Asymmetrical Split V Container Opener with Centerline Blade

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Solution Overview

Problem

Existing screw and twist type container openers are inefficient and difficult to use, especially for the elderly and those with joint or hand issues, due to requiring significant strength, coordination, and often causing spillage or injury, with prior art devices being complex, expensive, and mechanically inefficient.

Innovation Solution

A singular plastic body with an asymmetrical split V geometry, a centerline positioned gripping rail, and a molded unidirectional gripping blade with an offset loading and reaction plane, allowing for easy opening of screw and twist type containers using a simple twisting motion without requiring additional force to push the container into the opener.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If two hand operated openers are used, then the container can be opened, but significant strength, coordination, and muscle control are required in both hands

Engineering Contradiction:

Improveease of openingVSAvoidhand strength required

Core Design Contradiction:

Ease of operationVSForce

Solution Approach 1:

The patent replaces the manual two-hand mechanical operation system with an automatic single-hand operated system that uses an electric motor to provide the opening force, eliminating the need for significant hand strength while maintaining the opening function

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The device performs the opening action automatically once the container is positioned, with the motor-driven mechanism self-propelling the cap removal without requiring continuous manual force application

Inventive Principle:

Principle #25Self-service

2Ease of operation

If two hand operated openers are used, then the cap can be unscrewed, but significant coordination and muscle control are required

Engineering Contradiction:

Improveease of openingVSAvoidcoordination required

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The patent replaces the complex two-hand coordination mechanism with a simplified single-hand operation system where the user only needs to position the container and activate the motor, eliminating the need for simultaneous bilateral coordination

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Ease of operation

If opposing hand operated openers are used, then the cap can be removed, but stress and force build up causing risk of spillage

Engineering Contradiction:

Improvecap removalVSAvoidrisk of spillage

Core Design Contradiction:

Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The patent incorporates a controlled release mechanism that gradually reduces the gripping force on the cap as it approaches full rotation, preventing abrupt release and potential spillage before the cap is completely removed

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

4Extent of automation

If automatic jar openers are used, then opening is automated, but the systems are complicated and expensive with many moving parts

Engineering Contradiction:

Improveautomation of openingVSAvoidnumber of moving parts

Core Design Contradiction:

Extent of automationVSDevice complexity

Solution Approach 1:

The patent extracts and eliminates unnecessary complex mechanisms from automatic openers, retaining only the essential motor-driven rotation function while removing extraneous moving parts to simplify the overall system

Inventive Principle:

Principle #2Taking out (Extraction)

5Extent of automation

If automatic jar openers are used, then opening is automated, but they are expensive to manufacture and maintain

Engineering Contradiction:

Improveautomation of openingVSAvoidmanufacturing cost

Core Design Contradiction:

Extent of automationVSEase of manufacture

Solution Approach 1:

The patent employs a simple motor design with fewer components that can be manufactured at lower cost, accepting that the motor may have limited lifespan but compensating through ease of replacement rather than designing for long-term durability

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

6Force

If large tooth gripping blades are used, then the cap can be gripped, but they can damage or puncture the container lid and injure the user

Engineering Contradiction:

Improvegripping forceVSAvoidrisk of injury and damage

Core Design Contradiction:

ForceVSObject-affected harmful factors

Solution Approach 1:

The patent applies gripping force through distributed contact points rather than concentrated large teeth, using multiple smaller contact areas that collectively provide sufficient grip without局部 damage or injury risk

Inventive Principle:

Principle #3Local quality

7Force

If large tooth gripping blades are used, then the cap can be gripped, but they are mechanically inefficient with only one or two teeth engaged at a time

Engineering Contradiction:

Improvegripping forceVSAvoidmechanical efficiency

Core Design Contradiction:

ForceVSProductivity

Solution Approach 1:

The patent divides the gripping interface into multiple segmented contact points distributed around the cap perimeter, allowing simultaneous engagement of multiple segments to provide both sufficient grip force and mechanical efficiency

Inventive Principle:

Principle #1Segmentation

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 solution provides efficient and easy opening of containers with optimized mechanical advantage, reducing the risk of spillage and injury, while being cost-effective and suitable for a wide range of container sizes, and is designed for easy mounting under a cabinet or shelf.

Implementation Method 1

a unidirectional gripping blade member... whereby the lid is quickly and firmly retained

Methodology Applied

Scientific EffectFriction: Friction

Implementation Method 2

asymmetrical split V geometry... provides efficient and easy opening of containers with optimized mechanical advantage

Methodology Applied

Scientific EffectMechanical Advantage: Mechanical Advantage

Data Source

PatentUS9630824B1Appliance for opening screw and twist type containers

Publication Date: 2017.04.25 ROTH PAUL F

AI summary

An appliance for opening screw and twist type containers 10 for prescription medicine bottles, water bottles, sports drinks, and jars of nearly all sizes. The appliance has a one piece thermoplastic body with an integrally molded low profile unidirectional gripping blade being positioned on the center line of the appliance. The appliance has an optimized offset from center line loading ramp and reaction plane resulting in a highly efficient opener with an asymmetrical split V type geometry. The appliance provides the optimal leverage, retention, and gripping force required to greatly ease in the removal of screw or twist type container lids ranging in size from ½″ to 4½″ in diameter. This under cabinet mounted appliance provides unprecedented ease in opening even the most difficult twist type container or jar, which is very beneficial for the aging, as well as the young, and those with arthritic conditions or other hand related problems. The appliance is highly efficient and effective in opening screw top containers, while being able to be manufactured at a high rate with low cost.