F16B 21/02
Releasable fastening devices locking by rotation
Official title: Releasable fastening devices locking by rotation (with snap-action F16B21/06; studs or coupling pins with resilient protrusions F16B21/08)
F16B21/02 (Releasable fastening devices locking by rotation) appears on 922 US grants and 911 published applications in this corpus.
Search patents in F16B- Granted patents
- 922
- Published applications
- 911
- Assignees
- 640
- Inventors
- 1,882
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 10 | 0 |
| 1977 | 6 | 0 |
| 1978 | 5 | 0 |
| 1979 | 2 | 0 |
| 1980 | 9 | 0 |
| 1981 | 6 | 0 |
| 1982 | 11 | 0 |
| 1983 | 9 | 0 |
| 1984 | 10 | 0 |
| 1985 | 4 | 0 |
| 1986 | 6 | 0 |
| 1987 | 12 | 0 |
| 1988 | 6 | 0 |
| 1989 | 12 | 0 |
| 1990 | 7 | 0 |
| 1991 | 14 | 0 |
| 1992 | 8 | 0 |
| 1993 | 8 | 0 |
| 1994 | 15 | 0 |
| 1995 | 9 | 0 |
| 1996 | 7 | 0 |
| 1997 | 10 | 0 |
| 1998 | 6 | 0 |
| 1999 | 5 | 0 |
| 2000 | 6 | 0 |
| 2001 | 11 | 2 |
| 2002 | 9 | 12 |
| 2003 | 20 | 20 |
| 2004 | 12 | 17 |
| 2005 | 12 | 29 |
| 2006 | 15 | 19 |
| 2007 | 12 | 32 |
| 2008 | 15 | 13 |
| 2009 | 13 | 22 |
| 2010 | 10 | 21 |
| 2011 | 14 | 37 |
| 2012 | 26 | 28 |
| 2013 | 23 | 30 |
| 2014 | 28 | 36 |
| 2015 | 31 | 45 |
| 2016 | 38 | 36 |
| 2017 | 31 | 43 |
| 2018 | 33 | 50 |
| 2019 | 48 | 54 |
| 2020 | 57 | 65 |
| 2021 | 53 | 58 |
| 2022 | 40 | 53 |
| 2023 | 47 | 67 |
| 2024 | 51 | 46 |
| 2025 | 41 | 46 |
| 2026 | 29 | 30 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Rotary positioning device22 Sep 2026US 12,742,468 B2Hanwit Precision Industries Ltd.
- Quarter turn retainer15 Sep 2026US 12,736,079 B2Illinois Tool Works Inc.
- Cam for a base for transport25 Aug 2026US 12,716,438 B2CABKA Group GmbH
- Fastening apparatus25 Aug 2026US 12,716,445 B2Illinois Tool Works Inc.
- Shaft coupling25 Aug 2026US 12,716,456 B2Agilent Technologies, Inc.
- Fastening structure1 Oct 2026US 2026/0298275 A1Fivetech Technology Inc.
- Closure for connecting workpieces1 Oct 2026US 2026/0298276 A1Anemo Engineering BV
- Fasteners with low profile heads for scaffolding and formwork assemblies24 Sep 2026US 2026/0286725 A1
- Fastening arrangement, component structure with the fastening arrangement as well as associated fastening method17 Sep 2026US 2026/0276019 A1
- Twist-Lock Fixings10 Sep 2026US 2026/0266323 A1HellermannTyton Corporation
Most cited
By later US patents
- Ultrasonic tool479US 5,318,570 AAdvanced Osseous Technologies, Inc. · 1994
- Top-entry rod retainer328US 5,346,493 AAcroMed Corporation · 1994
- Top-entry rod retainer265US 5,257,993 AAcroMed Corporation · 1993
- Portable fastening device159US 4,419,794 ARepco Limited · 1983
- Ground engaging tool system150US 7,762,015 B2Caterpillar Inc. · 2010