F41A 3/00
Breech mechanisms
Official title: Breech mechanisms, e.g. locks
F41A3/00 (Breech mechanisms) appears on 2,402 US grants and 2,033 published applications in this corpus.
Search patents in F41A- Granted patents
- 2,402
- Published applications
- 2,033
- Assignees
- 652
- Inventors
- 2,416
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 33 | 0 |
| 1977 | 25 | 0 |
| 1978 | 10 | 0 |
| 1979 | 10 | 0 |
| 1980 | 11 | 0 |
| 1981 | 13 | 0 |
| 1982 | 16 | 0 |
| 1983 | 14 | 0 |
| 1984 | 21 | 0 |
| 1985 | 12 | 0 |
| 1986 | 20 | 0 |
| 1987 | 26 | 0 |
| 1988 | 14 | 0 |
| 1989 | 12 | 0 |
| 1990 | 20 | 0 |
| 1991 | 21 | 0 |
| 1992 | 17 | 0 |
| 1993 | 8 | 0 |
| 1994 | 10 | 0 |
| 1995 | 15 | 0 |
| 1996 | 17 | 0 |
| 1997 | 19 | 0 |
| 1998 | 22 | 0 |
| 1999 | 23 | 0 |
| 2000 | 8 | 0 |
| 2001 | 19 | 3 |
| 2002 | 15 | 16 |
| 2003 | 26 | 15 |
| 2004 | 16 | 15 |
| 2005 | 13 | 23 |
| 2006 | 10 | 21 |
| 2007 | 25 | 22 |
| 2008 | 19 | 20 |
| 2009 | 16 | 27 |
| 2010 | 36 | 52 |
| 2011 | 44 | 55 |
| 2012 | 50 | 62 |
| 2013 | 58 | 50 |
| 2014 | 89 | 106 |
| 2015 | 100 | 108 |
| 2016 | 118 | 116 |
| 2017 | 118 | 157 |
| 2018 | 157 | 146 |
| 2019 | 161 | 127 |
| 2020 | 157 | 148 |
| 2021 | 158 | 141 |
| 2022 | 117 | 133 |
| 2023 | 146 | 131 |
| 2024 | 123 | 115 |
| 2025 | 112 | 124 |
| 2026 | 82 | 100 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- F41A 3/64Mounting of breech-blocks1,756
- F41A 3/12Bolt action, i.e. the main breech opening movement being parallel to the858
- F41A 3/02Block action, i.e. the main breech opening movement being transverse to the118
- F41A 3/58Breakdown breech mechanisms88
- F41A 3/62Breech mechanisms: using combustion gas pressure for adding to the mechanical locking23
- F41A 3/60Breech mechanisms for guns having two or more barrels21
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