F16B 31/043
Prestressed connections tensioned by means of liquid, grease, rubber, explosive charge, or
Official title: {Prestressed connections tensioned by means of liquid, grease, rubber, explosive charge, or the like (hydraulic bolt tensioners B25B29/02)}
F16B31/043 (Prestressed connections tensioned by means of liquid, grease, rubber, explosive charge, or) appears on 111 US grants and 92 published applications in this corpus.
Search patents in F16B- Granted patents
- 111
- Published applications
- 92
- Assignees
- 59
- Inventors
- 134
- Latest grant
- 8 Jul 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 3 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 3 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 3 | 0 |
| 1999 | 2 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 2 | 0 |
| 2003 | 1 | 1 |
| 2004 | 1 | 2 |
| 2005 | 1 | 2 |
| 2006 | 2 | 0 |
| 2007 | 1 | 2 |
| 2008 | 1 | 2 |
| 2009 | 1 | 3 |
| 2010 | 1 | 3 |
| 2011 | 1 | 6 |
| 2012 | 1 | 0 |
| 2013 | 5 | 4 |
| 2014 | 2 | 7 |
| 2015 | 4 | 6 |
| 2016 | 2 | 8 |
| 2017 | 7 | 9 |
| 2018 | 7 | 8 |
| 2019 | 11 | 5 |
| 2020 | 8 | 5 |
| 2021 | 3 | 4 |
| 2022 | 4 | 6 |
| 2023 | 5 | 3 |
| 2024 | 7 | 3 |
| 2025 | 2 | 2 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Method and apparatus for fastening in a high fluid pressure environment8 Jul 2025US 12,350,774 B2Nord-Lock Switzerland GmbH
- Systems and methods for assembling a hammer tool13 May 2025US 12,297,855 B2Caterpillar Inc.
- Device for tensioning a connecting element30 Jul 2024US 12,048,989 B2Caterpillar Energy Solutions GmbH
- Method and apparatus for fastening in a high fluid pressure environment23 Jul 2024US 12,044,264 B2Nord-Lock Switzerland GmbH
- Device for tensioning a connecting element16 Jul 2024US 12,036,645 B2Caterpillar Energy Solutions GmbH
- Device for preventing pulp spills or leaks from the inside of mills, with a shock absorber1 Jan 2026US 2026/0001081 A1
- Tightening control method and automatic tightening device for aero-engine rotor based on bolt preload feedback9 Oct 2025US 2025/0312873 A1Dalian University of Technology
- Radial fit bolt assembly30 Jan 2025US 2025/0035146 A1
- Method and apparatus for fastening in a high fluid pressure environment7 Nov 2024US 2024/0367274 A1Nord-Lock Switzerland GmbH
- Systems and methods for assembling a hammer tool13 Jun 2024US 2024/0191742 A1Caterpillar Inc.
Most cited
By later US patents
- Apparatus for providing a load on a bearing, the bearing having an inner race mounted to a shaft and the bearing retained by a nut75US 7,389,579 B22008
- Axle nut41US 8,961,090 B22015
- Pre-tensioning device for fastening elements and method for pre-tensioning a fastening element36US 5,772,378 AKvaerner Tamturbine Oy · 1998
- Methods for preloading a bearing35US 8,359,733 B22013
- Lock nut system32US 9,200,673 B22015