Split Riser Weight Layout for Stable Archery Bows

Solution Overview

Problem

Existing archery bow stabilizers increase bow stability but also add unwanted mass and can cause the bow to pivot forward after arrow launch, necessitating a design that enhances stability with smaller dimensions and better ergonomics.

Innovation Solution

The archery bow design incorporates a weight with two symmetrical portions that attach to the riser via channels and protrusions, utilizing fasteners or gaskets for secure attachment without contacting the riser directly, positioned to balance stability and reduce pivot effect.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Stability of the object's composition

If large weights are spaced far in front of the riser to provide high stability, then bow stability is improved, but the bow mass increases and the bow pivots forward after arrow launch

Engineering Contradiction:

Improvebow stabilityVSAvoidbow mass

Core Design Contradiction:

Stability of the object's compositionVSWeight of moving object

Solution Approach 1:

The weight is divided into two separate portions (first portion and second portion) that are positioned on opposite sides of the shooting plane. Each portion attaches to the riser through its own channel and protrusion interface, allowing the mass to be distributed rather than concentrated at a single location far from the riser.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The weight portions are positioned in the vertical dimension (above and below the shooting plane) rather than extending horizontally far from the riser. This dimensional repositioning maintains the stabilizing moment of inertia while reducing the horizontal lever arm that causes forward pivot.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

2Stability of the object's composition

If large weights are spaced far in front of the riser to provide high stability, then bow stability is improved, but the bow pivots forward after arrow launch

Engineering Contradiction:

Improvebow stabilityVSAvoidergonomic performance

Core Design Contradiction:

Stability of the object's compositionVSEase of operation

Solution Approach 1:

The weight is divided into two separate portions (first portion and second portion) that are positioned on opposite sides of the shooting plane. Each portion attaches to the riser through its own channel and protrusion interface, allowing the mass to be distributed rather than concentrated at a single location far from the riser.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The weight portions are positioned in the vertical dimension (above and below the shooting plane) rather than extending horizontally far from the riser. This dimensional repositioning maintains the stabilizing moment of inertia while reducing the horizontal lever arm that causes forward pivot.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

3Stability of the object's composition

If stabilizer dimensions are increased to provide high stability, then bow stability is improved, but the stabilizer size increases reducing ergonomics

Engineering Contradiction:

Improvebow stabilityVSAvoidstabilizer size

Core Design Contradiction:

Stability of the object's compositionVSVolume of moving object

Solution Approach 1:

The weight is divided into two separate portions (first portion and second portion) that are positioned on opposite sides of the shooting plane. Each portion attaches to the riser through its own channel and protrusion interface, allowing the mass to be distributed rather than concentrated at a single location far from the riser.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The weight portions are positioned in the vertical dimension (above and below the shooting plane) rather than extending horizontally far from the riser. This dimensional repositioning maintains the stabilizing moment of inertia while reducing the horizontal lever arm that causes forward pivot.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

Data Source

PatentUS20260029210A1Archery Bow Riser Weight

Publication Date: 2026.01.29 MCP IP LLC

AI summary

In some embodiments, an archery bow comprises a riser comprising a cavity, a first limb assembly, a second limb assembly and a bowstring arranged to flex the first limb assembly and the second limb assembly. A weight is attached to the riser. The weight comprises a first portion, a second portion and a fastener attaching the first portion to the second portion. The first portion is oriented in the cavity and the second portion is oriented in the cavity.