F16B 31/02
Screwed connections specially modified in view of tensile load: for indicating the
Official title: for indicating {the attainment of a particular tensile load} or limiting tensile load {(apparatus for, or method of, determining value of torque or twisting moment for tightening a nut or other member similarly stressed G01L5/24)}
F16B31/02 (Screwed connections specially modified in view of tensile load: for indicating the) appears on 897 US grants and 794 published applications in this corpus.
Search patents in F16B- Granted patents
- 897
- Published applications
- 794
- Assignees
- 548
- Inventors
- 1,660
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 12 | 0 |
| 1977 | 11 | 0 |
| 1978 | 8 | 0 |
| 1979 | 13 | 0 |
| 1980 | 7 | 0 |
| 1981 | 9 | 0 |
| 1982 | 7 | 0 |
| 1983 | 8 | 0 |
| 1984 | 7 | 0 |
| 1985 | 17 | 0 |
| 1986 | 11 | 0 |
| 1987 | 14 | 0 |
| 1988 | 12 | 0 |
| 1989 | 18 | 0 |
| 1990 | 21 | 0 |
| 1991 | 14 | 0 |
| 1992 | 17 | 0 |
| 1993 | 17 | 0 |
| 1994 | 7 | 0 |
| 1995 | 12 | 0 |
| 1996 | 10 | 0 |
| 1997 | 12 | 0 |
| 1998 | 8 | 0 |
| 1999 | 14 | 0 |
| 2000 | 11 | 0 |
| 2001 | 17 | 2 |
| 2002 | 8 | 7 |
| 2003 | 7 | 19 |
| 2004 | 8 | 21 |
| 2005 | 7 | 13 |
| 2006 | 15 | 22 |
| 2007 | 12 | 16 |
| 2008 | 16 | 21 |
| 2009 | 6 | 25 |
| 2010 | 9 | 24 |
| 2011 | 17 | 25 |
| 2012 | 18 | 23 |
| 2013 | 26 | 36 |
| 2014 | 33 | 34 |
| 2015 | 30 | 46 |
| 2016 | 27 | 35 |
| 2017 | 29 | 40 |
| 2018 | 39 | 50 |
| 2019 | 40 | 69 |
| 2020 | 37 | 48 |
| 2021 | 47 | 38 |
| 2022 | 37 | 46 |
| 2023 | 28 | 41 |
| 2024 | 37 | 39 |
| 2025 | 30 | 28 |
| 2026 | 20 | 26 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- F16B 31/021By means of a frangible part310
- F16B 31/028With a load-indicating washer or washer assembly207
- F16B 31/025With a gauge pin in a longitudinal bore in the body of72
- F16B 2031/022Using an ultrasonic transducerIndexing code50
- F16B 31/027With a bolt head causing the fastening or the unfastening tool to33
- F16B 31/024With the bottom of the nut or of the head of the16
Recent patents
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- Mounting device28 Jul 2026US 12,693,098 B2Knds Deutschland GmbH & Co. KG
- Fastener Tightening Control System in an Assembly and Method for Controlling the Tightening of a Fastener in an Assembly8 Oct 2026US 2026/0307184 A1Lisi Aerospace
- Washer for measuring force and distributing force when connecting a connection means to a part to be connected1 Oct 2026US 2026/0298743 A1Altosens GmbH
- Blind fastening device which can be re-tightened after installation, and method for installation of a blind fastening device of this type24 Sep 2026US 2026/0286996 A1Airbus Operations GmbH
- Fastener assembly sensor unit17 Sep 2026US 2026/0276022 A1Salunda Limited
- Breakaway aircraft structures27 Aug 2026US 2026/0249974 A1
Most cited
By later US patents
- Controlled torque connector assembly265US 4,575,274 AGilbert Engineering Company, Inc. · 1986
- Compression pressure indicator229US 4,655,159 ARaychem Corporation · 1987
- Torque-setting, tamper-resistant fastener and method and tool for use with same115US 7,066,062 B22006
- Mechanical roof fastener113US 4,744,187 AThe Firestone Tire & Rubber Company · 1988
- Load sensing system including RFID tagged fasteners109US 7,412,898 B1Disney Enterprises, Inc. · 2008