Universal Snap-Lid Storage Container System

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Solution Overview

Problem

Conventional storage containers face issues with lid separation, unstable stacking, and inefficient storage and transport due to rigid designs and size-specific lids, leading to frustration and space inefficiency.

Innovation Solution

The storage container system features universal lids with snap features that allow for lid-to-lid and lid-to-base connections, enabling versatile configurations for stacking and secure storage, including identical or varying capacities, and materials like polypropylene for durability and flexibility.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If lids are attached to the bottom of container bases, then lid and container organization is improved, but space efficient stacking is hindered

Engineering Contradiction:
Improvelid and container organizationVSAvoidstacking space efficiency
Core Design Contradiction:
Ease of operationVSVolume of moving object

Solution Approach 1:

The attachment system is segmented into separate male and female fasteners positioned at opposite ends of the lid, allowing the lid to attach to the container base while maintaining stacking capability. This segmentation enables independent attachment points that resolve the conflict between organization and stacking efficiency.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The fasteners are positioned at the horizontal ends of the lid rather than vertically at the bottom, changing the attachment dimension from vertical (hindering stacking) to horizontal (allowing stacking). This dimensional shift enables both organization and space-efficient stacking to coexist.

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

2Reliability

If size-specific lids are used for different container capacities, then proper fit and sealing is improved, but lid loss and misplacement increases

Engineering Contradiction:
Improvelid fit and sealingVSAvoidlid identification and matching
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The male and female fasteners are designed with universal compatibility across different container sizes. The fastener geometry remains consistent while the lid diameter varies, allowing any lid to attach to any container base. This universality maintains proper fit through the fastener mechanism while eliminating lid loss and misplacement issues.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The fastener system acts as an intermediary mechanism that decouples the relationship between lid size and container size. Instead of direct size-matching, the fasteners mediate the connection, allowing lids to be identified and matched simply by the presence of compatible fasteners rather than complex size correspondence.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Device complexity

If small male and female connectors are used on bases and lids, then attachment mechanism is simplified, but stacking stability is reduced

Engineering Contradiction:
Improveattachment mechanism simplicityVSAvoidstack stability
Core Design Contradiction:
Device complexityVSStability of the object's composition

Solution Approach 1:

The male and female fasteners are pre-positioned at the horizontal ends of the lid before stacking occurs. This preliminary positioning ensures that when containers are stacked, the fasteners are already aligned and engaged, providing immediate stability without requiring complex adjustment mechanisms during the stacking action.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The fasteners utilize horizontal positioning at the lid ends rather than vertical positioning, changing the stacking interaction from a single-point vertical connection to a distributed horizontal connection. This dimensional change increases the effective contact area and improves stack stability while maintaining simple connector geometry.

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

Data Source

PatentUS8777043B2Storage container and container system
Publication Date: 2014.07.15 RUBBERMAID
  • US8777043B2 patent drawing
  • US8777043B2 patent drawing
  • US8777043B2 patent drawing

AI summary

A storage container system has a plurality of container bases and a plurality of lids for the bases. Each of the bases has a bottom, a continuous side wall extending up from the bottom and terminating at a top edge, an interior storage space within the side wall above the bottom, and an open top bounded by the top edge. Each of the lids has a main panel section, a perimeter skirt assembly around the main panel section, a top side, and a bottom side. Each of the plurality of lids is configured to close off the open top of any one of the plurality of container bases by connecting the perimeter skirt assembly to the side wall near the open top. A first snap structure is provided on each of the plurality of lids. Each first snap structure has one component configured to connect to a mating lid component of the first snap structure on any other one of the plurality of lids to connect any two of the plurality of lids together. A second snap structure different from the first snap structure is also provided on each of the plurality of lids. The second snap structure is configured to connect to a mating base component on the bottom of the base to connect any one of the plurality of lids to any one of the plurality of container bases.