Ladder Mounting System for Parapet Retention
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Solution Overview
Problem
Existing ladder securing and stabilizing systems fail to safely and securely position and retain ladders against building parapets, leading to frequent accidents due to slipping, sliding, or tipping, particularly in industrial and commercial settings with parapet roofs.
Innovation Solution
A ladder mounting and retaining system comprising a parapet support member, a ladder support member, and a connecting threaded rod, with adjustable features to accommodate varying parapet and ladder widths, ensuring secure positioning and retention through locking nuts and rotatable components for level adjustment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If existing ladder securing systems are used, then ladder stability is improved, but they fail to securely position and retain ladders against building parapets
Solution Approach 1:
The patent introduces parapet support members as intermediary components that specifically engage with the parapet structure. These members act as mediators between the ladder and the parapet, providing a secure connection point that existing systems lack. The support members include features like engagement hooks or brackets that directly interface with the parapet edge, ensuring reliable retention.
Solution Approach 2:
The system is divided into distinct functional segments: parapet support members for attachment to the building parapet, ladder support members for contact with the ladder, and connecting members to link them. This segmentation allows each component to be optimized for its specific function, with the parapet support members specifically designed to engage parapet structures securely.
2Device complexity
If fixed-distance support members are used, then structural simplicity is improved, but they cannot accommodate parapets of different widths
Solution Approach 1:
The connecting members are designed with adjustable features that allow the distance between parapet support members and ladder support members to be dynamically changed. This may include telescoping mechanisms, adjustable-length rods, or reconfigurable connection points, enabling the same system to adapt to various parapet widths while maintaining structural integrity.
Solution Approach 2:
The system is designed as a universal solution that can accommodate different parapet widths and configurations. The adjustable connecting members and modular design allow a single system to serve multiple functions across different building types and parapet dimensions, eliminating the need for multiple specialized systems.
3Ease of manufacture
If non-adjustable ladder supports are used, then manufacturing simplicity is improved, but they cannot accommodate ladders of varying widths
Solution Approach 1:
The ladder support members incorporate adjustable mechanisms that allow the support width to be changed to match different ladder widths. This may involve movable support arms, adjustable positioning brackets, or reconfigurable support structures that can be easily adjusted without requiring complex manufacturing processes.
Solution Approach 2:
The system allows for easy adjustment of key parameters such as support member spacing and positioning through simple mechanisms like sliding adjustments, interchangeable components, or tool-free assembly features. This enables the same manufactured components to accommodate varying ladder widths by changing their operational parameters rather than requiring different manufactured parts.
4Adaptability or versatility
If complex adjustment mechanisms are used, then adaptability to different parapet widths is improved, but ease of installation is worsened
Solution Approach 1:
The system incorporates pre-configured adjustment settings or pre-assembled modular components that allow for quick adaptation to different parapet widths. Critical adjustment features may be pre-set during manufacturing, and modular sections can be pre-assembled to match common parapet dimensions, reducing on-site adjustment complexity and installation time.
Data Source
AI summary
A ladder mounting and retaining system for use on building parapets utilizes a parapet support member secured to the parapet of a building, a ladder support member for retaining the sides of the lengths of a ladder, and a connecting member in the form of a threaded rod, interconnecting the parapet support member and the ladder support member for maintaining these members at a given distance from each other. The parapet support member is secured in position by locking nuts threaded around the connecting member and the ladder support member is secured over the outboard edge of the parapet by retention members. Ladder supports are adjustable on the ladder support member to accommodate ladders of different widths.