Slide and Shell Container Asymmetric Access Opening Design

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Solution Overview

Problem

Conventional slide and shell containers for elongate smoking articles suffer from aesthetically undesirable gaps between the inner slide and outer shell, leading to potential loss of goods, and do not effectively utilize the projecting portion of the inner slide for branding and information display.

Innovation Solution

A slide and shell container design where the access openings in the outer shell and inner slide are offset, allowing the inner slide to project outward fully in the open position, providing a larger surface area for branding and preventing accidental opening, with retention means to restrict further slidable movement beyond the open position, and using cut-outs or apertures for easy sliding.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Area of moving object

If the inner slide projects outwardly from the outer shell in the open position, then the external surface area for branding is increased, but gaps remain between the inner slide and outer shell leading to potential loss of goods

Engineering Contradiction:
Improveexternal surface area of inner slideVSAvoidprevention of goods loss
Core Design Contradiction:
Area of moving objectVSReliability

Solution Approach 1:

The access openings in the outer shell and inner slide are positioned asymmetrically relative to each other. When the container is in the closed position, the access opening in the outer shell is offset from the access opening in the inner slide, preventing alignment and thus preventing goods from being accidentally removed while maintaining the ability to fully close the container.

Inventive Principle:
Principle #4Asymmetry

2Area of moving object

If the inner slide projects outwardly from the outer shell, then branding visibility is enhanced, but the container cannot be fully closed

Engineering Contradiction:
Improveexternal surface area for brandingVSAvoidclosure completeness of container
Core Design Contradiction:
Area of moving objectVSShape

Solution Approach 1:

The asymmetric positioning of access openings allows the inner slide to project outwardly from the outer shell in the open position, maximizing the external surface area available for branding while ensuring that the access openings do not align when closed, thereby maintaining full closure capability.

Inventive Principle:
Principle #4Asymmetry

3Reliability

If access openings are positioned to allow full closure, then goods loss is prevented, but branding surface area is reduced

Engineering Contradiction:
Improveprevention of goods lossVSAvoidexternal surface area for branding
Core Design Contradiction:
ReliabilityVSArea of moving object

Solution Approach 1:

By positioning the access openings asymmetrically, the design achieves both objectives: the inner slide can project outwardly to provide maximum branding surface area, while the offset positioning ensures that when closed, the access openings do not align, preventing goods loss.

Inventive Principle:
Principle #4Asymmetry

4Reliability

If retention means are added to restrict slidable movement beyond open position, then device complexity is increased, but reliability of closure is improved

Engineering Contradiction:
Improveclosure reliabilityVSAvoidstructure complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The asymmetric positioning of access openings inherently provides closure reliability by preventing alignment when closed, eliminating the need for additional retention means and thus avoiding increased device complexity while maintaining reliable closure.

Inventive Principle:
Principle #4Asymmetry

Data Source

PatentUS7866466B2Slide and shell container
Publication Date: 2011.01.11 PHILIP MORRIS USA INC
  • US7866466B2 patent drawing
  • US7866466B2 patent drawing
  • US7866466B2 patent drawing

AI summary

A slide and shell container, which finds particular application as a pack for elongate smoking articles such as cigarettes, and which includes an outer shell having a first access opening; and an inner slide having a second access opening. The inner slide is mounted within the outer shell for slidable movement relative thereto between a closed position, in which the second access opening is occluded by the outer shell and the interior of the inner slide is inaccessible, and an open position, in which the second access opening is substantially aligned with the first access opening such that the interior of the inner slide is accessible through the first and second access openings.