Encapsulated Locking Tongs for Jam-Resistant Closed Storage
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Solution Overview
Problem
Existing kitchen tongs are inconvenient for handling both large and small food items, and their locking mechanisms are often cumbersome, easily jammed, or accidentally unlocked during washing and storage.
Innovation Solution
A pair of tongs with pivotally connected arms, a biasing member to maintain an open position, a sliding locking plate, and a handle that encapsulates the locking mechanism for ease of use and protection, allowing the tongs to handle both large and small items and securely lock in a closed position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a locking mechanism is added to allow tongs to be stored in a closed position, then the tongs can be conveniently stored, but the locking mechanism becomes cumbersome and easily jammed
Solution Approach 1:
The locking plate is nested within the handle structure, with the handle serving as both a grip and a protective enclosure for the locking mechanism. The pivot pin passes through a slot in the locking plate, which is itself positioned within the handle's internal cavity, creating a compact integrated design that reduces overall complexity while maintaining locking functionality.
Solution Approach 2:
The handle is designed to encapsulate the locking plate, merging the gripping function with the locking mechanism protection. The biasing member is integrated into the same structural assembly, combining multiple functions (gripping, locking, and spring biasing) into a unified structure that reduces the number of separate components.
2Reliability
If a locking mechanism is added to secure tongs in closed position, then the tongs can be stored securely, but the locking mechanism is too easily accidentally unlocked during washing and storage
Solution Approach 1:
The biasing member (spring) is pre-positioned to continuously exert force on the locking plate, maintaining it in the locked position. This prior cushioning force ensures that the locking mechanism remains secure during washing and storage, preventing accidental unlocking without requiring additional complex safety features.
Solution Approach 2:
The handle encapsulates the locking plate, providing a protective enclosure that shields the locking mechanism from external forces during washing and storage. This encapsulation acts as a flexible barrier that prevents unintended actuation while allowing the locking plate to move smoothly within the handle's internal cavity.
3Ease of operation
If the tongs are designed with a locking mechanism, then the tongs can be stored in closed position, but the locking mechanism requires frequent maintenance and cleaning
Solution Approach 1:
The locking plate is nested within the handle's internal cavity, creating a protected environment that shields the locking mechanism from food particles and water during washing. This nested configuration reduces maintenance frequency by preventing contamination of the locking surfaces while still allowing the plate to slide smoothly for locking and unlocking operations.
4Reliability
If the tongs handle encapsulates the locking mechanism, then the locking mechanism is protected, but the handle structure becomes more complex
Solution Approach 1:
The handle is designed to serve dual functions: as a gripping surface for the user and as a protective enclosure for the locking mechanism. By merging these two functions into a single integrated structure, the handle provides protection without requiring an additional separate housing or case, thereby minimizing structural complexity while achieving the desired protection.
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 tongs provide ease of use and protection for the locking mechanism, enabling efficient handling of various food items while maintaining a secure closed position, reducing the need for multiple tongs and minimizing the risk of accidental unlocking.
Implementation Method 1
A biasing member is positioned to engage and bias the first and second arms to the open position
Implementation Method 2
the body engages the pivot ends of the first and second arms when in the first position to lock the arms in a close position
Data Source
AI summary
A pair of locking kitchen tongs for use in handling food items and the like is disclosed. The tongs have a pair of rigid steel arms each having a workpiece engaging or grasping end, a body portion and a pivot end from which the arms are pivotally connected together. The grasping ends are preferably scalloped along one edge, for handling relatively large items, and serrated (i.e., fine-toothed) along another edge, for handling of smaller or fine items. A bulbous, tear-shaped body made from a rigid, non-metal material encapsulates the pivot ends of the two arms as they are pivotally connected together to permit movement between an open position and a closed position. Also within and coupled to the encapsulating body is a sliding locking plate. The locking plate has a body defining a slot which allows the locking plate to slide between a locked position, maintaining the arms in their closed position, and an unlocked position, allowing them free pivoting movement.