Stackable Cookware Stop Design for Stable Nesting Configuration
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Solution Overview
Problem
Cookware items, such as pots and pans, often fail to stack and nest stably due to attached handles and lack of design features that prevent rocking or shifting, making them unstable when moved or expanded.
Innovation Solution
The design incorporates cookware items with varying diameters or tapering walls that nest together, and includes stops on the outer surface with specific contact points to stabilize the stack, ensuring that the upper items are supported without rocking by contacting the rim of the lower items at exactly three or four co-planar points.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If handles are attached to cookware items for ease of operation, then ease of operation is improved, but the ability to stack and nest stably deteriorates due to interference with stacking configuration
Solution Approach 1:
The handle is extracted from the main body of the cookware item and attached separately to the exterior surface, allowing the stacking surfaces to remain clear and stable while maintaining ease of operation through the attached handle
2Ease of manufacture
If simple and rugged design is used to reduce cost, then ease of manufacture and cost are improved, but the ability to achieve stable stacking configuration deteriorates without complex stabilization features
Solution Approach 1:
The stacking surfaces are designed with specific local qualities including co-planar contact points and complementary geometries that provide stable nesting, while the rest of the cookware maintains a simple and rugged design for ease of manufacture
3Adaptability or versatility
If cookware items are designed with varying diameters or tapering walls for nesting, then nesting capability is improved, but manufacturing precision requirements worsen to achieve proper fit and stability
Solution Approach 1:
The cookware items are designed with asymmetric tapering walls and varying diameters that enable nesting, with the asymmetry carefully controlled to provide stable configuration while maintaining reasonable manufacturing precision requirements
Data Source
AI summary
A set of nestable and stackable cookware, for example, a set of pots and pans, is maintained in a stable configuration by stops attached to the outer walls of the cookware. Each stacked and nested item of cookware is supported on the rim of the lower item by two stops attached to its outer wall, on opposite sides of the item. Each stop is shaped and configured to contact the rim of the lower item in the stack at a finite number of points. A first stop contacts the lower rim at two points, and a second stop contacts the rim at one or two points. The points of contact lie in the same plane, which uprightly supports the stacked cookware item on the lower cookware item, without the walls or the base of the stacked cookware item touching the lower item.