Stackable Cookware Handle with Interlocking Projection and Recess
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Solution Overview
Problem
Existing cookware storage methods are cumbersome and unstable, particularly when stacking vessels of varying dimensions, as they often lead to tilting and instability, and require removable handles that can be lost or damaged.
Innovation Solution
A stackable cookware system with longitudinally extending handles featuring a proximal flange and a distal grip portion with a high aspect ratio, including a hole and a projection that allows for contactless nesting and stable stacking, preventing cosmetic damage and ensuring self-stabilization of stacked items.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If cookware vessels are stacked for storage, then space efficiency is improved, but stability deteriorates as the stack progressively tilts
Solution Approach 1:
The handle is divided into distinct functional segments: a proximal flange for vessel attachment, a grip portion with specific aspect ratio for stacking engagement, and integrated male/female fittings (projections and recesses) for inter-vessel connection. This segmentation allows each part to perform its specific function while contributing to overall stack stability.
Solution Approach 2:
The invention implements nested stacking where smaller vessels are placed inside larger ones, with handles interlocked through male-female fittings. The grip portion of one handle nests within the grip portion of another, creating a compact nested arrangement that maintains stability through the interlocking mechanism.
2Ease of operation
If removable handles are used to facilitate stacking, then ease of operation is improved, but reliability deteriorates due to loss or damage
Solution Approach 1:
The stacking function is merged with the handle structure itself. The male and female fittings are integrated into the handle body, eliminating the need for separate removable stacking components. This combination ensures that the stacking mechanism cannot be lost or damaged independently from the handle.
Solution Approach 2:
The handle's own structure provides the stacking mechanism through its integrated male and female fittings. The handle serves dual purposes: as a gripping tool and as a self-contained stacking interface, requiring no additional components or accessories.
3Adaptability or versatility
If cookware articles of varying dimensions are stacked, then adaptability is improved, but manufacturing precision deteriorates due to cosmetic defects
Solution Approach 1:
The handle acts as an intermediary element between vessels of varying dimensions. The male-female fitting mechanism provides a standardized interface that accommodates different vessel sizes while preventing direct contact between vessel surfaces, thereby protecting cosmetic finishes regardless of dimensional variations.
4Ease of operation
If the grip portion has a high aspect ratio, then ease of operation is improved, but device complexity increases
Solution Approach 1:
The handle exhibits local quality variations: the grip portion has a high aspect ratio (at least 4:1) optimized for hand comfort, while the proximal flange has a specific geometry for secure vessel attachment. Each region is optimized for its specific function without unnecessarily complicating other areas.
Data Source
Figure 1A~1E
Figure 2A~2B
Figure 3A~3B
AI summary
A stackable cookware article system (20) may include a stackable handle (200) having a grip portion ( 220) including a projection (230) and a hole (225) configured for stacking with similarly configured handles. The hole (225) may be adapted to receive in at least an upper inner surrounding portion a complimentary downward extending projection that extends from a substantially similar grip portion. When stacked, cookware articles (20), such as a series of vessels(100, 100', 100'') having progressively decreasing diameters, deploying the handle (200) may stably stack in nested arrangements external portions of an inner nested vessel contacting the internal portion of an outer surrounding vessel in which it nests.