Frame-Integrated Robotic Window Cleaning for High-Rise Safety

Solution Overview

Problem

Window cleaning operations at high elevations pose significant safety risks to workers, leading to injuries and fatalities, and result in high costs due to safety equipment and insurance premiums.

Innovation Solution

A self-contained robotic window cleaning system that emerges from a pocket in the window frame, featuring a robotic arm that traverses the glass, sprays cleaning water, wipes it off, and recovers waste water for filtration and reuse, eliminating the need for human suspension.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If traditional window cleaning methods are used with workers suspended from scaffolding, then the window cleaning function is achieved, but worker safety is compromised due to fall risks at high elevations

Engineering Contradiction:

Improveworker safetyVSAvoidsafety equipment requirements

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent replaces the mechanical suspension system (scaffolding and ropes) with an automated robotic arm system that operates from ground level or building-integrated pockets. The robotic arm uses articulated joints and motors to position cleaning tools on the window surface, eliminating the need for workers to be suspended at height.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The robotic window cleaning system operates autonomously without requiring human workers to physically access the window. The system self-manages the cleaning process through automated navigation, cleaning tool actuation, and water recovery, making the service self-performing rather than human-dependent.

Inventive Principle:

Principle #25Self-service

2Productivity

If workers are suspended from scaffolding to clean windows, then the cleaning operation can be performed, but operational costs increase due to safety equipment and insurance premiums

Engineering Contradiction:

Improvewindow cleaning operationVSAvoidoperational costs

Core Design Contradiction:

ProductivityVSLoss of energy

Solution Approach 1:

The patent replaces the mechanical suspension system (scaffolding and ropes) with an automated robotic arm system that operates from ground level or building-integrated pockets. The robotic arm uses articulated joints and motors to position cleaning tools on the window surface, eliminating the need for workers to be suspended at height.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The robotic window cleaning system operates autonomously without requiring human workers to physically access the window. The system self-manages the cleaning process through automated navigation, cleaning tool actuation, and water recovery, making the service self-performing rather than human-dependent.

Inventive Principle:

Principle #25Self-service

3Ease of operation

If a robotic arm is stored in a pocket within the window frame, then the system remains concealed when not in use, but the space required for the robotic arm and water reservoir is constrained

Engineering Contradiction:

Improveconcealment when not in useVSAvoidstorage space in window frame

Core Design Contradiction:

Ease of operationVSVolume of stationary object

Solution Approach 1:

The robotic arm is designed to nest within a recess or pocket in the window frame when not in use. The arm folds or retracts into a compact configuration that fits within the available space, similar to a nested doll structure where smaller components are housed within larger ones.

Inventive Principle:

Principle #7Nested doll (Nesting)

Solution Approach 2:

The robotic arm employs dynamic positioning mechanisms that allow it to extend from and retract into the window frame pocket as needed. The system transitions between a compact stored state and an extended operational state, optimizing space utilization while maintaining functionality.

Inventive Principle:

Principle #15Dynamics

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 enables safe and efficient window cleaning without human exposure to high elevations, reducing operational costs and improving safety by automating the process and reusing water.

Implementation Method 1

sprays cleaning water onto the glass

Methodology Applied

Scientific EffectFluid spray: Fluid Spray

Implementation Method 2

presses a wiper blade against the window glass to squeeze the water and any dirt away

Methodology Applied

Scientific EffectFriction: Friction

Implementation Method 3

this water is filtered and returned to a clean water reservoir

Methodology Applied

Scientific EffectFiltration: Filter (physical)

Data Source

PatentUS12274404B2Window cleaning system especially for high-rise buildings

Publication Date: 2025.04.15 GELMI JEAN PIERRE

AI summary

A window with incorporated window cleaning features has a deployable window cleaning robotic arm normally disposed within a compartment at one side of the window frame, and which is normally concealed behind doors. The robotic arm can be deployed by opening the doors, and allowing the arm to move across the window pane, spraying water or cleaning fluid onto the window, and then wiping the window with a rubber blade on the robotic arm. Waste water drains out via a channel in the lower frame member, and returns to a water reservoir in the compartment, where the water is filtered and can be reused.