Adjustable Combination Ladder Assembly for Stable Extended Reach
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Solution Overview
Problem
Conventional combination ladders lack versatility and stability in various configurations, requiring additional support structures for extended heights and not easily adaptable for different usage scenarios.
Innovation Solution
A ladder design featuring a first and second assembly with pivotally coupled rails, a top cap, and selectively positionable components, allowing the ladder to transition between step, straight, and leaning configurations with enhanced stability and compact storage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If conventional combination ladders are used in straight ladder configuration for extended heights, then access to elevated areas is improved, but additional support structures (walls, poles) are required which reduces versatility
Solution Approach 1:
The second assembly is selectively positionable relative to the first assembly through nested configurations. In the straight ladder configuration, the second assembly extends the reach height while being integrated with the first assembly through hinges and positioning mechanisms, allowing the ladder to achieve extended heights without requiring external support structures.
Solution Approach 2:
The ladder incorporates selectively positionable components including the second assembly that can be adjusted between multiple configurations (step, straight, leaning). This dynamic adjustability allows the ladder to transition between different usage scenarios, providing both extended height capability and versatility without requiring additional support structures.
2Adaptability or versatility
If combination ladders are designed with multiple configurations, then versatility is improved, but structural stability in each configuration deteriorates
Solution Approach 1:
The ladder is divided into a first assembly and a second assembly that can be independently positioned and locked. Each assembly maintains its structural integrity while the connection between them through hinges and positioning mechanisms ensures stability in each configuration. The segmented design allows for versatile configurations while maintaining stability through proper load distribution and locking mechanisms.
3Volume of moving object
If ladders are designed for compact storage, then space efficiency is improved, but ease of operation deteriorates
Solution Approach 1:
The selectively positionable second assembly incorporates hinges and positioning mechanisms that enable easy transition between configurations. The dynamic design allows the ladder to be quickly adjusted from compact storage position to various usage configurations (step, straight, leaning) through simple manual operations, maintaining ease of operation while achieving compact storage volume.
Data Source
AI summary
Ladders and ladder components are described herein, including multipurpose and adjustable ladders. In one embodiment, a ladder includes a first assembly having rails and rungs, a second assembly having rails and rungs, and one or more hinges coupling the first and second assemblies together such that the first and second assembly may be positioned relative to one another in at least a position or state and at least a second position or state. A top cap is coupled to the rails of the first assembly, such that when the first and second assemblies are in the first position, the rails of the second assembly do not contact the top cap. When the first and second assemblies are in the second position, each rail of the second assembly is at least partially nested in one of a pair of channels formed in the top cap.