Display Tray Channel and Movable Dividers for Card Retention

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Solution Overview

Problem

Conventional display shelving for greeting cards obstructs viewing and is prone to card slippage and divider breakage, as the front wall must be substantial to prevent cards from falling, which also limits visibility and is structurally weak.

Innovation Solution

A display tray with a J-shaped cross-section and integrated channel for adjustable dividers that prevent card slippage and breakage, featuring a retaining lip and a unique 'twist-in' mechanism for easy placement and adjustment, allowing for better card separation and visibility.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the front wall is made substantial in height to prevent cards from falling, then card retention is improved, but viewing accessibility deteriorates

Engineering Contradiction:
Improvecard retentionVSAvoidviewing accessibility
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The front wall is segmented into multiple horizontal shelves that create individual compartments. Each shelf is supported by vertical dividers, distributing the structural function across multiple elements rather than relying on a single tall wall. This segmentation allows cards to be retained in smaller, more accessible compartments while maintaining overall structural integrity.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The solution transitions from a single vertical dimension (tall front wall) to a multi-dimensional grid structure combining horizontal shelves and vertical dividers. This creates a three-dimensional compartmentalized space that achieves card retention through distributed structural support rather than a monolithic vertical barrier, improving accessibility to individual card compartments.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Reliability

If the front wall is made substantial in height to prevent cards from falling, then card retention is improved, but structural strength deteriorates

Engineering Contradiction:
Improvecard retentionVSAvoidstructural strength
Core Design Contradiction:
ReliabilityVSStrength

Solution Approach 1:

The front wall structure is segmented into multiple horizontal shelves and vertical dividers that work together to provide structural support. This distributes mechanical loads across multiple connection points and structural elements, reducing stress concentration and improving overall structural strength while maintaining card retention functionality.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The display structure combines multiple material types and structural configurations - horizontal shelves, vertical dividers, and connecting elements - creating a composite structural system. This composite approach leverages the strengths of different structural components to achieve superior overall strength and stability compared to a single monolithic wall.

Inventive Principle:
Principle #40Composite materials

3Adaptability or versatility

If divider clips are used to separate cards, then card organization is improved, but reliability deteriorates due to breakage

Engineering Contradiction:
Improvecard organizationVSAvoiddivider durability
Core Design Contradiction:
Adaptability or versatilityVSReliability

Solution Approach 1:

The divider clips are merged with the shelf structure through integrated mounting mechanisms. The dividers are attached to both the front wall and bottom wall, creating a unified structural assembly where the divider and shelf work together as a single robust system, eliminating the weakness of separately attached clips.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The divider clips incorporate curved or angled geometries that distribute mechanical stresses more effectively. The curved design allows for stress redistribution around attachment points, reducing concentration of forces that lead to breakage at rigid connection points.

Inventive Principle:
Principle #14Spheroidality (Curvature)

4Adaptability or versatility

If divider clips are used to separate cards, then card organization is improved, but ease of operation deteriorates due to removal by patrons

Engineering Contradiction:
Improvecard organizationVSAvoiddivider security
Core Design Contradiction:
Adaptability or versatilityVSEase of operation

Solution Approach 1:

The divider clips are merged into the overall shelf structure through multiple attachment points and integrated design. This creates a unified assembly that is structurally integrated rather than easily separable, preventing casual removal by patrons while maintaining the organizational function.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The dividers are pre-installed and pre-positioned as part of the shelf assembly during manufacturing or installation. This preliminary integration ensures proper positioning and secure attachment before the product reaches the customer, eliminating the need for customers to handle or adjust the dividers.

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentUS7913862B2Display tray with movable dividers
Publication Date: 2011.03.29 HALLMARK CARDS INC
  • US7913862B2 patent drawing
  • US7913862B2 patent drawing
  • US7913862B2 patent drawing

AI summary

A combination display tray and divider member are disclosed. The display tray includes a rear wall, a support portion depending outwardly therefrom, and a forward lip for retaining items placed on the display tray. The rear wall includes a channel therein for receiving a base portion of the divider member. A divider portion extends outwardly from the base portion member and generally perpendicular to a longitudinal centerline of the channel of the display tray when the base portion of the divider member is slidably received in the channel.