Flexible Slit-Based Dispensing Device for Controlled Material Flow

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Solution Overview

Problem

Existing material dispensing devices are inefficient in dispensing solid, liquid, and semi-liquid substances, often leading to accidental leakage and lack of user control over the dispensing process.

Innovation Solution

A flexible hollow housing with slits that remain closed by default but open with a manual lateral force, allowing controlled dispensing through gravity when oriented correctly, and a removable cap for secure sealing.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If traditional dispensing mechanisms are used, then material can be dispensed, but accidental leakage occurs and user control is lost

Engineering Contradiction:

Improvecontrol over dispensingVSAvoidmechanism complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent removes complex traditional dispensing mechanisms (augers, motors, valves) and extracts only the essential function: a flexible housing with slits that opens under lateral force. This eliminates the source of leakage while maintaining dispensing capability, directly resolving the contradiction between reliability and complexity.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The flexible housing automatically controls the slit opening state based on applied lateral force, eliminating the need for external control mechanisms. The system self-regulates material flow based on user input, improving reliability without adding complexity.

Inventive Principle:

Principle #25Self-service

2Ease of operation

If the housing is rigid, then structural stability is maintained, but controlled opening for dispensing becomes difficult

Engineering Contradiction:

Improvecontrolled openingVSAvoidhousing stability

Core Design Contradiction:

Ease of operationVSStrength

Solution Approach 1:

The patent employs a flexible housing made of elastomeric material that can deform under lateral force to open the slits, then return to its original stable shape when force is released. This flexibility enables easy controlled opening while the material properties maintain structural stability, resolving the contradiction between ease of operation and strength.

Inventive Principle:

Principle #30Flexible shells and thin films

Solution Approach 2:

The housing transitions from a static rigid structure to a dynamic flexible structure that can change shape in response to user input. The elastomeric material allows the housing to dynamically open and close slits while maintaining overall structural integrity, balancing operational ease with stability.

Inventive Principle:

Principle #15Dynamics

3Productivity

If slits are always open, then material flow is unrestricted, but accidental leakage occurs

Engineering Contradiction:

Improvematerial flow rateVSAvoidprevention of accidental leakage

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The slits transition from a static open/closed state to a dynamic state that responds to lateral force. When force is applied, slits open for high productivity; when force is released, slits close to prevent leakage. This dynamic behavior resolves the contradiction between unrestricted flow and leakage prevention.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The flexible housing structure is designed to automatically close slits when lateral force is removed, creating a preliminary protective action against potential leakage before it can occur. This passive safety mechanism ensures reliability without restricting productivity during intentional dispensing.

Inventive Principle:

Principle #9Preliminary anti-action

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

Provides controlled and mess-free dispensing of materials in various orientations, ensuring user convenience and preventing accidental leakage.

Implementation Method 1

a first flexible hollow housing having a proximal end and a distal end... configured to open only when a user applies a manual lateral force to external surfaces of the first flexible hollow housing

Methodology Applied

Scientific EffectElasticity: Elasticity

Implementation Method 2

allowing controlled dispensing through gravity when oriented correctly

Methodology Applied

Scientific EffectGravity: Gravitation

Data Source

PatentUS12522407B2Material dispensing device

Publication Date: 2026.01.13 MADANAT SAHAR

AI summary

There is provided a material dispensing device that may include a first flexible hollow housing (5); a second flexible hollow housing (7), each of the first and second flexible hollow housings (5, 7) may have a proximal end (50, 70) and a distal end (51, 71); and a removable connector (6) configured to be separably connected to the proximal ends (50, 70) of the first and second flexible hollow housings (5, 7), thus defining a first compartment and a second compartment. Each of the first and second flexible hollow housings (5, 7) may have one or more slits (500, 700) in proximity to a corresponding distal end (51, 71), wherein each of the one or more slits (500, 700) may have a normally closed state and may be configured to open only when a user applies a manual lateral force to external surfaces of the first and/or second flexible hollow housings (5, 7) in proximity to a corresponding distal end (51, 71), thus allowing materials enclosed in the first and/or second compartments to pass through the one or more slits (500, 700) to the outside of such compartments.