Bow Sight Pin Array Adjustment System

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Solution Overview

Problem

Existing archery bow sights require multiple lead screws for independent adjustment of sight pins, increasing weight, cost, and complexity, and are affected by the shooter's natural bow cant, which reduces accuracy.

Innovation Solution

A multi-axis bow sight with a single micro-adjust mechanism that allows independent adjustment of each sight pin using a lead screw, decoupling bow cant from elevation and windage adjustments, and incorporating a spring-loaded pin carrier system to prevent thread damage, along with an eye alignment assembly for precise orientation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If multiple lead screws are used for independent adjustment of each sight pin, then independent adjustment capability is improved, but device complexity and weight increase

Engineering Contradiction:
Improveindependent adjustment capabilityVSAvoidnumber of lead screws
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The single lead screw is segmented into multiple independent adjustment zones, each capable of independently adjusting individual sight pins. The lead screw contains multiple threaded sections along its length, allowing different pins to be adjusted independently through the same mechanical component.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

A single lead screw performs multiple functions by providing independent adjustment capability for multiple sight pins simultaneously. This multi-functional design eliminates the need for separate lead screws for each pin, reducing overall device complexity while maintaining independent adjustment capability.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Measurement precision

If elevation and windage adjustments are made with the bow held vertical, then adjustment precision is improved, but ease of operation deteriorates due to shooter's natural bow cant

Engineering Contradiction:
Improveadjustment precisionVSAvoidease of adjustment
Core Design Contradiction:
Measurement precisionVSEase of operation

Solution Approach 1:

The support assembly incorporates rotational freedom allowing the bezel to dynamically adapt to the shooter's natural bow cant angle. The assembly transitions from a fixed vertical alignment to a dynamic configuration that accommodates the shooter's preferred bow orientation while maintaining adjustment precision through the level indicator.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

A level indicator assembly acts as an intermediary between the bow's canted position and the elevation/windage adjustment mechanisms. This intermediary component allows the shooter to operate adjustments at their natural bow cant angle while the level indicator ensures the bezel remains properly aligned for precise adjustments.

Inventive Principle:
Principle #24Intermediary (Mediator)

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 precise, independent adjustment of sight pins and decouples bow cant from elevation and windage operations, improving shooting accuracy by allowing adjustments along vertical and horizontal axes while maintaining the shooter's preferred bow orientation.

Implementation Method 1

The spring loaded pin carriers automatically disengage from the micro-adjust lead screw to prevent inadvertent damage to the threads

Methodology Applied
Scientific EffectSpring: Spring

Data Source

PatentUS8839525B2Pin array adjustment system for multi-axis bow sight
Publication Date: 2014.09.23 FERADYNE OUTDOORS LLC
  • US8839525B2 patent drawing
  • US8839525B2 patent drawing
  • US8839525B2 patent drawing

AI summary

A sighting device for a bow that includes a support assembly adapted to attach to the bow. A bezel assembly is attached to the support assembly. The bezel assembly includes a micro-adjust with a lead screw located adjacent to a bezel opening. A plurality of pin carriers each include a slider selectively moveable between an engaged position coupled to the lead screw and a disengaged position. As a result, each pin carrier is adapted to be selectively and independently displaced or not displaced by rotation of the micro-adjust. A plurality of sight pins are coupled to the pin carriers. Each sight pin includes a sight point at a distal end located in the bezel opening and a proximal end coupled to one of the pin carriers. The sight points are adapted to align the bow with a target viewed through the bezel opening.