Double Edge Joint Sealing Profile for Ergonomic Drywall Installation

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Solution Overview

Problem

Existing sealing compounds for double edge joints in drywall are time-consuming to apply, require specific temperature conditions, and lack easy inspection methods, making them ergonomically inefficient and unreliable.

Innovation Solution

A sealing device with a holding portion and base bodies for each cladding, forming a U-shaped receptacle for the holding rail, ensuring easy installation and effective sealing of both edge joints, using a sealing profile that can be aligned with positioning aids and is adaptable to different cladding dimensions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If sealing compounds are used to seal edge joints, then sealing function is provided, but application is time-consuming and not ergonomic

Engineering Contradiction:
Improvesealing functionVSAvoidapplication process
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The sealing device is divided into multiple base bodies (first base body, second base body, third base body) that can be applied separately to different edge joints. Each base body independently seals a specific joint, allowing for easier application and better ergonomics while maintaining comprehensive sealing coverage.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent replaces the chemical sealing compound application process with a mechanical sealing system using pre-formed base bodies made of elastomeric material. These base bodies are mechanically attached to the drywall edges, eliminating the need for time-consuming compound application and providing immediate sealing functionality.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

2Reliability

If sealing compounds are used, then sealing is provided, but can only be used reliably at temperatures of at least 5°C and substrate must be dry

Engineering Contradiction:
Improvesealing reliabilityVSAvoidtemperature and moisture conditions
Core Design Contradiction:
ReliabilityVSAdaptability or versatility

Solution Approach 1:

The sealing device uses elastomeric material for the base bodies, which provides reliable sealing across a wider range of temperatures and moisture conditions compared to sealing compounds. The elastomeric material maintains its sealing properties in conditions where sealing compounds would fail, eliminating the restriction to temperatures above 5°C and dry substrates.

Inventive Principle:
Principle #35Parameter changes

3Reliability

If sealing compounds are applied, then sealing is achieved, but inspection is not easy and installation depth cannot be checked non-destructively

Engineering Contradiction:
Improvesealing effectVSAvoidinspection difficulty
Core Design Contradiction:
ReliabilityVSDifficulty of detecting and measuring

Solution Approach 1:

The base bodies are made of elastomeric material that can be produced in different colors, allowing for visual inspection and verification of proper installation. The color-coded system enables easy detection of installed base bodies and verification of sealing depth without destructive testing, solving the inspection difficulty associated with clear or transparent sealing compounds.

Inventive Principle:
Principle #32Color changes

4Reliability

If a sealing device with multiple base bodies is used, then effective sealing of both edge joints is achieved, but device complexity increases

Engineering Contradiction:
Improvesealing effectivenessVSAvoidstructure complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The sealing device is segmented into multiple independent base bodies that can be applied to different edge joints separately. This segmentation allows for effective sealing of complex double edge joints while maintaining simplicity in the application process, as each base body can be installed independently without requiring complex coordination.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The base bodies are designed with universal applicability to different edge joint configurations. Each base body can seal various types of edge joints (floor, wall, ceiling adjacencies), reducing the need for multiple specialized sealing solutions and simplifying the overall device complexity while maintaining sealing effectiveness across different applications.

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

Data Source

PatentUS12442179B2Sealing device for double edge joints, and drywall
Publication Date: 2025.10.14 HILTI AG
  • US12442179B2 patent drawing
  • US12442179B2 patent drawing
  • US12442179B2 patent drawing

AI summary

A sealing device can be used for a double edge joint which is formed between a floor, a wall, or a ceiling and an adjacent first cladding and a spaced-apart second cladding of drywall having double-layer cladding. The sealing device contains a sealing profile having a holding portion and a first base body for sealing a first edge joint on the first cladding and a second base body for sealing a second edge joint on the second cladding. The first and the second base bodies are connected to one another via the holding portion and, in combination therewith, form a U-shaped receptacle for the holding rail of the drywall. Furthermore, drywall can contain a sealing device of this type.