Rotating En Bloc Clip for Pump-Action Firearm Reloading

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Solution Overview

Problem

Traditional pump-action firearms and semi-automatic rifles eject spent cartridge casings, which can lead to reduced ammunition capacity, increased manufacturing costs, and complexity in reloading, while also potentially causing reliability issues due to angled cartridge feeding.

Innovation Solution

A pump-action firearm design utilizing a removable, rotating en bloc rotary ammunition clip that retains spent casings and uses a sliding bolt mechanism to load cartridges without a spring-driven magazine, allowing for easier reloading and improved reliability by rotating cartridges in circumferentially positioned sockets, eliminating the need for a feed ramp and enhancing safety and durability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Quantity of substance

If traditional pump-action firearms eject spent cartridge casings, then the firearm can maintain operational clarity, but ammunition capacity is reduced and reloading becomes more complex

Engineering Contradiction:

Improveammunition capacityVSAvoidrel reloader

Core Design Contradiction:

Quantity of substanceVSEase of operation

Solution Approach 1:

The ammunition feeding system is segmented into a removable rotating clip containing multiple cartridge sockets. This allows the ammunition to be loaded in a compact rotating unit rather than individual cartridges, increasing capacity while simplifying reloading to a single clip insertion operation.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Instead of ejecting spent casings as in traditional designs, this invention inverts the approach by retaining spent casings in the rotating clip. The spent casings remain in the clip after firing, and the entire clip is removed and replaced as a unit, eliminating ejection complexity.

Inventive Principle:

Principle #13The other way round (Inversion)

2Extent of automation

If a spring-driven magazine is used, then automatic ammunition advancement is achieved, but device complexity and manufacturing cost increase

Engineering Contradiction:

Improveautomatic ammunition advancementVSAvoidmanufacturing complexity

Core Design Contradiction:

Extent of automationVSDevice complexity

Solution Approach 1:

The spring-driven magazine mechanism is completely removed from the design. Ammunition advancement is achieved through manual rotation of the clip to the next position, extracting the complex spring mechanism while maintaining functional ammunition feeding.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The rotating clip system allows the operator to manually advance ammunition by rotating the clip to the next cartridge position. This self-service approach eliminates the need for automatic spring-driven advancement, reducing complexity while maintaining functionality.

Inventive Principle:

Principle #25Self-service

3Quantity of substance

If cartridges are fed at an angle from a magazine, then ammunition capacity is increased, but reliability decreases due to asymmetric support

Engineering Contradiction:

Improveammunition capacityVSAvoidcartridge feeding reliability

Core Design Contradiction:

Quantity of substanceVSReliability

Solution Approach 1:

The design uses symmetric cartridge support within the rotating clip, with each cartridge fully supported in its socket. This symmetric support contrasts with angled magazine feeding and eliminates the reliability issues associated with asymmetric cartridge positioning and feed ramps.

Inventive Principle:

Principle #4Asymmetry

Solution Approach 2:

The rotating clip acts as an intermediary between the operator and the chamber. Cartridges are held in the clip and transferred to the chamber through controlled rotation and bolt movement, providing stable symmetric support throughout the feeding process and eliminating the need for angled feed ramps.

Inventive Principle:

Principle #24Intermediary (Mediator)

4Reliability

If spent cartridge casings are ejected, then the firing chamber is cleared, but manufacturing cost and device complexity increase

Engineering Contradiction:

Improvechamber clearingVSAvoidmanufacturing cost

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The functions of chamber clearing and ammunition feeding are merged into the rotating clip mechanism. When the clip is rotated to the next position, the spent casing remains in the clip while the new cartridge is positioned for chambering, combining multiple functions into a single simple mechanism.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

Instead of ejecting spent casings individually, the entire rotating clip containing spent casings is removed and discarded as a unit. The operator then inserts a fresh loaded clip, recovering the system in a single operation rather than through complex ejection mechanisms.

Inventive Principle:

Principle #34Discarding and recovering

Data Source

PatentUS11624572B2Pump-action firearm

Publication Date: 2023.04.11 BALLISTICS ARTS GRP LLC

AI summary

Provided is a pump-action firearm having a frame. A barrel having a chamber is supported on the frame. A rotating ammunition clip has a plurality of circumferentially spaced cartridge sockets and is removably supported by the frame. A bolt is manually slidably cycled between in-battery and retracted positions. The bolt is moveable into a socket to push a cartridge out of the socket and into the chamber to the in-battery position and retractable to extract the cartridge from the chamber and back into the socket.