinion gear and process of fabrication13 May 1986US 4,588,336 A
- Rotating machine tool and process for cutting gearwheels with asymmetrical teeth4 Oct 2018US 2018/0281088 A1Danfoss Power Solutions Inc.
- Method for machining the flanks of substantially cylindrical gearing having modified crowning, in a diagonal rolling method13 Oct 2011US 2011/0250029 A1Gleason-Pfauter Maschinenfabrik GmbH
Most cited
By later US patents
- Rack and pinion gear9US 4,722,238 A1988
- Rotary tool for generating bevel gears5US 5,205,679 AKyoiku Haguroma Kogyo Kabushiki-kaisha · 1993
- Rack and pinion gear and process of fabrication4US 4,588,336 A1986
- Method for machining the flanks of substantially cylindrical gearing having modified crowning, in a diagonal rolling method3US 8,840,444 B2Gleason-Pfauter Maschinenfabrik GmbH · 2014