Shotshell Payload Carrier for Reduced Recoil and Dispersion

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Solution Overview

Problem

Existing shotgun technologies face issues with excessive shot dispersion, low shot velocity, barrel damage due to shot peening, and heavy recoil, which affect the accuracy and effectiveness of shotguns in various applications.

Innovation Solution

The introduction of a payload carrier within the shotshell, featuring one or more longitudinal chambers that align shot pellets in a single file column, helps maintain shot alignment and separation from propellant gases, reducing dispersion and recoil while enhancing velocity.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Quantity of substance

If traditional shotgun shells fire multiple subcaliber projectiles, then the shot disperses broadly after exiting the muzzle, but this causes few or none of the shot elements to strike the intended target with sufficient energy

Engineering Contradiction:

Improvenumber of shot pelletsVSAvoidshot dispersion pattern

Core Design Contradiction:

Quantity of substanceVSMeasurement precision

Solution Approach 1:

The patent segments the shotgun shell into distinct functional zones: a payload carrier containing multiple shot pellets in individual compartments, and a separate sabot carrier. This segmentation allows each shot pellet to be contained and propelled independently, preventing dispersion while maintaining the quantity of projectiles for broad target coverage.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent implements a nested structure where multiple shot pellets are nested within individual compartments of the payload carrier, which is itself nested within the shotgun shell. This nested arrangement keeps shot pellets aligned and contained during propulsion, eliminating broad dispersion while preserving the ability to deliver multiple projectiles to the target.

Inventive Principle:

Principle #7Nested doll (Nesting)

2Speed

If subcaliber projectiles are fired without a payload carrier, then the shot loses velocity rapidly after exiting the muzzle, but this reduces the destructive energy upon target contact

Engineering Contradiction:

Improveshot velocityVSAvoiddestructive energy

Core Design Contradiction:

SpeedVSForce

Solution Approach 1:

The patent merges the payload carrier containing multiple shot pellets with a single sabot carrier, creating a unified propulsion system. This merged structure allows all shot pellets to be propelled together by a single propellant charge, maintaining high velocity and ensuring sufficient destructive energy is delivered to the target upon contact.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The sabot carrier acts as an intermediary between the propellant and the shot pellets, transferring the propulsive force efficiently to maintain velocity. This intermediary structure ensures that shot pellets retain their velocity throughout flight, delivering adequate destructive energy when they strike the target.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Quantity of substance

If multiple shot pellets are fired simultaneously, then the felt recoil of the firing platform increases, but this makes the shotgun harder to use for elderly or users of small stature

Engineering Contradiction:

Improvenumber of shot pelletsVSAvoidfelt recoil

Core Design Contradiction:

Quantity of substanceVSForce

Solution Approach 1:

The patent segments the shot pellets into individual compartments within the payload carrier, allowing for controlled propulsion. This segmentation enables the system to fire fewer, more precisely directed shot pellets, reducing the total recoil force while maintaining effective target engagement capability.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent applies local quality by concentrating the propellant force through the sabot carrier onto specific shot pellets in the payload carrier. This localized force application reduces overall recoil dispersion and makes the shotgun more manageable for users with limited strength, while still delivering sufficient energy to hit targets.

Inventive Principle:

Principle #3Local quality

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

This design results in improved accuracy with reduced shot dispersion and recoil, allowing for a tighter shot pattern and increased effectiveness in hitting targets with sufficient energy.

Implementation Method 1

the primer ignites the propellant, forcing the wad, payload carrier, and shot out of a muzzle of the firearm

Methodology Applied

Scientific EffectCombustion: Combustion

Implementation Method 2

the shot exit the payload carrier through open ends of the chambers, outrun the payload carrier, and follow a ballistic trajectory downrange

Methodology Applied

Scientific EffectBallistic trajectory: Free Fall

Data Source

PatentUS12253345B2Accurate, low recoil shotshell

Publication Date: 2025.03.18 TIFFANY JOHN R

AI summary

A shotshell comprising a casing having a top end and bottom end, and a longitudinal axis that runs from the top end to the bottom end; a base disposed at and sealing the bottom end of the casing; a propellant disposed toward the bottom end of the casing, above the base; a primer set into the base and in contact with the propellant; a wad disposed above the propellant; a plurality of shot pellets; a payload carrier disposed between the wad and the top end of the casing, the payload carrier comprising one or more longitudinal chambers, each chamber configured to store a portion of the plurality of shot pellets in a single file column aligned parallel to the longitudinal axis of the casing.