F41A 3/54
Bolt locks of the unlocked type, i.e. being inertia operated
F41A3/54 (Bolt locks of the unlocked type, i.e. being inertia operated) appears on 93 US grants and 80 published applications in this corpus.
Search patents in F41A- Granted patents
- 93
- Published applications
- 80
- Assignees
- 48
- Inventors
- 119
- Latest grant
- 21 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 3 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 3 | 2 |
| 2004 | 1 | 3 |
| 2005 | 1 | 0 |
| 2006 | 1 | 2 |
| 2007 | 2 | 2 |
| 2008 | 2 | 1 |
| 2009 | 0 | 0 |
| 2010 | 2 | 3 |
| 2011 | 3 | 8 |
| 2012 | 5 | 0 |
| 2013 | 3 | 1 |
| 2014 | 1 | 2 |
| 2015 | 3 | 2 |
| 2016 | 0 | 4 |
| 2017 | 4 | 6 |
| 2018 | 4 | 8 |
| 2019 | 8 | 9 |
| 2020 | 9 | 7 |
| 2021 | 8 | 8 |
| 2022 | 4 | 4 |
| 2023 | 5 | 1 |
| 2024 | 3 | 2 |
| 2025 | 4 | 2 |
| 2026 | 1 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Opposing force recoil reduction in a firearm21 Apr 2026US 12,607,425 B23D Defense
- Firearm30 Dec 2025US 12,510,315 B2
- Ergonomic rifle with a mechanism holder18 Nov 2025US 12,474,134 B2
- Kinetic delay operating system for recoil firearms28 Oct 2025US 12,455,128 B2Eight Holdings LLC
- Firearm with multi-part chamber locking assembly25 Feb 2025US 12,235,063 B2
- Ballistic Multi-Part Chamber Locking Assembly2 Jul 2026US 2026/0185789 A1
- Kinetic delay operating system for recoil firearms9 Apr 2026US 2026/0098694 A1Eight Holdings LLC
- Opposing force recoil reduction in a firearm19 Feb 2026US 2026/0049780 A13D Defense
- Ergonomic rifle with a mechanizm holder30 Oct 2025US 2025/0334367 A1Utas Savunma Sanayi Ve Ticaret Anonim Sirketi
- Kinetic delay operaing system for recoil firearms22 May 2025US 2025/0164200 A1Eight Holdings LLC
Most cited
By later US patents
- Submachine gun having a pistol grip 360 degrees rotative about the barrel55US 4,327,626 A1982
- Gas-operated rifle system55US 5,520,019 AOlympic Arms, Inc. · 1996
- Conversion of firearms to fire reduced-energy ammunition50US 6,625,916 B1SNC Technologies Inc. · 2003
- Gas-operated rifle system49US 5,499,569 AOlympic Arms, Inc. · 1996
- Rebound attenuation device for automatic firearms46US 6,931,978 B1SNC Technologies Inc. · 2005