Adjustable Ladder Platform Mechanism for Variable Working Heights

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Conventional ladders with fixed platforms lack flexibility to adjust working heights, limiting their usability in various elevated locations.

Innovation Solution

An adjustable platform mechanism integrated into the ladder, allowing movement along tracks between multiple secured positions, facilitated by a lock assembly and projection system, enabling users to easily raise or lower the platform for different working heights.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a fixed platform is used on the ladder, then the platform provides stable support, but the ladder lacks flexibility to work at different heights

Engineering Contradiction:

Improveflexibility to work at different heightsVSAvoidplatform adjustment mechanism

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The platform is made adjustable rather than fixed, allowing it to move along the ladder rails to different heights. The lock assembly enables the platform to be positioned at multiple discrete heights and secured in place, transforming a static structure into a dynamic one that adapts to different working requirements.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The platform adjustment mechanism is segmented into discrete components: the platform itself, rails with multiple positions, a lock assembly with selectable locking positions, and engagement mechanisms. This segmentation allows for controlled adjustability while maintaining structural integrity and safety.

Inventive Principle:

Principle #1Segmentation

2Adaptability or versatility

If the platform is made adjustable to multiple heights, then versatility is improved, but the mechanism complexity increases

Engineering Contradiction:

Improveadjustable working heightsVSAvoidplatform adjustment operation

Core Design Contradiction:

Adaptability or versatilityVSEase of operation

Solution Approach 1:

The lock assembly is designed to be operated by the user without requiring additional tools or complex procedures. The user can directly engage or disengage the locking mechanism to adjust the platform height, making the system self-sufficient and easy to operate.

Inventive Principle:

Principle #25Self-service

3Reliability

If a lock assembly is added to secure the platform at different positions, then stability is improved, but device complexity increases

Engineering Contradiction:

Improveplatform security at positioned heightsVSAvoidlock assembly structure

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The locking mechanism is integrated into the platform structure itself rather than being a separate external component. The lock assembly combines multiple functions (securing the platform, enabling adjustment, providing stability) into a single integrated unit that attaches to the ladder rails.

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS20250101805A1Ladders, ladder accessories, components thereof, and adjustable platforms for use therewith

Publication Date: 2025.03.27 WERNER CO

AI summary

Provided herein are ladders including adjustable platforms. In some embodiments, a ladder may include a front rail assembly with a first front rail and a second front rail. The ladder further includes a rear rail assembly coupled to the front rail assembly. The rear rail assembly includes a first rear rail and a second rear rail. The first rear rail has a first track. The second rear rail has a second track. The first and second tracks extend from a first position to a second position. The front rail assembly includes a first pair of brackets at the first position and a second pair of brackets at the second position. The ladder further includes a platform with a first projection that engages the first track and a second projection that engages the second track. The platform is moveable along the first and second tracks between the first and second positions.