Drop-In Sink Ledge Structure for Stable Countertop Seating

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Solution Overview

Problem

Existing sink designs, particularly drop-in sinks, face issues with improper seating, gaps between the sink and countertop, and insufficient flange support, leading to durability and sustainability concerns, especially with limited counter space and the need for multi-workstation functionality.

Innovation Solution

A sink design featuring a thicker ledge with a different thickness than the sidewalls and bottom surface, including a beveled outer part and a divider, which is welded to the sidewalls and bottom surface, providing enhanced support and stability while maintaining the sink's volume and allowing for multiple basins without reducing inner space.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of substance

If a thin flange is used in traditional drop-in sinks, then the sink can be manufactured with less material and lower cost, but the flange provides insufficient support for the weight of the basin and creates gaps between the sink and countertop

Engineering Contradiction:

Improvematerial usageVSAvoidflange support capability

Core Design Contradiction:

Loss of substanceVSStrength

Solution Approach 1:

The patent applies local quality by making the ledge (flange) thickness different from the basin wall thickness. Specifically, the ledge has a greater thickness than the basin walls, concentrating material where support is needed at the countertop interface while maintaining thinner walls elsewhere to reduce overall material usage. This resolves the contradiction by providing localized reinforcement exactly where structural support is critical.

Inventive Principle:

Principle #3Local quality

2Ease of manufacture

If traditional stamping or punching methods are used to manufacture stainless steel sinks, then the manufacturing process is simple and cost-effective, but the process creates rounded or beveled edges that result in undesirable gaps between the sink edges and countertop

Engineering Contradiction:

Improvemanufacturing process simplicityVSAvoidedge flatness

Core Design Contradiction:

Ease of manufactureVSManufacturing precision

Solution Approach 1:

The patent applies preliminary action by forming the ledge with a substantially flat outer surface during the manufacturing process itself, rather than attempting to correct edge curvature after stamping or punching. The forming step creates the flat ledge surface in advance, eliminating the need for post-processing and ensuring proper seating on the countertop while maintaining the simplicity of the overall manufacturing process.

Inventive Principle:

Principle #10Preliminary action

3Area of stationary object

If the sink size is reduced to accommodate limited counter space, then the sink can fit in smaller kitchens and bathrooms, but the inner space volume decreases reducing functionality for food preparation and washing

Engineering Contradiction:

Improvecounter space occupancyVSAvoidsink inner space volume

Core Design Contradiction:

Area of stationary objectVSVolume of moving object

Solution Approach 1:

The patent applies dimensionality change by optimizing the vertical dimension (ledge thickness) to compensate for reductions in horizontal dimensions. By increasing the ledge thickness to provide structural support, the sink can have smaller overall footprint while maintaining adequate inner volume. The thicker ledge acts as a structural envelope that allows the basin interior to maintain volume even when the sink's external dimensions are reduced for space-constrained installations.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

4Adaptability or versatility

If a divider is added to create multiple basins for different functions, then the sink becomes more versatile for multi-workstation use, but the divider reduces the inner space volume of each basin

Engineering Contradiction:

Improvemulti-workstation functionalityVSAvoidbasin inner space volume

Core Design Contradiction:

Adaptability or versatilityVSVolume of moving object

Solution Approach 1:

The patent applies segmentation by dividing the sink basin into multiple functional zones using a divider, creating distinct workstations for different tasks such as washing and food preparation. The divider is integrated into the sink structure with proper thickness and attachment, organizing the interior space into separate functional areas that can be optimized for specific purposes while maintaining overall sink efficiency.

Inventive Principle:

Principle #1Segmentation

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The design ensures a durable and sustainable sink with improved mounting stability, reduced gaps, and increased functionality as a multi-workstation sink, addressing the limitations of traditional sink manufacturing methods and space constraints.

Implementation Method 1

a ledge welded to top ends of the first, second, third, and fourth sidewalls

Methodology Applied

Scientific EffectWelding: Welding

Implementation Method 2

an outer part of the ledge is beveled

Methodology Applied

Scientific EffectMechanical Fastening: Mechanical Fastener

Data Source

PatentUS11697931B2Sinks and methods of making the same

Publication Date: 2023.07.11 KRAUS USA PLUMBING LLC

AI summary

A sink includes a bottom surface forming an opening for drainage therein, a first sidewall, a second sidewall, a third sidewall, and a fourth sidewall. A divider is fixedly attached to a linear opening in the first and third sidewalls and the bottom surface.