Trigger Dispenser Vent Sealing for Leak-Free Transport

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Solution Overview

Problem

Trigger dispensing devices experience product leakage through the venting duct during transportation and handling due to inadequate packaging and handling in online commerce, leading to functional compromise and component breakage.

Innovation Solution

A trigger dispensing head with a sleeve and piston system that includes a rotatable sleeve with sealing ridges and a pre-compression valve to prevent product leakage and ensure proper functioning, featuring a suction valve and pre-compression valve integrated into a single component to manage airflow and product flow.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If the venting duct is opened to allow air entry during suction, then the suction function is improved, but product leakage occurs during transport and handling

Engineering Contradiction:

Improvesuction functionVSAvoidproduct leakage

Core Design Contradiction:

ProductivityVSObject-generated harmful factors

Solution Approach 1:

The sealing element is pre-positioned to close the venting duct before transport begins. This preliminary action prevents product leakage during handling and shipping, while allowing the venting duct to be opened later when suction is needed for proper device operation.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The venting duct is designed with a dynamic sealing mechanism that can transition between closed and open states. The sealing element can be moved to close the duct during transport, and opened during operation to allow air entry for suction, thus adapting to different operational requirements.

Inventive Principle:

Principle #15Dynamics

2Device complexity

If standard packaging is used for online commerce shipping, then shipping cost and complexity are reduced, but the device is subjected to impacts and crushing causing component breakage and product leakage

Engineering Contradiction:

Improvepackaging complexityVSAvoiddevice functionality

Core Design Contradiction:

Device complexityVSReliability

Solution Approach 1:

The sealing element provides beforehand protection by closing the venting duct before the device is subjected to transport impacts. This pre-protective measure prevents product leakage and maintains device reliability even when shipped in standard packaging without special protective measures.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

Solution Approach 2:

The device incorporates an self-protecting mechanism where the sealing element automatically secures the venting duct during transport. This self-service feature eliminates the need for complex external packaging or special handling procedures, allowing standard shipping while maintaining device integrity.

Inventive Principle:

Principle #25Self-service

3Object-generated harmful factors

If the sealing element is positioned to close the venting duct during transport, then product leakage is prevented, but air cannot enter the bottle during suction operation

Engineering Contradiction:

Improveproduct leakage preventionVSAvoidsuction operation

Core Design Contradiction:

Object-generated harmful factorsVSEase of operation

Solution Approach 1:

The sealing element is designed to be movable rather than fixed, allowing it to transition between closed and open positions. During transport, it closes the venting duct to prevent leakage; during operation, it can be opened to allow air entry for proper suction function.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The sealing element is pre-positioned to close the venting duct before transport begins. This preliminary protective action can be reversed or adjusted when suction operation is needed, allowing the system to maintain both protection during transport and functionality during use.

Inventive Principle:

Principle #10Preliminary 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

The solution effectively prevents product leakage and maintains device functionality by sealing the venting duct during transport and handling, ensuring reliable operation and reducing component damage.

Implementation Method 1

a sealing element suitable to close said venting duct when said dispensing head is not in use

Methodology Applied

Scientific EffectSealing:

Implementation Method 2

said suction duct (18) has integrated pre-compression valve means comprising a valve element (200) and a resilient membrane (216) arranged between said suction duct (18) and said end wall (36) of said sleeve (30), said pre-compression valve means being suitable to prevent product to pass from said suction duct (18) to said pressure chamber (30a) when said piston (80) is in said initial rest position

Methodology Applied

Scientific EffectPre-compression: Compression

Implementation Method 3

an axially slidable piston (80) sealed inside said sleeve (30) between an initial rest position and a final stroke-end position

Methodology Applied

Scientific EffectAxial translation: Displacement

Data Source

PatentUS12544780B2Trigger dispensing device with means to avoid the loss of product

Publication Date: 2026.02.10 GUALA DISPENSING SPA

AI summary

A trigger dispensing head applicable to a bottle of a trigger dispensing device is provided. The trigger dispensing head has a cylinder chamber, a main vent passageway, a sleeve, a secondary vent passageway, an axially slidable piston, a suction duct, and a dispensing duct. The sleeve is rotatable by a user between an angular working position in which the main vent passageway is in fluid communication with the secondary vent passageway and an angular rest position, in which the main vent passageway is fluidically separated from the secondary vent passageway.