Integrated Lavatory Station Layout for Accessible Hands-Free Use

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Solution Overview

Problem

Conventional lavatory systems require multiple custom-designed components for varying heights, which complicates installation and accessibility, especially for users with disabilities, and often lack efficient sanitation and accessibility features.

Innovation Solution

A modular lavatory system with integrated hand washing stations at different heights, featuring a control system that inhibits simultaneous activation of fixtures, powered by renewable energy, and equipped with sensors for hands-free operation, along with a mounting system allowing adjustable installation heights to comply with accessibility standards.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If multiple custom-designed lavatory systems are installed at various heights, then accessibility for users of different abilities is improved, but device complexity and manufacturing cost increase

Engineering Contradiction:
Improveaccessibility for users of different abilitiesVSAvoiddevice complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent applies universality by designing a single lavatory system that can be mounted at multiple heights to serve different user needs. The system includes adjustable mounting mechanisms and articulated panels that allow the same unit to accommodate wheelchair users, standing users, and children, eliminating the need for multiple custom-designed systems for different height requirements.

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

Solution Approach 2:

The patent implements dynamics through articulated panels that can move between closed and opened positions, and mounting systems that allow height adjustment. This dynamic capability enables the fixed physical structure to adapt to different accessibility requirements, resolving the contradiction between maintaining a simple device design and achieving versatility for different users.

Inventive Principle:
Principle #15Dynamics

2Adaptability or versatility

If multiple custom-designed lavatory systems are installed at various heights, then accessibility for users of different abilities is improved, but manufacturing cost and installation complexity increase

Engineering Contradiction:
Improveaccessibility for users of different abilitiesVSAvoidmanufacturing cost
Core Design Contradiction:
Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

The patent applies universality by designing a single lavatory system that can be mounted at multiple heights to serve different user needs. The system includes adjustable mounting mechanisms and articulated panels that allow the same unit to accommodate wheelchair users, standing users, and children, eliminating the need for multiple custom-designed systems for different height requirements.

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

3Ease of operation

If fixtures are activated simultaneously without control, then user convenience is improved, but energy waste and operational efficiency deteriorate

Engineering Contradiction:
Improveuser convenienceVSAvoidenergy waste
Core Design Contradiction:
Ease of operationVSLoss of energy

Solution Approach 1:

The patent implements feedback through a control system that monitors sensor inputs and adjusts fixture activation accordingly. The control system receives signals from sensors detecting hand presence and determines the appropriate sequence and timing for activating fixtures, preventing simultaneous activation and the associated energy waste while maintaining user convenience through automated response.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The patent applies periodic action through a control system that activates fixtures in a predetermined sequence based on sensed conditions. Rather than simultaneous activation, the system uses timing algorithms to sequence fixture operation, reducing energy consumption while maintaining the appearance of immediate response to user needs.

Inventive Principle:
Principle #19Periodic action

4Reliability

If hands-free operation with sensors is implemented, then sanitation and accessibility are improved, but device complexity increases

Engineering Contradiction:
ImprovesanitationVSAvoiddevice complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent implements self-service through sensor-activated fixtures that automatically detect hand presence and initiate appropriate sequences of fixture activation without requiring user interaction. The system monitors conditions and autonomously controls water flow, soap dispensing, and hand dryer operation, eliminating the need for manual operation while maintaining sanitation through contactless operation.

Inventive Principle:
Principle #25Self-service

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 system provides efficient, accessible, and sanitary hand washing facilities for users of varying abilities by allowing adjustable installation heights, hands-free operation, and simultaneous use of fixtures without compromising accessibility standards, while utilizing renewable energy for sustainability.

Implementation Method 1

The lavatory system is powered by renewable energy... an array of photovoltaic cells coupled to the panel and coupled to the energy storage element

Methodology Applied
Scientific EffectPhotovoltaic effect: Photovoltaic Effect

Data Source

PatentUS8296875B2Lavatory system
Publication Date: 2012.10.30 BRADLEY FIXTURES CORP
  • US8296875B2 patent drawing
  • US8296875B2 patent drawing
  • US8296875B2 patent drawing

AI summary

A lavatory system is disclosed to include one or more integrated hand washing stations. Each hand washing station includes a basin, a faucet, a solenoid valve configured to control water flow to the faucet, and a electric hand dryer located adjacent the basin and the faucet so that the user of the washing station may use the faucet and the electric hand dryer without leaving the washing station. The electric hand dryer preferably includes an outlet to direct air across the associated basin so that any water that drips from the user's hands will fall within the basin. A control system may be provided to control activation of the fixtures such as the solenoid valve, the electric hand dryer, and/or soap dispenser. The control system may be configured, for example, to inhibit simultaneous activation of the solenoid valve and the hand dryer. A photovoltaic system may be provided to provide power to one or more of electrical fixtures.