AK47 Rear Sight Device Integrating Recoil Assembly
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Solution Overview
Problem
The original AK47 rifle's short sight radius due to its tangent notch sight configuration results in inaccuracies when aligning front and rear sights, leading to human error in target engagement.
Innovation Solution
A rear gun sight device with a tee-shaped base that integrates into the rifle's recoil system, utilizing the tee-shaped slot in the receiver to increase the sight radius by approximately eight inches, while maintaining the functionality of the recoil assembly and providing adjustable windage and elevation components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the original tangent notch sight is mounted on the barrel ahead of the receiver, then the rifle maintains its original configuration and simplicity, but the sight radius remains very short resulting in large inaccuracies when engaging the intended target
Solution Approach 1:
The patent moves the rear sight from the traditional barrel-mounted position to the receiver cover, utilizing the vertical dimension and rearward position on the receiver. This dimensional change extends the sight radius from approximately 10 inches to nearly 18 inches, dramatically improving sight alignment accuracy while maintaining integration with the original rifle structure through the tee-shaped slot interface
Solution Approach 2:
The receiver cover serves multiple functions: it protects the receiver internally and now also provides a stable mounting surface for the rear sight assembly. By utilizing the existing receiver cover structure and its attachment to the receiver, the patent achieves multi-functionality without adding separate mounting structures, thus improving accuracy without proportionally increasing complexity
2Measurement precision
If the receiver cover is used to mount the sight component assembly, then the sight radius is increased, but the mounting becomes unstable for precision mounting a rear sight
Solution Approach 1:
The sight assembly is divided into distinct functional components: the sight base that interfaces with the tee-shaped slot in the receiver cover, the sight body containing the rear sight aperture, and the retaining mechanism. This segmentation allows each component to be optimized for its specific function - the base provides stable mounting, while the sight body provides precise alignment
Solution Approach 2:
The sight base acts as an intermediary element between the receiver cover and the sight components. It features a tee-shaped configuration that fits into the corresponding slot in the receiver cover, providing a stable, precision-machined interface that translates the receiver cover's mounting surface into a stable platform for the sight components
3Measurement precision
If a rear sight is mounted to increase sight radius, then accuracy improves, but the mounting structure may restrict the function of the AK47's operating system
Solution Approach 1:
The sight base is integrated with the recoil spring guide rod assembly, combining the sight mounting function with the existing recoil operation mechanism. The tee-shaped base merges with the guide rod structure, allowing the recoil spring to compress and expand while the sight remains firmly mounted, thus achieving both improved accuracy and maintained operational versatility
Solution Approach 2:
The integrated base structure serves dual functions: it provides a stable mounting platform for the rear sight while simultaneously serving as part of the recoil spring guide rod assembly. This multi-functionality ensures that the sight mounting does not interfere with the rifle's operating system, maintaining full adaptability of the recoil mechanism
Data Source
AI summary
A rear gun sight device for a rifle having a receiver and cover, the receiver having a tee shaped slot on the top rear of the receiver. This slot is designed to accept and retain a recoil assembly. The invention replaces the rear portion of the recoil assembly allowing the invention to perform the function of the original rear portion of the recoil assembly as well as provide a rear sight for the rifle. This invention is comprised of a sight base provided with a tee shaped base to engage the tee shaped slot in the top rear trunion of the rifle's receiver, a spring boss to accept the end of the recoil spring when assembled in the recoil assembly, a spring guide to guide the recoil spring, a sight component assembly comprised of windage and elevation adjustment components as well as aperture sight components, and cover retention elements.