Back to results
US 12,607,425 B2Granted
Opposing force recoil reduction in a firearm
Assignee3D Defense
InventorsDarren J Booth, Steven Clark Butterfield
Life of this patent
Estimating the term…
Abstract
A firearm which provides recoil reduction using the kinetic energy of the hammer to cancel a portion of the bolt's recoil after a round has been fired. After the bolt starts to move rearward in response to the detonation, the hammer's forward kinetic energy is transferred onto the bolt by striking it at the moment the bolt starts to travel rearward or after the bolt has started its rearward motion.
Claims20
A firearm with an opposing force recoil reduction system comprising:
- a barrel with a chamber for holding a round;
- a bolt that moves within an upper housing from a rearward position to a forward position in contact with the barrel;
- a firing pin within the bolt for contacting a primer in the round to fire the round;
- a hammer that moves behind the bolt in the upper housing;
- a trigger assembly with a sear that holds the hammer in a cocked position for firing;
- at least one hammer spring that moves the hammer forward toward the bolt to engage the firing pin and the bolt in response to a user operating the trigger assembly;
- wherein the hammer moves forward to engage the firing pin and detonate the primer to fire the round;
- and
- wherein the hammer in the same forward movement engages and comes in first contact with the bolt as the bolt moves rearward after the primer is detonated and transfers kinetic energy of the hammer to the bolt thereby reducing recoil of the firearm.
6 more elements
A method for reducing recoil in a firearm comprising:
- a. placing the firearm in a cocked state with a hammer held in a rearward position by a sear and a bolt in a forward position against a barrel with a chambered round;
- b. releasing the hammer from the sear in response to a user activating a trigger;
- c. accelerating the hammer in a forward movement by a hammer spring to strike a firing pin in the bolt;
- d. driving the firing pin into a primer of the chambered round to detonate the primer and fire the chambered round;
- and
- e. subsequent to the detonation of the primer, in the same forward movement as striking the firing pin, the hammer striking the bolt for the first time as the bolt moves rearward and transferring kinetic energy of the hammer to the rearward moving bolt.
3 more elements
A method for reducing recoil in a firearm comprising:
- a. placing the firearm in a cocked state with a hammer held in a rearward position by a sear and a bolt in a forward position against a barrel with a chambered round;
- b. releasing the hammer from the sear in response to a user activating a trigger;
- c. accelerating the hammer in a forward movement by a hammer spring to strike a firing pin in the bolt;
- d. driving the firing pin into a primer of the chambered round to detonate the primer and fire the chambered round;
- e. subsequent to the detonation of the primer, in the same forward movement as striking the firing pin, the hammer engages the bolt for the first time as the bolt moves rearward in response to detonation of the primer to transfer kinetic energy of the hammer to the bolt thereby reducing recoil of the firearm;
- and
- f. wherein the bolt and hammer are a shape of a cuboid and a mass of the hammer is at least 50% of a mass of the bolt.
4 more elements
Dependencies are inferred from the claim text.