Prefabricated Shower Curb Structure for Faster Watertight Installation

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

The installation of shower curbs is time-consuming, requires significant materials and tools, and demands skilled labor due to the need for precise cutting and construction of a three-tier lumber structure, often resulting in uneven and costly prefabricated enclosures with lengthy mortar curing times, which can lead to improper water drainage and safety issues.

Innovation Solution

A unitary shower curb system with a 'C'-shaped cross-section, made of lightweight expanded polystyrene, that integrates a recess for a one-by-four lumber piece, allowing for easy installation with reduced materials and tools, using a vinyl liner for waterproofing and thinset for secure adhesion, eliminating the need for multiple lumber pieces and screws.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If traditional three-tier lumber structure is used to construct shower curb, then water containment function is achieved, but installation time and labor skill requirements increase significantly

Engineering Contradiction:
Improvewater containment functionVSAvoidinstallation time
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The patent combines multiple lumber pieces into a single unitary shower curb structure. The pre-assembled curb integrates the functions of multiple lumber components into one piece that can be installed as a single unit, eliminating the need to stack and secure three separate lumber pieces while maintaining water containment effectiveness.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The shower curb is pre-assembled and pre-cut to proper dimensions before installation. The lumber pieces are joined and configured in advance during manufacturing, so that during installation, the contractor only needs to position and secure the pre-assembled unit rather than constructing it on-site, significantly reducing installation time and skill requirements.

Inventive Principle:
Principle #10Preliminary action

2Reliability

If traditional shower curb installation method is used, then proper water drainage slope can be achieved, but material quantity and tool requirements increase

Engineering Contradiction:
Improvewater drainageVSAvoidmaterial quantity
Core Design Contradiction:
ReliabilityVSQuantity of substance

Solution Approach 1:

The patent integrates the drainage slope feature directly into the unitary shower curb structure. The pre-slope is built-in during manufacturing, eliminating the need for separate pre-slope materials and reducing the quantity of cementation material and other components needed while ensuring proper water drainage toward the shower drain.

Inventive Principle:
Principle #5Merging (Combining)

3Loss of time

If prefabricated shower curbs are used, then installation time is reduced, but manufacturing precision and fit quality worsen

Engineering Contradiction:
Improveinstallation timeVSAvoidfit quality
Core Design Contradiction:
Loss of timeVSManufacturing precision

Solution Approach 1:

The patent employs computerized cutting equipment and automated manufacturing processes to achieve high precision in the unitary shower curb production. By using advanced manufacturing parameters and technologies, the pre-cut curb achieves accurate dimensions and precise fit quality that matches or exceeds traditional on-site craftsmanship, eliminating the typical precision losses associated with prefabrication.

Inventive Principle:
Principle #35Parameter changes

4Reliability

If multiple lumber pieces are stacked to form shower curb, then adequate height for water containment is achieved, but structural complexity and installation difficulty increase

Engineering Contradiction:
Improvewater containment heightVSAvoidcurb structure complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent merges multiple lumber pieces into a single unitary structure that provides the necessary height for water containment. The pre-assembled curb integrates the vertical stacking function into one manufactured piece, eliminating the complexity of stacking and securing multiple separate lumber pieces while maintaining adequate containment height.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The unitary shower curb is designed with internal structural segmentation that provides the equivalent height and strength of multiple stacked pieces. The pre-manufactured structure incorporates internal reinforcement and structural divisions that achieve the same functional result as three-tier stacking but as a unified component, reducing installation complexity.

Inventive Principle:
Principle #1Segmentation

Data Source

PatentUS10028623B1Unitary shower curb system and method of installation of a unitary shower curb system
Publication Date: 2018.07.24 SMITH FREDRICK MICHAEL
  • US10028623B1 patent drawing
  • US10028623B1 patent drawing
  • US10028623B1 patent drawing

AI summary

The present invention is directed toward a prefabricated shower curb system for easily providing a shower area with a water-retaining curb. The prefabricated shower curb system is formed mainly by a body that has a C-shape and includes a recess, and that is preferably manufactured from a rigid foam material such as expanded polystyrene. The body is mounted onto a wood, aluminum, or other support member arranged along a shower floor entrance area. The support member is secured to the shower walls or to an adjacent support member through brackets. A waterproof liner is used to cover and protect the support member. An adhesive material and the tapered interior design of the body recess allow the curb to be firmly secured in place on the supper member. The extraordinary strength, light-weight, low-cost, and easiness of size adjustment make the system novel in the industry.