B21H 5/02
Making gear wheels , racks, spline shafts or worms: with cylindrical outline
Official title: with cylindrical outline {, e.g. by means of die rolls (worms B21H5/005)}
B21H5/02 (Making gear wheels , racks, spline shafts or worms: with cylindrical outline) appears on 268 US grants and 122 published applications in this corpus.
Search patents in B21H- Granted patents
- 268
- Published applications
- 122
- Assignees
- 139
- Inventors
- 365
- Latest grant
- 6 Jan 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 4 | 0 |
| 1978 | 3 | 0 |
| 1979 | 1 | 0 |
| 1980 | 4 | 0 |
| 1981 | 3 | 0 |
| 1982 | 3 | 0 |
| 1983 | 7 | 0 |
| 1984 | 3 | 0 |
| 1985 | 5 | 0 |
| 1986 | 6 | 0 |
| 1987 | 10 | 0 |
| 1988 | 10 | 0 |
| 1989 | 8 | 0 |
| 1990 | 6 | 0 |
| 1991 | 2 | 0 |
| 1992 | 3 | 0 |
| 1993 | 4 | 0 |
| 1994 | 4 | 0 |
| 1995 | 7 | 0 |
| 1996 | 6 | 0 |
| 1997 | 7 | 0 |
| 1998 | 15 | 0 |
| 1999 | 14 | 0 |
| 2000 | 13 | 0 |
| 2001 | 10 | 4 |
| 2002 | 12 | 7 |
| 2003 | 5 | 4 |
| 2004 | 7 | 7 |
| 2005 | 2 | 4 |
| 2006 | 7 | 7 |
| 2007 | 3 | 4 |
| 2008 | 5 | 13 |
| 2009 | 2 | 5 |
| 2010 | 2 | 6 |
| 2011 | 4 | 5 |
| 2012 | 2 | 4 |
| 2013 | 7 | 3 |
| 2014 | 8 | 6 |
| 2015 | 3 | 4 |
| 2016 | 5 | 8 |
| 2017 | 3 | 3 |
| 2018 | 5 | 3 |
| 2019 | 5 | 4 |
| 2020 | 3 | 5 |
| 2021 | 5 | 3 |
| 2022 | 6 | 4 |
| 2023 | 3 | 4 |
| 2024 | 3 | 2 |
| 2025 | 0 | 2 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Tool unit for a cold forming machine6 Jan 2026US 12,515,250 B2Osg Ex-Cell-O GmbH
- Apparatus and method for profiling workpieces by cold forming31 Dec 2024US 12,179,254 B2Ernst Grob AG
- Roll spinning forming device and method for toothed part31 Dec 2024US 12,179,255 B2South China University of Technology
- Method for manufacturing gear4 Jun 2024US 11,998,973 B2Aisin Corporation
- Gear-tooth system and shaft/hub connection component19 Sep 2023US 11,761,489 B2GKN Driveline Deutschland GmbH
- Manufacturing method of gear12 Feb 2026US 2026/0042140 A1Aisin Corporation
- Cold forming machine23 Oct 2025US 2025/0326024 A1Osg Ex-Cell-O GmbH
- Rolling apparatus9 Oct 2025US 2025/0312834 A1Sanmei Works Co., Ltd.
- Device and method for the cold-forming profiling of workpieces8 Aug 2024US 2024/0261840 A1Ernst Grob AG
- Gear23 May 2024US 2024/0167555 A1Miba Sinter Austria GmbH
Most cited
By later US patents
- Method of spin forming and part made thereof77US 6,694,791 B1Hayes-Albion Corporation · 2004
- Apparatus and method for forming powder metal gears46US 6,517,772 B1Federal-Mogul World Wide, Inc. · 2003
- Toothed wheel for use in automobiles and its manufacturing method42US 5,310,432 AKubota Iron Works Co., Ltd. · 1994
- Torque transmitting structure and method of manufacture34US 5,384,949 AGeneral Motors Corporation · 1995
- Forming method and machine for splining power transmission members32US 3,982,415 AAnderson-Cook, Inc. · 1976