B23F 21/26
Broaching tools
B23F21/26 (Broaching tools) appears on 28 US grants and 20 published applications in this corpus.
Search patents in B23F- Granted patents
- 28
- Published applications
- 20
- Assignees
- 18
- Inventors
- 52
- Latest grant
- 12 Oct 2021
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 2 |
| 2003 | 2 | 1 |
| 2004 | 0 | 1 |
| 2005 | 1 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 2 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 2 |
| 2012 | 0 | 0 |
| 2013 | 2 | 1 |
| 2014 | 0 | 1 |
| 2015 | 0 | 2 |
| 2016 | 1 | 2 |
| 2017 | 2 | 2 |
| 2018 | 3 | 1 |
| 2019 | 1 | 1 |
| 2020 | 1 | 1 |
| 2021 | 1 | 0 |
| 2022 | 0 | 1 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Broach12 Oct 2021US 11,141,803 B2Mitsubishi Materials Corporation
- Helical broach and internal gear machining method using the same28 Jan 2020US 10,543,541 B2Nachi-Fujikoshi Corp.
- Broaching cutter6 Aug 2019US 10,369,645 B2Aisin Aw Co., Ltd.
- Broach tool rake face with a tailored surface topography26 Jun 2018US 10,005,144 B2United Technologies Corporation
- Helical broach27 Mar 2018US 9,925,607 B2Mitsubishi Heavy Industries Machine Tool Co., Ltd.
- Method for manufacturing a rack comprising variable-pitch toothing implementing a roughing step followed by a finishing step and a helical broaching tool29 Dec 2022US 2022/0410295 A1Jtekt Europe
- Broach24 Sep 2020US 2020/0298326 A1Mitsubishi Materials Corporation
- Tool, an appratus for machining splines on a workpiece and a method of machining splines on a workpiece17 Jan 2019US 2019/0015915 A1ROLLS-ROYCE plc
- Helical broach and internal gear machining method using the same30 Aug 2018US 2018/0243847 A1Nachi-Fujikoshi Corp.
- Broach tool rake face with a tailored surface topography7 Sep 2017US 2017/0252840 A1United Technologies Corporation
Most cited
By later US patents
- Internal broach for the internal broaching of profiles17US 5,865,569 AOswald Forst Maschinenfabrik und Apparatebauanstalt GmbH & Co Kommanditgesellschaft · 1999
- Internal broach13US 7,338,235 B2Forst Technologie GmbH & Co. KG · 2008
- Pot broach rings8US 4,038,730 ALear Siegler, Inc. · 1977
- Helical toothed broach6US 4,274,767 ALear Siegler, Inc. · 1981
- Internal broach6US 6,918,716 B2Forst Technologie GmbH & Co. KG · 2005