B23P 19/067
Bolt tensioners
Official title: {Bolt tensioners (for hand tools B25B29/02)}
B23P19/067 (Bolt tensioners) appears on 162 US grants and 121 published applications in this corpus.
Search patents in B23P- Granted patents
- 162
- Published applications
- 121
- Assignees
- 82
- Inventors
- 232
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 3 | 0 |
| 1979 | 2 | 0 |
| 1980 | 2 | 0 |
| 1981 | 3 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 3 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 5 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 4 | 0 |
| 1994 | 1 | 0 |
| 1995 | 5 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 5 | 0 |
| 1999 | 6 | 0 |
| 2000 | 5 | 0 |
| 2001 | 3 | 0 |
| 2002 | 3 | 0 |
| 2003 | 1 | 1 |
| 2004 | 1 | 1 |
| 2005 | 0 | 1 |
| 2006 | 2 | 3 |
| 2007 | 1 | 2 |
| 2008 | 1 | 7 |
| 2009 | 2 | 1 |
| 2010 | 4 | 4 |
| 2011 | 0 | 5 |
| 2012 | 4 | 2 |
| 2013 | 2 | 8 |
| 2014 | 0 | 8 |
| 2015 | 6 | 5 |
| 2016 | 8 | 3 |
| 2017 | 3 | 7 |
| 2018 | 5 | 5 |
| 2019 | 7 | 8 |
| 2020 | 6 | 8 |
| 2021 | 7 | 11 |
| 2022 | 11 | 9 |
| 2023 | 7 | 5 |
| 2024 | 7 | 5 |
| 2025 | 11 | 8 |
| 2026 | 3 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Hydraulic tension adaptor6 Oct 2026US 12,752,383 B2
- Hydraulic piston with embedded linear variable differential transducer for precision position sensing23 Jun 2026US 12,661,744 B2Rtx Corporation
- Tensioner and method of using same17 Feb 2026US 12,553,550 B2SPM Oil & Gas Inc.
- Injection driver assembly for hollow bar bolt installation14 Oct 2025US 12,442,299 B2Cementation USA Inc.
- Method for installing and/or maintaining a flange connection, and tool and use7 Oct 2025US 12,434,336 B2SCHAAF GmbH & Co. KG
- Method of detecting a position of at least one bolt end of at least one bolt13 Aug 2026US 2026/0235154 A1
- Method for installing flange connections, use of a bolt tensioning device, computer program product, use of a computer program product and storage medium9 Jul 2026US 2026/0194415 A1SCHAAF GmbH & Co. KG
- Hydraulic piston with embedded linear variable differential transducer for precision position sensing18 Jun 2026US 2026/0166665 A1Rtx Corporation
- Automated trolley system for tightening tower segments in wind turbines16 Apr 2026US 2026/0102858 A1HYTORC Division UNEX Corporation
- Method and system for applying pre-stretch to shaft and component connection28 Aug 2025US 2025/0270933 A1Rtx Corporation
Most cited
By later US patents
- Hydraulic threaded bolt tightening device and method of use thereof62US 7,062,998 B22006
- Nut and device for tightening provided with the same53US 5,934,853 A1999
- Pre-tensioning device for fastening elements and method for pre-tensioning a fastening element36US 5,772,378 AKvaerner Tamturbine Oy · 1998
- Method of ensuring the tightness of a bolt and a nut29US 4,450,616 AYamashina Seiko-Sho, Ltd. · 1984
- High temperature bolting system28US 6,199,453 B1Steinbock Machinery Co. · 2001