Liquid Delivery Assembly With Dual-Passage Needle for Leak-Free Floor Cleaning

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Solution Overview

Problem

Conventional floor cleaning apparatuses face issues with detergent leakage, unreliable liquid detergent flow, and complex, bulky construction, which increase manufacturing costs.

Innovation Solution

A floor cleaning apparatus with a cleaning head, upstanding portion, handle, and a liquid delivery assembly that includes a sealed storage container, multiple chambers, and conduits for controlled liquid and gas flow, ensuring efficient detergent distribution without leakage.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a built-in fluid detergent supply unit is provided in the floor cleaning apparatus, then the convenience of use is improved and a separate detergent bottle is not needed, but detergent leakage problems arise

Engineering Contradiction:
Improveconvenience of useVSAvoiddetergent leakage
Core Design Contradiction:
Ease of operationVSObject-generated harmful factors

Solution Approach 1:

The liquid delivery assembly is divided into multiple separate chambers (first chamber for liquid detergent, second chamber for cleaning fluid, third chamber for air/gas) that are connected through defined passageways. This segmentation allows independent control and containment of different substances, preventing leakage while maintaining integrated functionality.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

A needle component with separated first and second passageways acts as an intermediary structure connecting the sealed liquid storage container to the chambers. The needle provides controlled fluid communication pathways that prevent uncontrolled leakage while enabling reliable detergent flow to the cleaning head.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Device complexity

If a conventional liquid delivery system is used in the floor cleaning apparatus, then the construction is simple, but unreliable flow of liquid detergent occurs

Engineering Contradiction:
Improveconstruction simplicityVSAvoidliquid detergent flow reliability
Core Design Contradiction:
Device complexityVSReliability

Solution Approach 1:

The system incorporates a third chamber that allows gaseous communication with the sealed liquid storage container and an inlet for surrounding air or gas to enter. This pneumatic component enables pressure equalization and controlled liquid flow through the needle passageways to the cleaning head, ensuring reliable detergent delivery.

Inventive Principle:
Principle #29Pneumatics and hydraulics

Solution Approach 2:

The liquid delivery assembly integrates multiple functions into a single unit: it stores liquid detergent in a sealed container, delivers it through controlled passageways, incorporates pneumatic pressure equalization, and provides cleaning fluid supply. This multi-functional design ensures reliable operation while maintaining reasonable construction simplicity.

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

3Reliability

If a built-in fluid detergent supply unit with multiple components is provided, then detergent flow control is improved, but complications and bulkiness of construction increase

Engineering Contradiction:
Improvedetergent flow controlVSAvoidconstruction bulkiness
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The first chamber, second chamber, third chamber, and associated passageways are merged into a single integrated liquid delivery assembly that connects to the cleaning head. This consolidation provides reliable detergent flow control through defined pathways while reducing overall construction bulkiness compared to separate components.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The needle with separated passageways is nested within the liquid delivery assembly structure, with chambers arranged adjacent to each other. The sealed liquid storage container is positioned to connect to the needle passageways. This nested arrangement achieves reliable flow control while minimizing the overall footprint and construction complexity.

Inventive Principle:
Principle #7Nested doll (Nesting)

4Adaptability or versatility

If a built-in fluid detergent supply unit is provided, then the functionality is enhanced, but manufacture cost increases

Engineering Contradiction:
Improvefunctionality enhancementVSAvoidmanufacture cost
Core Design Contradiction:
Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

The liquid delivery assembly is segmented into distinct chambers and passageways that can be manufactured as separate components and then assembled. This segmentation enables modular manufacturing, reducing production complexity and cost while maintaining enhanced functionality for controlled detergent delivery.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The integrated liquid delivery assembly performs multiple functions (liquid storage, controlled delivery, pneumatic pressure equalization, cleaning fluid supply) within a single manufacturable unit. This multi-functionality reduces the need for multiple separate components, thereby lowering manufacture cost while enhancing overall system functionality.

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

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 solution provides a reliable, leak-free, and efficient delivery of cleaning detergent, enhancing the cleaning process while reducing manufacturing costs and complexity.

Implementation Method 1

a first passageway allowing fluid communication between the sealed liquid storage container and the first chamber

Methodology Applied
Scientific EffectFluid flow through passageway:

Implementation Method 2

a second passageway allowing gaseous communication between the third chamber and the sealed liquid storage container

Methodology Applied
Scientific EffectGas flow through passageway:

Implementation Method 3

the first chamber may be provided with a second aperture for fluid communication with the fourth chamber, and the second aperture may be reciprocatingly closable by a second one-way valve

Methodology Applied
Scientific EffectSpring-loaded valve mechanism: Spring

Implementation Method 4

the first chamber may be provided with a first aperture for fluid communication with the second chamber, and the first aperture may be reciprocatingly closable by a first one-way valve

Methodology Applied
Scientific EffectOne-way valve mechanism: Valve

Data Source

PatentUS12290223B2Floor cleaning apparatus and liquid delivery assembly for use in floor cleaning apparatus
Publication Date: 2025.05.06 HAYCO MFG LTD
  • US12290223B2 patent drawing
  • US12290223B2 patent drawing
  • US12290223B2 patent drawing

AI summary

A floor cleaning apparatus. The apparatus has a cleaning head portion for engaging a floor surface during cleaning, an upstanding portion for maneuvering movement of the cleaning head portion, a liquid delivery assembly, a handle portion extending from the upstanding portion and a sealed liquid storage container. The assembly includes a single needle defining a first passageway for allowing cleaning detergent from the sealed storage container to travel to the cleaning head portion therethrough and a second passageway for allowing as or air to travel from the surrounding to the sealed storage container for pressure equalization, and wherein the needle has a non-cylindrical configuration and a flattened configuration.