Interchangeable Rear Sight Notch Insert for Firearm Adaptability
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Solution Overview
Problem
Conventional firearm rear sights are inflexible, as the notch size cannot be easily modified, leading to inaccurate shot placement due to wear and tear from frequent installation and removal, and they do not accommodate varying target distances and lighting conditions effectively.
Innovation Solution
A rear sight design featuring a removable and interchangeable notch insert system, allowing users to quickly switch between different notch dimensions and shapes, which can be easily installed and removed without tools, enabling adaptation to various shooting conditions and preferences.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the rear sight notch is machined into the metal sight, then the notch provides a fixed and stable sighting reference, but it cannot be quickly modified or changed to adapt to different shooting conditions
Solution Approach 1:
The rear sight is divided into two separate components: a base sight body and a removable notch insert. The insert contains the notch and can be independently removed and replaced with different inserts having various notch sizes and shapes. This segmentation allows the sighting system to adapt to different shooting conditions without redesigning the entire sight structure.
Solution Approach 2:
The base sight body is designed with a universal interface that can accommodate multiple types of notch inserts. A single sight base can hold various inserts with different notch configurations (wide, narrow, high, low, different shapes), making the system multi-functional and adaptable to different target distances, lighting conditions, and shooter preferences.
2Adaptability or versatility
If the rear sight is removed and reinstalled to modify the notch, then the notch size can be changed, but the accumulative wearing of the fitted parts occurs, altering the mating surfaces and causing the sight to move or walk
Solution Approach 1:
By separating the notch function into a removable insert, the patent allows notch modification without removing the entire sight from the firearm. The insert can be easily removed from the sight base and replaced with a different insert, avoiding repeated installation and removal of the sight assembly that would cause wear to the mating surfaces between the sight and firearm.
Solution Approach 2:
The design allows the user to discard (remove) a worn or inappropriate notch insert and replace it with a new or different insert. The insert itself can be easily discarded and replaced without affecting the permanent sight base, which remains securely mounted on the firearm and does not accumulate wear from frequent removals.
3Area of stationary object
If the rear notch is machined to a larger size, then the opening is increased for better visibility, but the process requires securing in a vice or milling machine and refishing, bluing and reinstalling
Solution Approach 1:
The notch is segmented into a separate insert component that is pre-manufactured with the desired notch size and shape. Instead of machining the notch in the field or workshop, users simply remove the existing insert and install a pre-made insert with the appropriate notch dimensions. This eliminates the time-consuming processes of securing the sight in a vice, milling, refishing, and bluing.
Solution Approach 2:
Different notch inserts are pre-manufactured with various notch sizes, shapes, and configurations before being installed on the sight base. Users can select and install the appropriate pre-prepared insert for their specific shooting needs without having to perform any machining or modification work at the time of use.
4Ease of manufacture
If a single rear sight design is manufactured, then production is simplified, but it cannot accommodate different user preferences, shooting styles, and target distances
Solution Approach 1:
The sight system is segmented into a standard base unit and variable inserts. The base sight can be manufactured once with a universal interface, while separate inserts are produced in different configurations. This allows the main production line to remain simple while offering customization through the interchangeable insert component.
Solution Approach 2:
A single universal sight base design can accommodate multiple types of inserts, allowing one base model to serve multiple purposes. Manufacturers can produce one standard base and offer a line of compatible inserts with different notch characteristics, enabling the same base to adapt to different user preferences and shooting applications without requiring multiple base designs.
Data Source
AI summary
A rear sight is provided for use on a firearm. The rear sight includes a changeable and removable rear sight notch insert. The rear sight further includes a rear sight blade having a cavity configured to receive the changeable, removable rear sight notch insert. The changeable, removable rear sight notch insert includes one or more tabs to facilitate insertion or removal of the rear sight notch insert into or out of the cavity. The rear sight notch inserts are variable in notch width, notch depth, and notch shape.