Mechanical Clutch Dispensing Device for Consistent Strip Dosing

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Solution Overview

Problem

Existing devices for dispensing active ingredient-containing or active-ingredient-carrying strips struggle to ensure consistent dosing and efficient mechanical operation, often relying on battery-powered drives or manual removal methods.

Innovation Solution

A mechanical device with a shift clutch transmission system allows for incremental, manual actuation of the output roller, enabling precise control over the rotation and separation of strips, using a gear drive mechanism with a pressure roller to convey the tape and a separating device to release individual strips.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Extent of automation

If a battery-powered electric drive is used to convey the strip, then the dosing can be controlled electrically, but the device complexity and energy requirements increase

Engineering Contradiction:

Improveelectric control of dosingVSAvoiddevice structure

Core Design Contradiction:

Extent of automationVSDevice complexity

Solution Approach 1:

The patent replaces the battery-powered electric drive system with a purely mechanical clutch transmission system. The clutch mechanism allows manual engagement and disengagement of the drive gear, eliminating the need for batteries and electric motors while maintaining controlled dispensing functionality through mechanical means.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The clutch mechanism is designed to be manually operable by the user, allowing direct control of the dispensing process without requiring external power sources or complex electronic control systems. The user directly engages the clutch to advance the strip, making the system self-sufficient.

Inventive Principle:

Principle #25Self-service

2Device complexity

If manual actuation is used to advance the strip, then the device structure is simpler, but the dosing precision may be reduced

Engineering Contradiction:

Improvedevice structureVSAvoiddosing accuracy

Core Design Contradiction:

Device complexityVSMeasurement precision

Solution Approach 1:

The clutch mechanism serves as an intermediary between manual user input and the strip advancement system. It translates manual rotational motion into precise, controlled advancement of the strip through the gear train, ensuring consistent dosing precision while maintaining simple mechanical operation.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The clutch mechanism enables periodic, incremental advancement of the strip with each manual actuation. This periodic action ensures that the strip is advanced by precise, repeatable amounts, maintaining dosing accuracy while using simple manual operation.

Inventive Principle:

Principle #19Periodic action

3Productivity

If the strip is conveyed continuously, then the dispensing speed increases, but the ability to control individual strip separation decreases

Engineering Contradiction:

Improvedispensing speedVSAvoidstrip separation control

Core Design Contradiction:

ProductivityVSEase of operation

Solution Approach 1:

The clutch mechanism provides dynamic control over strip conveyance, allowing the user to engage or disengage the drive at will. This enables the strip to be advanced continuously when needed for speed, or stopped precisely between individual strips for controlled separation, adapting to different dispensing requirements.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The clutch mechanism divides the continuous conveyance process into discrete, controllable segments. Each engagement of the clutch advances the strip by a specific increment, allowing precise control over when and how individual strips are separated and dispensed, rather than continuous uncontrolled movement.

Inventive Principle:

Principle #1Segmentation

Data Source

PatentEP3448348B1Device and method for dispensing drug-containing or active ingredient-containing strips

Publication Date: 2024.10.16 LTS LOHMANN THERAPIE SYST AG

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AI summary

The invention relates to a device for dispensing active ingredient-containing or active ingredient-carrying strips, comprising a housing in which a coil chamber for receiving an active ingredient-containing or active ingredient-carrying band is arranged, in which a gear transmission with a driven roller for conveying the band is mounted, and in which a separating device for separating the strips from the band is arranged. The invention also relates to a method for dispensing active ingredient-containing or active ingredient-carrying strips using such a device. An active ingredient-containing or active ingredient-carrying band is arranged between the driven roller and the pressure roller. A shift clutch transmission is arranged upstream of the gear transmission. The shift clutch transmission has a manually actuatable trigger element. The driven roller can be driven in incremental steps by means of the shift clutch transmission. By using the invention, a device and a method for dispensing active ingredient-containing or active ingredient-carrying strips with a largely equal dosage are developed.