Pinch Grip Coffee Container Ergonomic Design
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Solution Overview
Problem
Cylindrical plastic coffee containers with pinch handles are difficult to handle due to the required friction and muscle strain, limiting the weight that can be held and causing discomfort due to the distance from the container's center of gravity to the user's wrist.
Innovation Solution
The design includes pinch pockets with a reduced lateral opening separation and depth, along with thumb receiving cavities, to create a more ergonomic grip that reduces finger muscle strain and improves handling by allowing a more natural finger and thumb engagement, thereby minimizing the distance from the wrist to the container's center of gravity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If pinch handles are made deeper into the container wall, then ease of grasping is improved, but device complexity and manufacturing difficulty increase
Solution Approach 1:
The patent optimizes specific dimensional parameters of the pinch pockets, including depth (0.5-1.5 inches), lateral separation (2.0-3.0 inches), and vertical positioning (3-6 inches from top), to achieve optimal grasping comfort while maintaining manufacturing feasibility. These parameter adjustments resolve the contradiction by finding the sweet spot between ergonomic performance and structural simplicity.
2Ease of operation
If lateral opening separation of pinch pockets is reduced, then ease of grasping is improved, but manufacturing precision requirements increase
Solution Approach 1:
The patent specifies an optimal lateral opening separation range of 2.0-3.0 inches, which is narrow enough to provide comfortable finger engagement but wide enough to accommodate normal manufacturing tolerances. This parameter optimization resolves the contradiction between ergonomic performance and manufacturing feasibility.
3Ease of operation
If pinch pockets extend deeper into the container, then finger engagement is improved, but container wall strength is reduced
Solution Approach 1:
The patent limits pinch pocket depth to 0.5-1.5 inches and positions them 3-6 inches from the top, creating optimal finger engagement zones that do not compromise the overall structural integrity of the container walls. This parameter optimization resolves the contradiction between ergonomic performance and structural strength.
Solution Approach 2:
The pinch pockets are strategically positioned in the upper portion of the container (3-6 inches from top) where local wall thickness and structural requirements are different from the base area. This localized design allows deeper engagement where needed while preserving overall container strength.
4Quantity of substance
If container size is increased to store more coffee, then storage capacity is improved, but ease of handling deteriorates
Solution Approach 1:
The patent uses uniform pinch pocket design on opposite sides of the container, providing balanced grip points that distribute handling effort evenly. This homogeneous design allows larger containers to be handled with the same ease as smaller ones by providing consistent ergonomic reference points.
Solution Approach 2:
The container is effectively segmented into manageable grip zones through the pinch pockets, allowing users to control and maneuver larger containers by applying force at specific localized points rather than attempting to grip the entire circumference.
Data Source
AI summary
A plastic container for a particulate product includes a base and a surrounding wall member upstanding therefrom which generally define a container main interior volume. A top connects to the surrounding wall member and includes a large opening sufficient to receive about a 5 inch cylinder therethrough. The surrounding wall member includes a pair of pinch pockets having a lateral opening separation W which is not greater than about 2.5 inches and/or a lateral minimum separation C of not greater than about 2.0. In some embodiment, a thumb receiving cavity is provided above the pinch pockets. The pinch pockets are configured and sized for easy grasping and holding of the container.