Combination Ladder Platform and Tray for Stability

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Solution Overview

Problem

Conventional ladders, particularly combination ladders, pose challenges in terms of balance, storage of tools, and user fatigue due to narrow rungs and lack of top caps for storage, leading to inefficiencies and safety hazards during use.

Innovation Solution

A combination ladder design featuring adjustable rail assemblies with hinges, a platform for improved stability, and a tray or handrail system for tool storage, allowing for multiple configurations and enhanced user support.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If conventional combination ladders are used, then the ladder can be used as adjustable stepladder or extension ladder, but the ladder lacks top cap for storage and has narrow rungs causing user fatigue

Engineering Contradiction:
Improveladder configuration versatilityVSAvoiduser comfort and storage capability
Core Design Contradiction:
Adaptability or versatilityVSEase of operation

Solution Approach 1:

The ladder design integrates multiple functions into a single structure: the platform serves both as an additional support surface for user stability and as a storage surface for tools and materials, eliminating the need for separate top caps while maintaining the adjustable stepladder and extension ladder configurations

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

Solution Approach 2:

The invention adds a horizontal dimension to the ladder structure by incorporating a platform that extends perpendicular to the rail assemblies, providing an additional surface area for user support and storage without interfering with the vertical ladder configurations

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Device complexity

If user stands on narrow rungs, then the ladder maintains simple structure, but user experiences fatigue and reduced balance

Engineering Contradiction:
Improveladder structure simplicityVSAvoiduser balance and fatigue reduction
Core Design Contradiction:
Device complexityVSEase of operation

Solution Approach 1:

The ladder support system is segmented into multiple surfaces: the traditional rungs for basic support and the additional platform for enhanced support and storage, allowing users to distribute their weight across larger surface areas without complicating the overall ladder structure

Inventive Principle:
Principle #1Segmentation

3Length of moving object

If user stands on higher rungs, then the user can reach higher locations, but the user loses rails to brace against for stability

Engineering Contradiction:
Improveladder height reachVSAvoiduser stability and balance
Core Design Contradiction:
Length of moving objectVSStability of the object's composition

Solution Approach 1:

The platform extends in a direction perpendicular to the rail assemblies, creating a new dimensional space where users can position themselves and brace against the platform edges or stored items, providing stability without requiring contact with the vertical rails

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

4Device complexity

If conventional ladders lack storage surfaces, then the ladder structure remains simple, but users must make multiple trips to exchange tools

Engineering Contradiction:
Improveladder structure simplicityVSAvoidwork efficiency and time utilization
Core Design Contradiction:
Device complexityVSProductivity

Solution Approach 1:

The platform is designed to serve dual purposes: providing additional support surface for user stability and serving as a storage surface for tools and materials, thereby eliminating multiple trips to exchange tools while maintaining relatively simple ladder structure

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

Solution Approach 2:

The platform provides a preliminary storage location for tools and materials before they are needed, allowing users to prepare and organize their workspace in advance, reducing the frequency of trips up and down the ladder during task execution

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentUS11846137B2Ladders, ladder components and related methods
Publication Date: 2023.12.19 LITTLE GIANT LADDER SYSTEMS LLC
  • US11846137B2 patent drawing
  • US11846137B2 patent drawing
  • US11846137B2 patent drawing

AI summary

Ladders, ladder components and related methods are provided including various embodiments of a combination ladder. In some embodiments, a platform is provided that is fixedly coupled with a rail assembly of a combination ladder. The platform may pivot between a useable position or state and a stowed or stored position or state. The platform may maintain a position relative to certain rungs of the rail assembly while being displaceable relative to other rungs of the rail assembly. A hand rail may be coupled to the rail assembly and a tray may be coupled with the hand rail. The tray and the platform may be configured to maintain a constant distance between one another while the rail assembly is adjusted for height.