Patent ID: 10663252

Abstract:
A shoulder-fired firearm primary and secondary recoil attenuator mounts on the butt of a shoulder-fired firearm to absorb both the primary and secondary recoil impulses with distinct spring rates and viscoelastic hysteresis. The attenuator may include a mount plate attachable to a butt of a shoulder-fired firearm. A shoulder plate may be disposed in a spaced-apart, parallel relationship with the mount plate. At least one damper may be disposed between the mount plate and the shoulder plate. The at least one damper may include a viscoelastic copolymer elastomer material having a hollow body elastomer construction. The viscoelastic copolymer elastomer material may be shape-engineered to exhibit time-dependent strain. Accordingly, the at least one damper may have distinct spring rates in response to a primary recoil impulse caused by acceleration of a bullet traveling through a firearm barrel and a secondary recoil impulse caused by ejection of the gases exiting the firearm barrel.