Apron-Front Sink Ledge and Lateral Extension for Standard Cabinet Fit

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Solution Overview

Problem

Apron-front sinks face challenges in fitting into standard cabinetry due to width and height incompatibility, requiring extensive modifications or undersized installations, and have difficulties with accessory compatibility and installation precision.

Innovation Solution

The design includes a sink with a front apron that extends laterally beyond the rim to conceal cut lines and provide a supporting surface for accessories, and ledges positioned below the rim to support items partially below the countertop, allowing for easier installation and compatibility with various cabinetry configurations.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Volume of moving object

If apron-front sink is designed with standard width and height, then it provides adequate basin space, but it cannot fit into standard cabinetry without extensive modifications

Engineering Contradiction:
Improvebasin spaceVSAvoidcompatibility with standard cabinetry
Core Design Contradiction:
Volume of moving objectVSAdaptability or versatility

Solution Approach 1:

The sink design extends the apron laterally beyond the rim plane, utilizing the horizontal dimension to conceal cut lines and accommodate cabinet thickness. This dimensional extension allows the sink to fit standard cabinetry depths while maintaining adequate basin volume, resolving the conflict between basin space and cabinet compatibility.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Manufacturing precision

If apron-front sink requires precise fitting to cabinet front, then it achieves flush alignment, but it requires repeated cuts and heavy lifting during installation

Engineering Contradiction:
Improveflush alignment with cabinetVSAvoidinstallation process
Core Design Contradiction:
Manufacturing precisionVSEase of manufacture

Solution Approach 1:

The design extracts the precise fitting requirement from the critical path by extending the apron laterally to conceal cut lines. This allows installers to make approximate cuts without compromising the final appearance, eliminating the need for repeated precision adjustments and heavy sink handling during fitting iterations.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The lateral extension of the apron is designed in advance to cover the cabinet cut lines. This preliminary design feature ensures that even if cuts are not perfectly precise, the extended apron will conceal any gaps, allowing installation to proceed without repeated adjustments.

Inventive Principle:
Principle #10Preliminary action

3Shape

If apron-front sink has wide apron to conceal cut lines, then it provides better aesthetic appearance, but it reduces compatibility with standard cabinet dimensions

Engineering Contradiction:
Improveaesthetic appearanceVSAvoidcompatibility with standard cabinet
Core Design Contradiction:
ShapeVSAdaptability or versatility

Solution Approach 1:

The apron is extended laterally only at the front edges where aesthetic concealment is needed, while the rest of the sink maintains standard dimensions. This localized extension provides the necessary aesthetic appearance without significantly increasing overall sink width, thereby maintaining compatibility with standard cabinet dimensions.

Inventive Principle:
Principle #3Local quality

4Manufacturing precision

If apron-front sink is designed for custom cabinet fitting, then it achieves precise alignment, but it cannot be retrofitted into existing standard cabinets

Engineering Contradiction:
Improvealignment precisionVSAvoidretrofit capability
Core Design Contradiction:
Manufacturing precisionVSAdaptability or versatility

Solution Approach 1:

The sink design incorporates universal features including lateral apron extension to conceal various cabinet cut line positions, adjustable ledge heights to accommodate different countertop configurations, and standardized mounting provisions. These multi-functional design elements enable the same sink model to achieve precise alignment across different standard cabinet sizes and retrofit scenarios without requiring custom modifications.

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

Data Source

PatentEP3901384B1Apron-front sink
Publication Date: 2024.04.17 KOHLER CO(US)
  • EP3901384B1 patent drawingFigure 1
  • EP3901384B1 patent drawingFigure 2
  • EP3901384B1 patent drawingFigure 3

AI summary

An undermount, apron-front sink (100) is provided. The sink (100) includes a basin (101), a ledge (200, 220), a rim (130) coupled with the basin (101), an upper portion (206, 226), and an apron (140). The basin (101) includes a first side wall (122), an opposite second side wall (123), a front wall (121), and a rear wall (124). The ledge (200, 220) is supported at and extends outwardly from an upper end of one of the front wall (121) and the rear wall (124) of the basin (101). The rim (130) is supported at and extends outwardly from the basin (101) in a substantially horizontal orientation to form a continuous planar surface that is configured to be mounted abutting an underside of a horizontal countertop. The upper portion (206, 226) extends between the ledge (200, 220) and the one of the front wall (121) and the rear wall (124). The apron (140) is coupled with the basin (101) and includes a right end portion (160), a left end portion (150), a front face (142), and a rear face (149).