Telescoping Roof Hatch Grab Bar Assembly Without Insulation Crush

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Solution Overview

Problem

Existing roof hatch safety systems are not adjustable and often crush insulation, leading to leaks and instability for maintenance personnel, failing to meet safety standards and insulation preservation.

Innovation Solution

A telescoping roof hatch safety grab bar system with adjustable features that fits all standard roof hatches, including a caged design for non-standard orientations, and a stand-off bolt system to secure installation without damaging insulation, ensuring stability and compliance with OSHA regulations.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If traditional fixed grab bar systems are installed on roof hatches, then maintenance personnel gain stability and security, but the insulation around the hatch is crushed causing leaks

Engineering Contradiction:
Improvestability and security for maintenance personnelVSAvoidinsulation damage and leaks
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent employs telescoping arms with adjustable lengths that can be extended or retracted to accommodate different roof hatch sizes. This dynamic adjustment capability allows the grab bar system to fit various openings without requiring excessive force that would crush the surrounding insulation, thereby maintaining both personnel safety and insulation integrity.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The system utilizes adjustable parameters including telescoping arm lengths and positioning mechanisms that allow the grab bar assembly to be customized for each specific roof hatch configuration. By changing these parameters rather than using a fixed rigid structure, the system achieves proper fit without damaging the insulation material.

Inventive Principle:
Principle #35Parameter changes

2Ease of manufacture

If fixed-size grab bar assemblies are used, then installation is simple, but the system cannot accommodate different roof hatch dimensions

Engineering Contradiction:
Improveinstallation simplicityVSAvoidcompatibility with different roof hatch sizes
Core Design Contradiction:
Ease of manufactureVSAdaptability or versatility

Solution Approach 1:

The grab bar system is divided into multiple telescoping segments that can independently adjust in length. This segmentation allows each component to be simplified in manufacturing while the assembled system provides the necessary adaptability to fit various roof hatch dimensions through coordinated adjustment of the segments.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent designs a universal grab bar assembly that can serve multiple roof hatch sizes and configurations through its adjustable mechanisms. The same basic assembly design with telescoping and positioning capabilities can be applied across different installations, providing both ease of manufacture and broad adaptability.

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

3Stability of the object's composition

If rigid mounting structures are used to secure grab bars, then the grab bars remain stable, but the insulation is compressed and leaks develop

Engineering Contradiction:
Improvegrab bar stabilityVSAvoidinsulation compression and leaks
Core Design Contradiction:
Stability of the object's compositionVSObject-affected harmful factors

Solution Approach 1:

The patent introduces adjustable telescoping arms as intermediary elements between the mounting structure and the grab bars. These arms provide the necessary stability and rigidity to support personnel weight while distributing the mounting forces over a larger area, preventing localized compression that would damage the insulation and cause leaks.

Inventive Principle:
Principle #24Intermediary (Mediator)

Data Source

PatentUS8099910B1Roof hatch grab bars
Publication Date: 2012.01.24 GAINES ROBERT G
  • US8099910B1 patent drawing
  • US8099910B1 patent drawing
  • US8099910B1 patent drawing

AI summary

A roof hatch grab bar assembly for adding comfort to a person ascending or descending a roof hatch and its complementary through the roof ladder. The roof hatch grab bar assembly includes grab bar handrails and a cross support assembly with side supports on either side that include telescoping arms. The design is adjustable, easily installed and will not crush the insulation surrounding a roof hatch that is conventionally adhered to the hatch. Installation may be done while minimizing the potential for leaks in the roof.