F16B 31/00
Screwed connections specially modified in view of tensile load
Official title: Screwed connections specially modified in view of tensile load; Break-bolts (shape of thread {F16B33/02; in couplings F16D9/00})
F16B31/00 (Screwed connections specially modified in view of tensile load) appears on 1,286 US grants and 1,121 published applications in this corpus.
Search patents in F16B- Granted patents
- 1,286
- Published applications
- 1,121
- Assignees
- 733
- Inventors
- 2,293
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 18 | 0 |
| 1977 | 14 | 0 |
| 1978 | 14 | 0 |
| 1979 | 13 | 0 |
| 1980 | 13 | 0 |
| 1981 | 13 | 0 |
| 1982 | 8 | 0 |
| 1983 | 10 | 0 |
| 1984 | 9 | 0 |
| 1985 | 18 | 0 |
| 1986 | 16 | 0 |
| 1987 | 17 | 0 |
| 1988 | 17 | 0 |
| 1989 | 25 | 0 |
| 1990 | 28 | 0 |
| 1991 | 21 | 0 |
| 1992 | 24 | 0 |
| 1993 | 23 | 0 |
| 1994 | 15 | 0 |
| 1995 | 15 | 0 |
| 1996 | 17 | 0 |
| 1997 | 20 | 0 |
| 1998 | 13 | 0 |
| 1999 | 21 | 0 |
| 2000 | 15 | 0 |
| 2001 | 24 | 3 |
| 2002 | 12 | 9 |
| 2003 | 13 | 29 |
| 2004 | 12 | 29 |
| 2005 | 12 | 17 |
| 2006 | 19 | 29 |
| 2007 | 17 | 26 |
| 2008 | 20 | 31 |
| 2009 | 10 | 37 |
| 2010 | 18 | 39 |
| 2011 | 22 | 36 |
| 2012 | 23 | 32 |
| 2013 | 41 | 52 |
| 2014 | 44 | 48 |
| 2015 | 43 | 64 |
| 2016 | 36 | 52 |
| 2017 | 46 | 65 |
| 2018 | 56 | 66 |
| 2019 | 63 | 88 |
| 2020 | 57 | 65 |
| 2021 | 62 | 57 |
| 2022 | 53 | 63 |
| 2023 | 45 | 57 |
| 2024 | 56 | 57 |
| 2025 | 39 | 34 |
| 2026 | 26 | 36 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- F16B 31/02Screwed connections specially modified in view of tensile load: for indicating the897
- F16B 31/04Screwed connections specially modified in view of tensile load: for maintaining a307
- F16B 31/06Screwed connections specially modified in view of tensile load: having regard to45
- F16B 31/005Breakbolts loosening due to the action of an explosive charge30
- F16B 31/007Break-bolts loosening at high temperature15
- F16B 2031/002Breakbolts loosening due to an electromagnetic actionIndexing code1
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Most cited
By later US patents
- Controlled torque connector assembly265US 4,575,274 AGilbert Engineering Company, Inc. · 1986
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