Stackable Cookware Lid and Knob with Interlocking Dimple Design
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Solution Overview
Problem
Stackable lid and knob combinations for cookware storage are difficult to stack stably and often lack protection for users' hands when handling hot lids.
Innovation Solution
The design includes stackable lids with complementary upper and lower stacking platforms, featuring a knob with a dimple and a protrusion that interlock to provide stability, allowing lids to be stacked in multiple orders and protecting the user's hand from the hot lid.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If traditional stackable lid and knob combinations are used, then storage space can be utilized, but the lids are difficult to stack stably and lack stability when stacked
Solution Approach 1:
The patent applies asymmetry by designing the knob with a dimple on one side and the lower stacking platform with a corresponding protrusion, creating an asymmetric interlocking mechanism. This asymmetric design ensures that lids can only be stacked in the correct orientation, providing stable stacking while being easy to operate. The asymmetric features prevent lids from being stacked incorrectly and ensure proper alignment.
Solution Approach 2:
The patent implements the nesting principle by having the protrusion from one lid nest into the dimple of the knob on the lid below it. This nested configuration creates a secure interlocking mechanism where each lid fits into the previous one, providing stable stacking. The nested design allows multiple lids to be stacked vertically in a compact arrangement, solving both stability and space utilization issues.
2Productivity
If stackable lid designs are used, then storage efficiency improves, but the knobs fail to protect users' hands from hot lids
Solution Approach 1:
The patent applies the intermediary principle by using the knob as a mediating element between the user's hand and the hot lid surface. The knob extends from the lid, allowing users to grip and handle the lid without their hands contacting the hot covering material. This intermediary structure enables safe handling while maintaining the stackable design for efficient storage.
3Adaptability or versatility
If lids are designed with stacking features, then storage organization improves, but the configuration becomes complex
Solution Approach 1:
The patent merges multiple functions into the knob and stacking platform structures. The knob serves both as a handling element for user grip and as part of the stacking mechanism through the dimple feature. The lower stacking platform combines the protrusion element with the structural base of the lid. This merging of functions reduces overall complexity while providing both handling and stacking capabilities.
Data Source
AI summary
A pot or pan lid is configured for stacking with identical or differently sized lids that have an identical handle or knob with a dimple on the upper surface. The side of the lid opposite the handle has a complimentary protrusion configured to stably engage the dimple. The edge of the knob may extend laterally to correspond with the lid curvature to also support a similar lid on the knob perimeter that is distal from the dimple. The engaged central dimple and more distal perimeter of the knob provide for stable stacking of a plurality of lids in a level arrangement that avoids one or more lids tipping over.