Screed Guide Drain Adaptor for Single-Pour Mortar Sloping

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Solution Overview

Problem

The installation of greywater drain systems is complex and costly due to the need for multiple mortar pours and screeding processes, which can lead to inefficiencies and increased time and material costs, especially in ensuring proper sloping and drainage.

Innovation Solution

A screed guide system that includes a circular disk with a recessed center portion and screed guide coupling apertures, attachable to a drain base, simplifies the installation by allowing a single mortar pour and guiding the slope for efficient drainage, reducing the number of elements and complexity in the drain system.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If traditional multiple mortar pours and screeding processes are used, then proper sloping and drainage can be achieved, but installation complexity and time costs increase

Engineering Contradiction:
Improvesloping precisionVSAvoidinstallation complexity
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The screed guide is pre-installed on the drain base before the mortar pour, establishing the slope geometry in advance. This preliminary positioning of the guide structure allows the mortar to be poured to a predetermined slope without requiring multiple adjustment pours, thereby reducing installation complexity while maintaining sloping precision.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The screed guide acts as an intermediary tool between the drain base and the mortar layer. It provides a physical reference surface that mediates the transfer of slope geometry from the drain base to the mortar bed, enabling precise sloping to be achieved through a single pour without complex measurement and adjustment procedures.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Manufacturing precision

If traditional multiple mortar pours and screeding processes are used, then proper sloping and drainage can be achieved, but installation time and material costs increase

Engineering Contradiction:
Improvesloping precisionVSAvoidinstallation time
Core Design Contradiction:
Manufacturing precisionVSLoss of time

Solution Approach 1:

The screed guide is pre-installed on the drain base before the mortar pour, establishing the slope geometry in advance. This preliminary positioning of the guide structure allows the mortar to be poured to a predetermined slope without requiring multiple adjustment pours, thereby reducing installation time while maintaining sloping precision.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The invention allows the installation process to skip the traditional multiple-step screeding process. By using the pre-installed screed guide as a reference, the installer can directly pour the mortar to the correct slope in a single operation, rushing through what would traditionally require multiple sequential steps.

Inventive Principle:
Principle #21Skipping (Rushing through)

3Reliability

If traditional installation methods are used, then drainage can be achieved, but fluid penetration and damage to adjacent building materials may occur

Engineering Contradiction:
Improvedrainage reliabilityVSAvoidfluid penetration damage
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The screed guide is pre-installed to establish the correct slope geometry before the mortar is poured. This ensures that the mortar bed will have the proper slope from the beginning, preventing future drainage issues that could lead to fluid penetration and damage to adjacent building materials.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The screed guide provides a physical feedback mechanism during the mortar pour, allowing the installer to verify that the correct slope is being achieved. This real-time guidance ensures that the drainage system is installed with proper geometry, preventing future drainage failures and associated damage.

Inventive Principle:
Principle #23Feedback

Data Source

PatentUS9790693B2Screed guide drain adaptor
Publication Date: 2017.10.17 OATEY CO
  • US9790693B2 patent drawing
  • US9790693B2 patent drawing
  • US9790693B2 patent drawing

AI summary

A screed guide drain adaptor includes a circular disk with a recessed circular center portion defined therein. The recessed circular center portion creates a transition between an outer ring portion and the recessed circular center portion. The screed guide drain adaptor includes a drain aperture defined within the recessed circular center portion. The screed guide is made of a rigid material.