B25B 29/02
Bolt tensioners
B25B29/02 (Bolt tensioners) appears on 229 US grants and 156 published applications in this corpus.
Search patents in B25B- Granted patents
- 229
- Published applications
- 156
- Assignees
- 110
- Inventors
- 275
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 7 | 0 |
| 1978 | 5 | 0 |
| 1979 | 3 | 0 |
| 1980 | 4 | 0 |
| 1981 | 8 | 0 |
| 1982 | 3 | 0 |
| 1983 | 3 | 0 |
| 1984 | 2 | 0 |
| 1985 | 4 | 0 |
| 1986 | 6 | 0 |
| 1987 | 3 | 0 |
| 1988 | 3 | 0 |
| 1989 | 8 | 0 |
| 1990 | 2 | 0 |
| 1991 | 6 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 3 | 0 |
| 1995 | 6 | 0 |
| 1996 | 2 | 0 |
| 1997 | 2 | 0 |
| 1998 | 5 | 0 |
| 1999 | 4 | 0 |
| 2000 | 5 | 0 |
| 2001 | 3 | 0 |
| 2002 | 3 | 0 |
| 2003 | 0 | 0 |
| 2004 | 1 | 6 |
| 2005 | 1 | 11 |
| 2006 | 5 | 3 |
| 2007 | 4 | 2 |
| 2008 | 2 | 8 |
| 2009 | 1 | 4 |
| 2010 | 4 | 3 |
| 2011 | 0 | 8 |
| 2012 | 6 | 2 |
| 2013 | 6 | 9 |
| 2014 | 1 | 7 |
| 2015 | 6 | 5 |
| 2016 | 12 | 5 |
| 2017 | 3 | 9 |
| 2018 | 4 | 5 |
| 2019 | 9 | 9 |
| 2020 | 9 | 11 |
| 2021 | 6 | 10 |
| 2022 | 9 | 14 |
| 2023 | 7 | 4 |
| 2024 | 14 | 8 |
| 2025 | 9 | 7 |
| 2026 | 4 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Hydraulic tension adaptor6 Oct 2026US 12,752,383 B2
- Bolt tensioning tool29 Sep 2026US 12,746,650 B2Milwaukee Electric Tool Corporation
- Method of designing a bolted joint17 Mar 2026US 12,578,243 B2R&D Engineering A/S
- Tensioner and method of using same17 Feb 2026US 12,553,550 B2SPM Oil & Gas Inc.
- Method for installing and/or maintaining a flange connection, and tool and use7 Oct 2025US 12,434,336 B2SCHAAF GmbH & Co. KG
- Tensioning device and method for tensioning a threaded rod10 Sep 2026US 2026/0264205 A1
- Hydraulic piston with embedded linear variable differential transducer for precision position sensing18 Jun 2026US 2026/0166665 A1Rtx Corporation
- System for Assembly of Flanged Joints18 Jun 2026US 2026/0168601 A1Integrity Engineering Solutions Pty Ltd
- Valve tightening assembly for multiport rotary valves21 May 2026US 2026/0139761 A1ILiAD IP COMPANY, LLC
- Automated trolley system for tightening tower segments in wind turbines16 Apr 2026US 2026/0102858 A1HYTORC Division UNEX Corporation
Most cited
By later US patents
- Hydraulic threaded bolt tightening device and method of use thereof62US 7,062,998 B22006
- Apparatus to mechanically stress a bolt-type fastener39US 4,622,730 A1986
- Pre-tensioning device for fastening elements and method for pre-tensioning a fastening element36US 5,772,378 AKvaerner Tamturbine Oy · 1998
- Motor-driven screwing and transporting tool for reactor pressure vessel head retaining fastenings30US 4,047,456 AKraftwerk Union Aktiengesellschaft · 1977
- Force applicators30US 5,046,906 A1991