B21B 31/08
Interchanging rolls, roll mountings, or stand frames
Official title: Interchanging rolls, roll mountings, or stand frames {, e.g. using C-hooks; Replacing roll chocks on roll shafts}
B21B31/08 (Interchanging rolls, roll mountings, or stand frames) appears on 343 US grants and 167 published applications in this corpus.
Search patents in B21B- Granted patents
- 343
- Published applications
- 167
- Assignees
- 160
- Inventors
- 566
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 9 | 0 |
| 1977 | 5 | 0 |
| 1978 | 4 | 0 |
| 1979 | 6 | 0 |
| 1980 | 7 | 0 |
| 1981 | 4 | 0 |
| 1982 | 4 | 0 |
| 1983 | 6 | 0 |
| 1984 | 6 | 0 |
| 1985 | 5 | 0 |
| 1986 | 5 | 0 |
| 1987 | 6 | 0 |
| 1988 | 9 | 0 |
| 1989 | 7 | 0 |
| 1990 | 11 | 0 |
| 1991 | 4 | 0 |
| 1992 | 12 | 0 |
| 1993 | 4 | 0 |
| 1994 | 2 | 0 |
| 1995 | 10 | 0 |
| 1996 | 6 | 0 |
| 1997 | 17 | 0 |
| 1998 | 15 | 0 |
| 1999 | 10 | 0 |
| 2000 | 14 | 0 |
| 2001 | 13 | 2 |
| 2002 | 9 | 4 |
| 2003 | 2 | 6 |
| 2004 | 2 | 8 |
| 2005 | 5 | 6 |
| 2006 | 9 | 6 |
| 2007 | 5 | 9 |
| 2008 | 7 | 6 |
| 2009 | 3 | 8 |
| 2010 | 8 | 6 |
| 2011 | 5 | 3 |
| 2012 | 4 | 9 |
| 2013 | 10 | 12 |
| 2014 | 4 | 5 |
| 2015 | 8 | 12 |
| 2016 | 9 | 6 |
| 2017 | 9 | 3 |
| 2018 | 3 | 5 |
| 2019 | 3 | 4 |
| 2020 | 5 | 6 |
| 2021 | 4 | 8 |
| 2022 | 7 | 7 |
| 2023 | 7 | 5 |
| 2024 | 4 | 10 |
| 2025 | 2 | 10 |
| 2026 | 8 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Rolling mill stand and method of changing a work roll assembly thereof22 Sep 2026US 12,741,305 B2Primetals Technologies, Limited
- Three-dimensional quick replacement machine for production line15 Sep 2026US 12,734,570 B2Dalian Field Manufacturing Co., Ltd
- Roll device for rolling metal strips, roll arrangement for use in such a roll device and method for converting a roll device21 Jul 2026US 12,686,042 B2SMS group GmbH
- Rack system, rolling plant including such a system and method implemented by such a system26 May 2026US 12,636,770 B2Fives Dms
- Roller exchange mechanism for reduction roll apparatus14 Apr 2026US 12,599,947 B2Prime Planet Energy & Solutions, Inc.
- Method and apparatus for vertical roll storage25 Jun 2026US 2026/0175275 A1Morgan Engineering Systems, Inc.
- Modular stand base for spaced stands of a rolling mil20 Nov 2025US 2025/0353052 A1
- Stand housing comprising contact surfaces for sliding rails20 Nov 2025US 2025/0353054 A1
- Stand housing comprising a roller guide20 Nov 2025US 2025/0353055 A1
- Modular stand base for stands of a rolling mill20 Nov 2025US 2025/0353057 A1
Most cited
By later US patents
- Rotary cutting dies37US 5,417,132 A1995
- Universal rolling mill stand35US 6,305,205 B1SMS Schloemann-Siemag Aktiengesellschaft · 2001
- Hydraulically actuated tool for mounting and dismounting rolling mill roll neck bearings34US 6,415,489 B1Morgan Construction Company · 2002
- Cold roll forming apparatus proceding for the exchange of rolls as a unit25US 4,368,633 A1983
- Quickly convertible roller forming machine25US 4,724,695 AArtos Engineering Company · 1988