Ladder Stabilizing Accessory with Adjustable Outrigger Legs

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Solution Overview

Problem

Ladders often slip rearwardly or laterally when not sufficiently secured, posing a significant accident risk for roofers and other tradesmen, especially when extended beyond the roof line.

Innovation Solution

A ladder stabilizing accessory with adjustable clamps and pivotally attached leg and footing members, featuring a semi-circular connector with locking pins and telescopic rods, allowing for secure attachment at various angles and locations along the ladder, and raised segments to clear debris.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the ladder is extended beyond the roof line to allow workers to climb down, then the accessibility and usability of the ladder is improved, but the stability of the ladder deteriorates as it becomes more prone to slipping rearwardly or laterally

Engineering Contradiction:
ImproveaccessibilityVSAvoidstability
Core Design Contradiction:
Ease of operationVSStability of the object's composition

Solution Approach 1:

The stabilizing accessory extends the ladder's function into a new dimensional space by adding outrigger legs that project laterally beyond the ladder's footprint. This creates a wider base of support in the horizontal plane, preventing lateral slipping while allowing the ladder to maintain its extended vertical position for worker accessibility.

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

Solution Approach 2:

The stabilizing accessory is divided into separate functional segments: connector members that attach to the ladder rails, leg members that provide lateral support, and footing members that contact the ground. This segmentation allows each component to perform its specific function independently while collectively solving the stability problem.

Inventive Principle:
Principle #1Segmentation

2Stability of the object's composition

If the ladder is secured with a fixed stabilizing device, then the stability of the ladder is improved, but the adaptability to different ladder widths and positions deteriorates

Engineering Contradiction:
ImprovestabilityVSAvoidadaptability
Core Design Contradiction:
Stability of the object's compositionVSAdaptability or versatility

Solution Approach 1:

The stabilizing accessory incorporates dynamic adjustment mechanisms including telescopic rods with locking pins that allow the leg members to be positioned at various angles and distances from the ladder. This dynamic configurability enables the device to adapt to different ladder widths and positions while maintaining stable support.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The connector members are designed with multiple openings and adjustable clamps that can accommodate different ladder rail configurations and positions. This universal design allows the same stabilizing accessory to be adapted to various ladder types and widths, making it a multi-functional device.

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

3Adaptability or versatility

If the ladder rests on a surface with debris, then the ladder can be positioned on varied terrain, but the stability deteriorates due to poor contact between the ladder footing and the surface

Engineering Contradiction:
Improveterrain adaptabilityVSAvoidcontact stability
Core Design Contradiction:
Adaptability or versatilityVSStability of the object's composition

Solution Approach 1:

The raised segments on the footing members convert the harmful effect of debris into a beneficial function. By plowing through or pushing aside debris with the raised segments, the footing members clear a path to firm ground contact, transforming the obstacle into part of the positioning mechanism that ensures stable support.

Inventive Principle:
Principle #22Blessing in disguise (Convert harm into benefit)

Data Source

PatentUS20200378186A1Ladder stabilizing accessory
Publication Date: 2020.12.03 PERREAULT PATRICK
  • US20200378186A1 patent drawing
  • US20200378186A1 patent drawing
  • US20200378186A1 patent drawing

AI summary

A ladder stabilizing accessory provides a pair of connecting brackets joined by a transverse telescoping rod. Each connecting bracket consists of a footing or leg pivotally attached at one of its ends. The legs are angularly adjustable as each bracket has a semi-circular section perforated with a plurality of openings laid in an arcuate fashion so that a pin passing through a hole in the leg can also pass through any given opening so as to lock the leg in a given angle relative to the ladder. The bracket has a clamping member that clamps unto the rail of the ladder so as to secure the bracket at a specific location on the ladder. With the help of the telescopic rod, both sides of the ladder can be secured by the pair of brackets.