F16B 31/04
Screwed connections specially modified in view of tensile load: for maintaining a
Official title: for maintaining {a} tensile load
F16B31/04 (Screwed connections specially modified in view of tensile load: for maintaining a) appears on 307 US grants and 249 published applications in this corpus.
Search patents in F16B- Granted patents
- 307
- Published applications
- 249
- Assignees
- 183
- Inventors
- 433
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 3 | 0 |
| 1978 | 4 | 0 |
| 1979 | 0 | 0 |
| 1980 | 3 | 0 |
| 1981 | 4 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 5 | 0 |
| 1987 | 2 | 0 |
| 1988 | 4 | 0 |
| 1989 | 7 | 0 |
| 1990 | 6 | 0 |
| 1991 | 5 | 0 |
| 1992 | 4 | 0 |
| 1993 | 3 | 0 |
| 1994 | 6 | 0 |
| 1995 | 3 | 0 |
| 1996 | 7 | 0 |
| 1997 | 4 | 0 |
| 1998 | 4 | 0 |
| 1999 | 7 | 0 |
| 2000 | 4 | 0 |
| 2001 | 6 | 0 |
| 2002 | 4 | 1 |
| 2003 | 4 | 6 |
| 2004 | 4 | 7 |
| 2005 | 3 | 4 |
| 2006 | 3 | 5 |
| 2007 | 5 | 9 |
| 2008 | 3 | 9 |
| 2009 | 3 | 9 |
| 2010 | 6 | 9 |
| 2011 | 3 | 8 |
| 2012 | 4 | 3 |
| 2013 | 14 | 12 |
| 2014 | 5 | 9 |
| 2015 | 9 | 11 |
| 2016 | 7 | 11 |
| 2017 | 10 | 16 |
| 2018 | 11 | 14 |
| 2019 | 20 | 20 |
| 2020 | 16 | 13 |
| 2021 | 14 | 20 |
| 2022 | 12 | 13 |
| 2023 | 15 | 13 |
| 2024 | 18 | 12 |
| 2025 | 10 | 6 |
| 2026 | 4 | 9 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Threaded fastener18 Aug 2026US 12,710,069 B2Goodrich Actuation Systems Limited
- Fastener assembly sensor unit2 Jun 2026US 12,644,482 B2Salunda Limited
- Method and system for detecting tightness state of bolt or nut2 Jun 2026US 12,644,700 B2
- Fastener assembly for a gas turbine engine13 Jan 2026US 12,523,164 B2Rtx Corporation
- Tie rod-locking nut assembly and gas turbine including same14 Oct 2025US 12,442,300 B2Doosan Enerbility Co., Ltd.
- Fastener assembly sensor unit17 Sep 2026US 2026/0276022 A1Salunda Limited
- Fastener assembly and connector device for interconnecting multiple objects13 Aug 2026US 2026/0235152 A1
- Apparatus for mechanically connecting a component to a gantry28 May 2026US 2026/0146634 A1Siemens Healthineers AG
- Fastener assembly for a gas turbine engine21 May 2026US 2026/0139612 A1Rtx Corporation
- Anti-loosening wedge washer device23 Apr 2026US 2026/0110326 A1Geo Sekkei Corporation
Most cited
By later US patents
- Dynamic tension bone screw218US 4,959,064 ABoehringer Mannheim GmbH · 1990
- Controlled preload, self-retracting captive fastener assembly79US 4,720,223 ARexnord Inc. · 1988
- Tightening device for threaded connectors75US 4,927,305 A1990
- 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
- Graduated-load spring washer system for screws and threaded fasteners66US 4,958,970 AThe United States of America as represented by the Secretary of the Navy · 1990