Dual Compartment Sandwich Container With Rotatable Divider

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Solution Overview

Problem

Conventional food containers fail to maintain the freshness of sandwiches by allowing bread to become soggy and ingredients to spoil prematurely, especially in warm weather, due to the lack of effective moisture and heat isolation between compartments.

Innovation Solution

A dual compartment sandwich container with pivotally connected upper and lower compartments, a rotatable divider for moisture isolation, and a removable hot/cold pack to maintain temperature integrity, made from a rigid and transparent material for visibility and ease of cleaning.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Temperature

If conventional food containers use ice cubes or insulating material, then temperature control is improved, but moisture isolation between compartments is insufficient causing bread to become soggy

Engineering Contradiction:
Improvetemperature controlVSAvoidmoisture isolation effectiveness
Core Design Contradiction:
TemperatureVSReliability

Solution Approach 1:

The container is divided into separate compartments for bread and wet ingredients, with a divider that can be positioned to isolate the bread from moisture. This segmentation prevents the bread from becoming soggy while allowing independent temperature control of each compartment.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

A divider structure acts as an intermediary element between the bread compartment and the wet ingredients compartment. This divider can be positioned to create a moisture barrier while still allowing the container to function as a unified structure for temperature control.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Reliability

If compartments are separated to isolate bread from wet ingredients, then freshness preservation is improved, but device complexity increases due to additional divider mechanisms

Engineering Contradiction:
Improvefreshness preservationVSAvoiddivider mechanism complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The divider is designed to be movable rather than fixed, allowing it to be positioned in different configurations. This dynamic element can be adjusted to create separation when needed and removed or repositioned when not needed, providing flexibility without requiring a complex fixed structure.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The divider serves multiple functions: it acts as a moisture barrier, provides structural support, and can be positioned to accommodate different sandwich configurations. This multi-functionality reduces the need for additional specialized components, simplifying the overall device complexity.

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

3Reliability

If a removable hot/cold pack is added to maintain temperature, then ingredient freshness is improved, but ease of operation decreases due to additional removal steps

Engineering Contradiction:
Improveingredient freshnessVSAvoidpack removal convenience
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The hot/cold pack is designed to be easily removable by the user through a simple pulling motion using a tab or handle. This self-service design allows the user to independently remove or reposition the pack without requiring tools or complex mechanisms, maintaining ease of operation while providing temperature control functionality.

Inventive Principle:
Principle #25Self-service

4Ease of operation

If container is made from rigid transparent material for visibility and cleaning, then ease of cleaning and visual access are improved, but thermal insulation performance worsens

Engineering Contradiction:
Improvecleaning ease and visual accessVSAvoidthermal insulation performance
Core Design Contradiction:
Ease of operationVSTemperature

Solution Approach 1:

The container utilizes composite material construction, combining rigid transparent material for the main body with insulating materials in specific regions (such as the lid or base). This composite approach maintains the visual access and cleaning advantages of transparent material while adding thermal insulation where most needed to protect the contents.

Inventive Principle:
Principle #40Composite materials

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 container effectively isolates dry bread from wet ingredients, preventing moisture transfer and maintaining the freshness of sandwich ingredients over a prolonged period, ensuring the bread remains edible and the ingredients remain fresh until consumption.

Implementation Method 1

The hot/cold pack is adapted to retain heat or cold for a prolonged period of time after first being heated or cooled

Methodology Applied
Scientific EffectThermal energy storage: Thermal Energy Storage

Implementation Method 2

The divider is characterized by a low thermal conductivity to prevent the transfer of heat or cold (that is associated with the ingredients of the sandwich) from the lower compartment to the bread carried in the upper compartment

Methodology Applied
Scientific EffectThermal insulation: Thermal Insulation

Data Source

PatentUS7968132B2Dual compartment sandwich containers having a hinged divider and removable hot/cold pack
Publication Date: 2011.06.28 CONTAIN THIS LLC
  • US7968132B2 patent drawing
  • US7968132B2 patent drawing
  • US7968132B2 patent drawing

AI summary

A durable, reusable dual compartment sandwich container having upper and lower compartments that are pivotally connected to one another and separated by a rotatable divider. One or more slices of bread or an elongated sandwich roll is carried within the upper compartment and the ingredients for a sandwich are carried in the lower compartment. The divider is rotated over top of the lower compartment so as to segregate the wet ingredients from the dry bread and thereby prevent the bread from becoming soggy. A removable hot/cold pack is also carried within the lower compartment to provide heat or cold to the sandwich ingredients over a prolonged period of time in order to avoid the premature spoilage of the ingredients prior to consumption. In one embodiment, each of the upper and lower compartments, the divider and the hot/cold pack is shaped to resemble a slice of bread, so that in the closed configuration, the overall appearance of the sandwich container is that of a sandwich, whereby to provide a visual indication of the intended use thereof.