One-Piece Spring-Loaded Cookware Handle for Secure Rim Attachment
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Solution Overview
Problem
Existing removable cookware handles are prone to wear, heat damage, and failure due to complex mechanical systems and materials like plastics, posing safety risks when handling heavy, hot pans.
Innovation Solution
A one-piece metal handle with diverging prongs and a spring-loaded pin locking mechanism that securely attaches to the cookware rim, providing a simple, durable, and safe attachment solution without the need for separate parts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If complex mechanical systems with springs, pivots, and ratchets are used in removable handles, then the handle can achieve removable functionality, but the system becomes prone to wear, heat damage, and failure
Solution Approach 1:
The patent combines the handle body, locking mechanism, and release mechanism into a single integrated one-piece construction. This eliminates separate springs, pivots, and ratchets that were prone to wear and failure, while maintaining the removable functionality through a simplified cam-based locking system that is part of the unified structure.
Solution Approach 2:
The patent replaces complex mechanical systems (springs, pivots, ratchets) with a simpler cam-based locking mechanism. The cam geometry provides the locking action through its shape rather than through separate mechanical components, reducing the number of moving parts and potential failure points while maintaining removable functionality.
2Device complexity
If plastics are used in removable handle components, then the handle can be manufactured with complex mechanisms, but the plastic is susceptible to heat damage and cracking
Solution Approach 1:
The patent employs a composite construction where a metal handle body provides heat resistance and structural strength, while plastic components are minimized to only essential elements like the release button. This composite approach allows the retention of manufactured complexity where needed while protecting against heat damage by using heat-resistant materials in the primary load-bearing and heat-exposed areas.
Solution Approach 2:
The patent accepts that minor plastic components like the release button may be heat-sensitive, but designs them as replaceable elements. The critical heat-resistant functions are handled by the metal body, allowing the plastic elements to be simpler and potentially replaceable if damaged, while the overall handle system maintains durability through its metal construction.
3Adaptability or versatility
If friction-based lockable jaws are used to clamp to pot walls, then universal attachment is achieved, but sudden failure can lead to serious accidents
Solution Approach 1:
The patent replaces friction-based clamping with a positive cam-based locking mechanism. The cam geometry provides a mechanical interlock that engages with the pot rim, replacing the unreliable friction-based jaw system. This positive locking mechanism prevents sudden failure by creating a geometric constraint rather than relying on friction forces that can degrade over time.
Solution Approach 2:
The patent divides the attachment function into distinct elements: the cam-based locking mechanism provides secure engagement, while separate prongs provide positioning and support. This segmentation allows each element to perform its specific function optimally, with the locking mechanism providing reliable attachment and the prongs providing universal adaptability through their positioning on the pot rim.
4Ease of operation
If separate parts are used for locking pins with buttons and springs, then the locking mechanism can function, but moving parts are subject to wear over the long term
Solution Approach 1:
The patent merges the locking pin, button, and spring mechanisms into a unified one-piece construction where these elements are integral to the handle body rather than separate movable parts. This eliminates the wear that occurs at interfaces between separate components, while maintaining the locking function through the integrated cam geometry and release mechanism built into the single piece.
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
The solution ensures a secure and reliable attachment of cookware, preventing accidental detachment and potential accidents by maintaining engagement even when the pan is tilted or rotated, while being durable enough to withstand heat and heavy loads.
Implementation Method 1
a spring-loaded pin adapted to be received in an opening in the cookware rim
Implementation Method 2
The pin has an inclined surface which facilitates the insertion of the pin into the opening in the cookware rim
Data Source
AI summary
The handle includes first and second spaced sets of prongs. Each of the prong sets has a first prong and a second prong spaced from the first prong a distance sufficient to receive the cookware rim therebetween. The prongs in each of the prong sets diverge as the prongs progress away from the cookware body. A locking mechanism is situated between the prong sets for engaging the cookware rim to removably secure the handle to the cookware. The locking mechanism includes a spring-loaded pin adapted to be received in an opening in the cookware rim. The pin is situated on the unattached end of a leaf spring prong extending from the body of the handle. The pin has an inclined surface which facilitates the insertion of the pin into the opening in the cookware rim to lock the handle to the cookware. The handle is formed of a single piece of material and may be sold in combination with the cookware or separately.