Ladder Leveling Mechanism with Gear Lock and Rack
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Solution Overview
Problem
Existing ladder leveling accessories, such as hand cranks and ratchet systems, are difficult to use and put high mechanical stress on small components, making them inefficient for leveling ladders on uneven surfaces.
Innovation Solution
A ladder leveling mechanism comprising a pair of leg assemblies with levers, shafts, and locking mechanisms, including a gear lock, rotatable gear, and rack, which allows for easy attachment to ladders and provides fine adjustment leveling capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If hand cranks or ratchet systems are used for ladder leveling, then leveling capability is provided, but the devices are difficult to use and put high mechanical stress on small components
Solution Approach 1:
The patent replaces complex mechanical systems (hand cranks, ratchets) with a simple lever-based mechanical advantage system. The lever arm provides force multiplication, allowing users to level the ladder with minimal effort while distributing stress across larger structural components rather than small mechanical parts.
Solution Approach 2:
The invention extracts the essential function of leveling from complex accessory systems and integrates it directly into the ladder structure through leg assemblies. This eliminates the need for separate hand cranks or ratchet mechanisms, reducing both operational complexity and mechanical stress points.
2Stability of the object's composition
If bulky attachments are used for leveling, then stability on uneven surfaces is improved, but the attachments are difficult to use and add device complexity
Solution Approach 1:
The patent merges the leveling function with the ladder's existing leg structure. The leg assemblies are integrated into the ladder frame, combining support and leveling functions into a single unified structure rather than adding separate bulky attachments.
Solution Approach 2:
The leg assemblies serve multiple functions: they provide structural support for the ladder while simultaneously enabling leveling adjustments. This multi-functionality eliminates the need for dedicated leveling attachments, reducing overall device complexity.
3Measurement precision
If fine adjustment leveling capabilities are added, then precision is improved, but the mechanism becomes more complex
Solution Approach 1:
The patent employs dynamic leg assemblies that can be adjusted during use. The legs incorporate movable components with locking mechanisms that allow for incremental positioning, enabling fine adjustment of ladder level without requiring complex precision mechanisms.
Solution Approach 2:
The leveling function is divided into discrete adjustment increments through segmented leg positions. The locking mechanism holds the leg at specific intervals, providing sufficient precision for leveling while maintaining mechanical simplicity through discrete rather than continuous adjustment.
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
The mechanism enables quick and easy leveling of ladders on uneven surfaces with minimal stress on the ladder components, providing both macro and micro-leveling adjustments for enhanced stability and safety.
Implementation Method 1
The locking mechanism includes a gear lock, a rotatable gear, and a rack
Implementation Method 2
The locking mechanism includes a gear lock, a rotatable gear, and a rack
Implementation Method 3
Each leg assembly includes a lever, a shaft movable by adjustment of the lever
Data Source
AI summary
A leveler attachment including a first leg assembly and a second leg assembly, the first leg assembly and the second leg assembly each including a lever, a shaft movable by adjustment of the lever, a locking mechanism coupled to an end of the shaft, the locking mechanism including a gear lock, a rotatable gear, and a rack to interact with teeth of the rotatable gear. The rotatable gear is configured to rotate on the rack when in an unlocked state causing inverse motion of the first leg assembly relative to the second leg assembly. Adjusting the locking mechanism to the unlocked state includes lifting the lever which lowers the shaft and disengages the teeth of the rotatable gear from the gear lock thereby permitting the rotatable gear to rotate along the rack.