Kinetic Delay Firearm Action for Reduced Felt Recoil
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Solution Overview
Problem
Existing firearms transfer a significant amount of recoil energy to the shooter, causing discomfort and reducing the ability to control the gun during rapid firing, particularly in manually operated and blowback guns.
Innovation Solution
A kinetic delay system is implemented in the firearm design, where the bolt and barrel are longitudinally separated from the bolt carrier, delaying the impact and extending the recoil impulse, thereby reducing total recoil energy and increasing the time of energy transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manually reloading guns (bolt action, single shot, pump action, break action) are used, then the gun structure is simple and reliable, but the felt recoil is high for a given load
Solution Approach 1:
The bolt is separated into two independent components: a bolt body and a bolt carrier. The bolt body contains the firing mechanism and is connected to the trigger, while the bolt carrier is driven by recoil energy to cycle the action. This segmentation allows the bolt body to remain stationary during firing, absorbing recoil energy through the delayed impact mechanism, thereby reducing felt recoil while maintaining structural reliability
Solution Approach 2:
The bolt carrier acts as an intermediary between the barrel and the bolt body. It absorbs the initial recoil impulse and transfers energy to the bolt body through a controlled delayed impact. This intermediary mechanism extends the duration of energy transfer and reduces the peak recoil force transmitted to the shooter, while still enabling reliable cycling of the action
2Object-affected harmful factors
If gas operated semi-automatic and fully automatic guns are used, then the total energy transferred to the shooter is reduced and the time to transfer energy is increased, but the device complexity increases
Solution Approach 1:
The kinetic delay system is a passive, self-service mechanism that uses the natural recoil energy from firing to drive the cycling action. The bolt carrier is propelled rearward by direct impact from the barrel, and the delayed impact with the bolt body automatically cycles the action without requiring external gas systems, springs, or complex operating mechanisms. This achieves reduced felt recoil with minimal added complexity
3Object-affected harmful factors
If short and long recoil guns and blowback guns are used, then the total recoil energy transferred to the shooter is decreased, but the time to transfer recoil energy is not sufficiently extended
Solution Approach 1:
The bolt body is positioned to receive a delayed impact from the bolt carrier, creating a cushioning effect. The bolt carrier absorbs the initial recoil impulse and then impacts the bolt body after a controlled delay, extending the duration of energy transfer. This beforehand cushioning mechanism increases the time over which recoil energy is dissipated, further reducing felt recoil while maintaining cycling functionality
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The kinetic delay system effectively reduces felt recoil by distributing the recoil energy over time, enhancing shooter control and comfort during rapid firing.
Implementation Method 1
there is a delay between firing the gun and the bolt longitudinally impacting the bolt carrier to cycle the gun
Implementation Method 2
the barrel longitudinally impacts the bolt carrier before the barrel longitudinally impacts a barrel stop of the gun when the gun is fired
Implementation Method 3
use recoil energy from firing the gun to cycle the action of the gun
Data Source
AI summary
A gun includes a kinetic delay to reduce total recoil energy transferred to a shooter and extend the time of the recoil impulse to reduce felt recoil and increase controllability. In one embodiment, a bolt of a gun is longitudinally separated from a bolt carrier of the gun such that there is a delay between firing the gun and the bolt longitudinally impacting the bolt carrier. In one embodiment, the barrel is longitudinally separated from the bolt carrier such that the barrel longitudinally impacts the bolt carrier before the barrel longitudinally impacts a barrel stop of the gun when the gun is fired. In one embodiment, a locking bolt includes a bolt pin extending through a bolt pin slot in the bolt carrier and the bolt pin slot is elongated such that the bolt pin does not contact either end of the bolt pin slot when the gun is cycled.