Forearm Brace Stabilizes Archery Bow Elevation Torque

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Solution Overview

Problem

Archery bows experience undesirable torques and rotations during shooting due to the substantial draw weight, affecting accuracy and repeatability, and existing accessories often interfere with the ease of use or provide inadequate support for the archer's forearm.

Innovation Solution

A forearm brace that extends around the forearm axis by at least 90°, positioned forward of the bow string, providing support and stabilization, and can be adjusted to accommodate different archer positions and bow types, allowing for improved grip and reduced manual torques.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If a tight grip is applied to the bow, then the bow can be securely held, but undesirable torques are applied to the bow causing rotation in elevation and azimuth

Engineering Contradiction:
Improvegrip strengthVSAvoidmanual torques
Core Design Contradiction:
StrengthVSObject-generated harmful factors

Solution Approach 1:

The forearm brace acts as an intermediary support between the archer's forearm and the bow, transferring the load from the hand grip to the brace. This mediator structure allows the hand to maintain a relaxed grip while the brace provides the necessary support to counteract bow weight and torques during drawing and shooting.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Speed

If the bow is quickly grasped and raised when hunting, then responsiveness is improved, but accessories may interfere with ease of use

Engineering Contradiction:
Improvebow acquisition speedVSAvoidease of use
Core Design Contradiction:
SpeedVSEase of operation

Solution Approach 1:

The forearm brace is designed with dynamic characteristics that allow it to be quickly donned and doffed during hunting scenarios. The brace structure enables rapid attachment to the forearm and quick integration with the bow system, maintaining responsiveness while providing necessary support. The design accommodates fast movements without compromising ease of operation.

Inventive Principle:
Principle #15Dynamics

Data Source

PatentUS9372046B2Accessory for an archery bow
Publication Date: 2016.06.21 KILLZ PRODUCTS LLC
  • US9372046B2 patent drawing
  • US9372046B2 patent drawing
  • US9372046B2 patent drawing

AI summary

An accessory for an archery bow and bow string that are centered on a bow plane. The accessory has a support that is attached to forearm brace and is adapted to be supported by the bow. The forearm brace extends around a forearm axis at least 90° and is sized to at least partially encompass a forearm. The brace has an opening for inserting a forearm. This opening is oriented in a direction that points outwardly without tilting toward the bow plane. The support is adapted to position at least a portion of the brace forward of the bow string when in its neutral position. An archer can grasp the bow and insert into the brace a forearm that is encompassed by the brace for at least 90°. The archer can draw and release the bow string, allowing the brace to stabilize the angle of elevation of the bow.