B21H 3/042
Thread-rolling heads
Official title: {Thread-rolling heads}
B21H3/042 (Thread-rolling heads) appears on 61 US grants and 48 published applications in this corpus.
Search patents in B21H- Granted patents
- 61
- Published applications
- 48
- Assignees
- 34
- Inventors
- 104
- Latest grant
- 30 Dec 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 2 | 0 |
| 1987 | 0 | 0 |
| 1988 | 3 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 3 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 0 |
| 2002 | 0 | 1 |
| 2003 | 2 | 1 |
| 2004 | 2 | 2 |
| 2005 | 0 | 3 |
| 2006 | 3 | 2 |
| 2007 | 2 | 0 |
| 2008 | 1 | 2 |
| 2009 | 1 | 2 |
| 2010 | 0 | 0 |
| 2011 | 0 | 1 |
| 2012 | 2 | 1 |
| 2013 | 0 | 0 |
| 2014 | 1 | 3 |
| 2015 | 0 | 4 |
| 2016 | 2 | 3 |
| 2017 | 2 | 3 |
| 2018 | 3 | 3 |
| 2019 | 2 | 2 |
| 2020 | 1 | 3 |
| 2021 | 2 | 1 |
| 2022 | 2 | 4 |
| 2023 | 1 | 1 |
| 2024 | 5 | 2 |
| 2025 | 2 | 2 |
| 2026 | 0 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Rolled thread screw and rolled thread screw manufacturing method30 Dec 2025US 12,510,111 B2Nsk Ltd.
- Self-drilling screw structure and manufacturing method thereof15 Apr 2025US 12,276,296 B2Bi-Mirth Corp.
- Rolled thread screw and rolled thread screw manufacturing method26 Nov 2024US 12,152,624 B2Nsk Ltd.
- Method of manufacturing steering shaft8 Oct 2024US 12,109,608 B2Hitachi Astemo, Ltd.
- Screw shaft and method for manufacturing same, and electric position adjusting device for steering wheel and method for manufacturing same23 Jul 2024US 12,043,302 B2Nsk Ltd.
- End-profiling machine, method for end-profiling a thread, and fastening means2 Jul 2026US 2026/0183831 A1KAMAX Holding GmbH & Co. KG
- Male thread repair tool21 May 2026US 2026/0138176 A1
- Adjustment device of a thread rolling machine27 Nov 2025US 2025/0360555 A1Chuan Yi Sheng Machinery Co., Ltd.
- Rolled thread screw and rolled thread screw manufacturing method6 Feb 2025US 2025/0043813 A1Nsk Ltd.
- Thread-rolling apparatus with distance-sensing operation21 Nov 2024US 2024/0383031 A1Chuan Yi Sheng Machinery Co., Ltd.
Most cited
By later US patents
- Radial infeed thread roll attachment15US 4,426,869 ALitton Industrial Products, Inc. · 1984
- Control mechanism for thread rolling attachment12US 4,766,750 AC. J. Winter Machine Works · 1988
- Apparatus for reforming and restoring the surface of a cylindrical workpiece manually10US 4,942,752 A1990
- Tangential rolling head9US 4,336,703 AWilhelm Fette GmbH · 1982
- Thread rolling attachment9US 4,617,816 AC. J. Winter Machine Works · 1986