Magnetic Buffer Assembly for Adjustable Recoil Damping

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Solution Overview

Problem

Typical firearm buffers have static weights and solid constructions that prevent recoil spring binding, but are not easily serviceable by users, requiring special tools for weight adjustments and imparting recoil impulses upon impact.

Innovation Solution

A magnetic shock absorbing buffer system with a repelling magnet powered plunger that allows users to adjust tension and weight without removing the buffer, utilizing a compressible plunger and permanent magnets for self-regulating shock absorption and reduced recoil.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a static weight buffer with solid construction is used, then recoil spring binding is prevented, but the buffer is not easily serviceable and requires special tools for weight adjustments

Engineering Contradiction:
Improverecoil spring binding preventionVSAvoidserviceability
Core Design Contradiction:
ReliabilityVSEase of repair

Solution Approach 1:

The buffer is divided into a buffer body and a separate plunger component that can be independently adjusted. The plunger is segmented from the buffer body and can be removed and repositioned along the buffer's longitudinal axis without requiring disassembly of the entire buffer assembly or special tools, enabling easy weight adjustment while maintaining structural integrity for preventing recoil spring binding

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The buffer transitions from a static solid construction to a dynamic adjustable system where the plunger position can be modified by the user. The plunger is designed to be movable along the buffer body and can be positioned at different locations to change the buffer's effective weight and shock absorption characteristics, making the system adaptable rather than fixed

Inventive Principle:
Principle #15Dynamics

2Object-affected harmful factors

If internal weights are added to change velocity of reciprocating mass, then recoil is reduced, but the buffer requires special tools and removal from firearm for weight changes

Engineering Contradiction:
Improverecoil impulseVSAvoiduser serviceability
Core Design Contradiction:
Object-affected harmful factorsVSEase of operation

Solution Approach 1:

The buffer system is designed to be self-serviceable by the end user without requiring special tools or removal from the firearm. The plunger can be independently adjusted by the user through simple manipulation of the adjustment mechanism built into the buffer assembly, allowing users to modify weight and velocity characteristics themselves

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The buffer's effective weight parameter is changed by repositioning the plunger along the buffer body. By moving the plunger to different positions, the user changes the distribution of mass and the spring's compression characteristics, thereby adjusting the velocity of the reciprocating mass and reducing recoil impulse without adding or removing physical weight components

Inventive Principle:
Principle #35Parameter changes

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

Enables users to adjust the buffer weight and tension easily, reducing recoil force and providing a steadier shock dampening effect, without the need for special tools or replacing the entire assembly.

Implementation Method 1

a first permanent magnet positioned within the buffer element cavity and a second permanent magnet positioned on the plunger element such that the first permanent magnet and the second permanent magnet repel one another

Methodology Applied
Scientific EffectMagnetic repulsion: Ion Repulsion/Attraction

Implementation Method 2

a compressible plunger element positioned within the buffer tube and having a distal end and a proximal end, wherein the distal end of the plunger element is compressed by the bolt carrier group

Methodology Applied
Scientific EffectElastic deformation: Elasticity

Data Source

PatentUS11187477B2Magnetic shock absorbing buffer
Publication Date: 2021.11.30 SNYDER BRADLEY W
  • US11187477B2 patent drawing
  • US11187477B2 patent drawing
  • US11187477B2 patent drawing

AI summary

A magnetic shock absorbing buffer system having a buffer element with a buffer element cavity having internal buffer threads and a buffer cavity shoulder; a plunger element having a plunger head that is slidable within the buffer element cavity, wherein a plunger body extends through the buffer cavity second open end, and wherein a plunger shoulder contacts the buffer cavity shoulder to maintain the plunger head within the buffer element cavity; an adjustment screw, wherein external adjustment screw threads interact with the internal buffer threads to allow the adjustment screw to be adjustably positioned within the buffer cavity; and at least one dynamic magnet and at least one static magnet positioned within the buffer cavity, wherein like poles face one another such that the magnets act to repel one another within the buffer cavity, and wherein the adjustment screw maintains the magnets within the buffer cavity.