B23D 37/14
Broaching machines with rotatably-arranged working tools
B23D37/14 (Broaching machines with rotatably-arranged working tools) appears on 13 US grants and 10 published applications in this corpus.
Search patents in B23D- Granted patents
- 13
- Published applications
- 10
- Assignees
- 15
- Inventors
- 32
- Latest grant
- 4 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 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 | 1 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 1 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 1 |
| 2014 | 1 | 1 |
| 2015 | 0 | 1 |
| 2016 | 0 | 0 |
| 2017 | 1 | 0 |
| 2018 | 0 | 1 |
| 2019 | 1 | 0 |
| 2020 | 1 | 0 |
| 2021 | 1 | 1 |
| 2022 | 0 | 1 |
| 2023 | 0 | 0 |
| 2024 | 0 | 1 |
| 2025 | 0 | 0 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Stepped rotary broaches and methods and systems employing same4 Aug 2026US 12,697,670 B2
- Unit for broaching rules of die cutters and method to perform the broaching of a rule for die cutters5 Oct 2021US 11,135,663 B2Pro Form S.R.L.
- Helical broach and internal gear machining method using the same28 Jan 2020US 10,543,541 B2Nachi-Fujikoshi Corp.
- Method and tool for producing a surface of predetermined roughness16 Apr 2019US 10,259,059 B2Guehring KG
- Method and tool for producing a surface of predetermined roughness9 May 2017US 9,643,265 B2Guehring KG
- Stepped rotary broaches and methods and systems employing same5 Dec 2024US 2024/0399477 A1
- 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
- Unit for broaching rules of die cutters and method to perform the broaching of a rule for die cutters29 Jul 2021US 2021/0229194 A1Pro Form S.R.L.
- Helical broach and internal gear machining method using the same30 Aug 2018US 2018/0243847 A1Nachi-Fujikoshi Corp.
- Method and tool for producing a surface of predetermined roughness4 Jun 2015US 2015/0151369 A1Guehring Ohg
Most cited
By later US patents
- Apparatus for working on turbine blade mounting grooves16US 4,537,538 AHitachi, Ltd. · 1985
- Apparatus for broaching rifling9US 4,411,569 AThe United States of America as represented by the Secretary of the Army · 1983
- Apparatus for progressive blind broaching6US 5,167,603 ANational Broach & Machine Company · 1992
- Grooving machine4US 5,295,937 AAmada Company, Limited · 1994
- Method for machining a groove in a metal surface3US 3,961,404 ACaterpillar Tractor Co. · 1976