Self-locking bolt system not requiring an external surface to lock to
US11549769B1 · kind B1 · utility
Inventor
Key dates
| Filing date | Jul 30, 2020 |
| Grant date | Jan 10, 2023 |
| Priority date | — |
| Expiry date | Jul 31, 2040 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF41A3/82
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A self-locking bolt assembly is provided having a short stroke allowing the assembly to be contained within the receiver. The assembly has a base plate, a recoil rod with a spring, a bolt body, a bolt and a locking mechanism. The bolt is internally (i.e. lockable onto itself) lockable when the bolt is in battery. The locking mechanism, for example, can be a roller bearing, a lever lock, a cam rotary lock or a roller. The locking mechanism engages to recoil rod and prevents rearward motion of the bolt. Blowback and reciprocation of the bolt are temporarily delayed after a shot is fired until after the bolt is unlocked. Rearward movement of the bolt body due to inertia causes the locking mechanism to be disengaged to unlock the bolt and to allow for reciprocation of the bolt.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.