Rectangular Barrel with Teething Surface for Disk Bullet Stabilization
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Solution Overview
Problem
Conventional firearms with cylindrical barrels face inefficiencies due to gas leakage and bullet distortion, particularly when using disk-shaped bullets, as they lack a suitable surface for engagement and stabilization, leading to reduced accuracy and penetration.
Innovation Solution
A firearm with a rectangular barrel featuring a high friction teething surface, where teeth along one short side of the internal bore engage and stabilize a disk-shaped bullet, enhancing rotation and stability during flight.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If a smooth cylindrical barrel is used, then the bullet can pass through easily, but gas leakage occurs and bullet distortion increases
Solution Approach 1:
The patent applies local quality by creating a non-smooth teething surface with teeth projections only on specific portions of the barrel interior, rather than making the entire barrel surface rough. This localized application of surface irregularities provides gas sealing and bullet engagement functionality while maintaining smoother areas that reduce resistance to bullet passage.
Solution Approach 2:
The barrel interior surface is segmented into distinct regions: smooth portions that allow easy bullet passage and non-smooth teething portions with teeth projections that provide engagement and sealing. This segmentation allows different surface characteristics to perform different functions within the same barrel structure.
2Stability of the object's composition
If a non-smooth teething surface is added to engage the bullet, then bullet stabilization and rotation improve, but manufacturing complexity increases
Solution Approach 1:
The patent changes the surface parameter of the barrel interior from smooth to non-smooth by adding teeth projections. This parameter change transforms the barrel surface to provide bullet engagement and stabilization capabilities while the teeth are configured to be manufactured using conventional processes.
Solution Approach 2:
The teeth projections are applied locally to specific portions of the barrel interior rather than the entire surface, which reduces the overall manufacturing complexity compared to making the whole barrel surface non-smooth, while still achieving the required bullet stabilization function.
3Stability of the object's composition
If conventional cylindrical rifling is used, then bullet spin is achieved, but disk-shaped bullets cannot be properly stabilized
Solution Approach 1:
The patent employs asymmetry by configuring the teeth projections with specific geometric characteristics including pitch, depth, and angular orientation that are tailored for disk-shaped bullets. The teeth are arranged to engage the flat surfaces of disk bullets differently than conventional rifling engages round bullets, providing appropriate spin and stabilization for the asymmetric disk shape.
Solution Approach 2:
The patent changes the geometric parameters of the barrel interior structure from conventional rifling to teeth projections with specific pitch, depth, and angular characteristics. These parameter changes are optimized for engaging and stabilizing disk-shaped bullets, providing the necessary spin and gyroscopic stability for this unique projectile geometry.
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 high friction teething surface improves firing efficiency by stabilizing and rotating the disk-shaped bullet, reducing gas leakage and bullet distortion, resulting in increased accuracy and penetration similar to a rotating circular blade.
Implementation Method 1
The barrel has a non-smooth high friction interior barrel teething surface
Data Source
AI summary
A firearm is provided that includes a receiver, a stock, an elongated barrel and a muzzle. The barrel extends from the receiver to the muzzle and has a rectangular internal bore extending from the receiver to the muzzle. The internal bore has two short sides and two long sides. A plurality of teeth extends along one of the short sides within the internal bore. The internal bore has an interior barrel surface that is a high friction surface.