Field Configurable Flagpole Truck Pulley System

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Solution Overview

Problem

Conventional flagpole trucks have limited options for rotational support and configuration, making it impossible to change mounting or rotational configuration without replacement, and external halyard mounts expose the pulley, which is not aesthetically pleasing.

Innovation Solution

A field-configurable flagpole truck system with a pulley assembly inside an enclosure, allowing for adjustable halyard positioning and rotational control through blocking pins, enabling 360-degree rotation, restricted rotation, or fixed positioning, and accommodating both external and internal halyard configurations.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If conventional flagpole trucks are designed for external halyard mounting, then the pulley is accessible and functional, but the pulley is exposed and aesthetically unpleasing

Engineering Contradiction:
Improvepulley accessibilityVSAvoidaesthetic appearance
Core Design Contradiction:
Ease of manufactureVSShape

Solution Approach 1:

The pulley assembly is nested inside the flagpole truck enclosure, with the pulley housed within the truck body rather than exposed externally. The halyard passes through the enclosure to access the pulley function while the pulley itself remains concealed within the structured housing, achieving both aesthetic concealment and functional accessibility

Inventive Principle:
Principle #7Nested doll (Nesting)

2Reliability

If conventional flagpole trucks have fixed mounting configuration, then the structure is simple and reliable, but changing configuration requires replacement of the entire truck

Engineering Contradiction:
Improvestructural stabilityVSAvoidconfiguration flexibility
Core Design Contradiction:
ReliabilityVSAdaptability or versatility

Solution Approach 1:

The flagpole truck incorporates adjustable mounting mechanisms that allow the pulley assembly to be repositioned between multiple configurations (e.g., left-side mounting, right-side mounting, center mounting) while maintaining structural integrity. The mounting stem and attachment mechanisms enable dynamic reconfiguration without requiring replacement of the entire truck assembly

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The flagpole truck is divided into separable components including the pulley assembly, mounting stem, and attachment mechanisms that can be independently adjusted and reconfigured. This segmentation allows flexible repositioning of individual components to achieve different mounting configurations while maintaining the overall structural reliability of the truck

Inventive Principle:
Principle #1Segmentation

3Shape

If the pulley assembly is positioned inside the enclosure, then the aesthetics are improved, but the halyard routing becomes more complex

Engineering Contradiction:
Improveaesthetic appearanceVSAvoidhalyard routing
Core Design Contradiction:
ShapeVSDevice complexity

Solution Approach 1:

The enclosure serves as an intermediary structure that provides both aesthetic concealment and functional halyard routing pathways. The enclosure includes integrated openings and channels that guide the halyard from external attachment points to the internal pulley assembly, simplifying the routing complexity by providing dedicated pathways within the enclosed structure

Inventive Principle:
Principle #24Intermediary (Mediator)

Data Source

PatentUS11846409B2Field configurable flagpole truck system and device
Publication Date: 2023.12.19 PITCHER DANIEL J
  • US11846409B2 patent drawing
  • US11846409B2 patent drawing
  • US11846409B2 patent drawing

AI summary

A flagpole truck system includes a flag pole truck device, including an enclosure body with a blocking protrusion, first and second pulley mounts, first and second halyard apertures, and internally mounted pulley assembly, a mounting stem assembly with first and second pin apertures, first and second blocking pins; a flagpole; a flag; a halyard; and a flag pole finial; such that the flag pole truck device is configurable in a first configuration for external halyard mounting and in a second configuration for partially internal halyard mounting; and such that the flag pole truck device is configurable for free rotation, restricted rotation, and blocked rotation.