Roller and bearing delayed firearm operating systems
US-12584701-B2 · Mar 24, 2026 · US
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using combustion gas pressure for adding to the mechanical locking action, or for delaying breech opening movement
using combustion gas pressure for adding to the mechanical locking action, or for delaying breech opening movement · Cooperative Patent Classification (CPC)
Engines, pumps, lighting, heating, and mechanical systems.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | F41A3/62 |
| Official title | using combustion gas pressure for adding to the mechanical locking action, or for delaying breech opening movement |
| Display label | using combustion gas pressure for adding to the mechanical locking action, or for delaying breech opening movement |
| Total patents | 7 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity appears to be declining based on the most recent years.
| Year | Patents |
|---|---|
| 2022 | 1 |
| 2023 | 2 |
| 2024 | 2 |
| 2025 | 1 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Bearing delayed firearm operating systems
US-2025271228-A1 · Aug 28, 2025 · US
Roller and bearing delayed firearm operating systems
US-2024344788-A1 · Oct 17, 2024 · US
Roller and bearing delayed firearm operating systems
US-12025391-B2 · Jul 2, 2024 · US
Roller and bearing delayed firearm operating systems
US-2023108620-A1 · Apr 6, 2023 · US
Roller and bearing delayed firearm operating systems
US-11543195-B2 · Jan 3, 2023 · US
Roller and bearing delayed firearm operating systems
US-2022003512-A1 · Jan 6, 2022 · US