Pivot-Arm Safety Cap Removal Tool for Adult Accessibility
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Child-resistant safety packaging can be difficult for adults with limited tactile abilities or disabilities to open, while still being accessible to children, compromising safety and usability.
Innovation Solution
A safety cap removal tool that separates the outermost cap from the innermost cap of a child-resistant safety cap, allowing easy opening by twisting only the innermost cap, using a baseplate, pivot arm, and nest block to clamp and rotate the outermost cap off the bottle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If child-resistant safety packaging is designed to prevent children from accessing contents, then child safety is improved, but accessibility for adults with physical disabilities deteriorates
Solution Approach 1:
The cap is divided into two separate pieces: an innermost cap that remains on the bottle and an outermost cap that is removed. The removal tool further segments the outermost cap by using a pivot arm with a lip that engages only the outermost cap's ledge, separating it from the innermost cap. This segmentation allows the child-resistant feature (outermost cap) to be removed while leaving the functional cap (innermost cap) intact, resolving the contradiction between child safety and adult accessibility.
Solution Approach 2:
The safety cap removal tool acts as an intermediary device between the child-resistant packaging and the adult user. The tool's pivot arm with lip engages the outermost cap, and the nest block supports the bottle, mediating the force application to separate the caps. This intermediary tool enables adults with limited tactile abilities to overcome the child-resistant mechanism without compromising the safety design for children.
2Reliability
If a two-piece cap design is used with outermost and innermost caps, then child-resistant functionality is achieved, but device complexity increases
Solution Approach 1:
The cap system is segmented into two functional components: the outermost cap providing child-resistant protection and the innermost cap providing the sealing function. This segmentation allows each component to be optimized for its specific purpose, achieving child-resistant functionality while maintaining relative simplicity in the overall design.
Solution Approach 2:
The innermost cap is nested within the outermost cap structure. The innermost cap fits inside the outermost cap's internal diameter, with the outermost cap's ledge providing the engagement surface. This nesting arrangement achieves the child-resistant functionality with minimal additional complexity, as the two caps work together in a compact configuration.
3Reliability
If downward pressure is applied to engage protrusions and receiving features in the two-piece cap, then torque transmission is enabled, but force requirements increase making it difficult for adults with disabilities
Solution Approach 1:
The removal tool serves as an intermediary that applies the necessary downward force to separate the caps. The pivot arm acts as a lever, with the user applying force at the handle end and the lip engaging the outermost cap's ledge. This mechanical advantage allows the tool to generate sufficient separating force without requiring the user to directly apply high downward pressure, thus enabling torque transmission reliability while reducing the force requirement for the user.
Solution Approach 2:
Instead of applying downward pressure vertically to engage the protrusions and receiving features, the removal tool applies separating force in a different dimension - horizontally or at an angle - by using the pivot arm's rotational movement. The lip engages the outermost cap's ledge and the pivot arm rotates to lever the cap off, changing the direction of force application from vertical compression to horizontal separation, thereby reducing the downward pressure requirement.
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
Enables easy and pain-free opening of child-resistant containers by adults with disabilities, converting them into single-piece screw-on caps, enhancing accessibility without compromising child safety.
Implementation Method 1
a pivot arm comprising an arm length, the arm length extending from a pivot end of the pivot arm to a handle end of the pivot arm, the pivot arm pivotally engaged with the pin at the pivot end of the pivot arm
Implementation Method 2
a pivot arm comprising an arm length, the arm length extending from a pivot end of the pivot arm to a handle end of the pivot arm
Implementation Method 3
a lip extending from a surface of the pivot arm into the receiving space
Data Source
AI summary
A safety cap removal tool including an ergonomic and user-friendly arrangement that allows for the removal of an outermost cap of a child-resistant safety cap bottle with reduced effort. The safety cap removal tool includes a baseplate, a nest block attached to the baseplate, and a pivot arm pivotally attached to the baseplate. The tool includes a receiving area disposed between a clamping surface of the pivot arm and the nest block. When the child-resistant safety cap bottle is placed cap-side down against the baseplate the pivot arm is then moved into contact with the child-resistant safety cap where a lip of the pivot arm engages with an edge of the outermost cap. In this position, the bottle is then moved in a direction away from the lip, pivoting at an area adjacent the nest block, separating the outermost cap from the remaining portion of the child-resistant safety cap.