Gravity-Locked Culinary Tongs for Grease-Resistant One-Hand Use
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Solution Overview
Problem
Conventional culinary tongs and clamps face difficulties in holding heavy objects due to strong biasing forces, require manual effort to maintain closed position, and are cumbersome to store when not in use, with actuation locks often malfunctioning in greasy or saucy conditions.
Innovation Solution
A locking mechanism using a movable member, such as a ball bearing, within an enclosed channel defined by the arms, allowing locking and unlocking through orientation changes, eliminating the need for an actuation switch and enabling one-hand operation, with the ball bearing sliding in response to gravity to lock or unlock the arms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If an actuation lock with a switch is introduced to lock the arms, then the arms can be locked to stay close together, but the grease or sauce can hinder working of the moving parts or switch
Solution Approach 1:
The invention removes the problematic actuation switch and moving parts from the locking mechanism. Instead, it uses a passive gravity-dependent locking system where a movable member with a locking surface engages with a fixed locking surface on the opposite arm, eliminating components that could be hindered by grease or sauce.
Solution Approach 2:
The locking mechanism operates automatically based on the orientation of the utensil and the force applied by the user. When the user closes the arms, the movable locking member is pushed against the fixed locking surface, and gravity maintains this locked position without requiring any additional actuation or switches.
2Ease of operation
If the arms are biased to spread apart when not in use, then the utensil opens automatically for next use, but the utensil becomes larger and difficult to stow
Solution Approach 1:
The locking mechanism transitions between two dynamic states based on orientation and user input: a locked state where gravity keeps the arms closed for compact storage, and an unlocked state where the biasing means allows the arms to open for use. This dynamic behavior allows the same mechanism to serve both storage and operational needs.
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
Enables effortless one-hand operation for locking and unlocking, prevents arms from spreading apart due to biasing forces, and maintains a secure grip on objects without manual effort, while being resistant to interference from grease or sauce, and allows for easier storage by maintaining a compact form.
Implementation Method 1
the movable member is slidable in response to gravity and orientation of the apparatus
Data Source
AI summary
Disclosed is a locking arrangement having a first wall defining a first surface and a second wall defining a second surface, with the first and second surfaces abutting each other; a mechanism for locking the first wall against the second wall; and a movable member. The first wall and the second wall are configured to define an enclosed channel for accommodating the movable member such that the movable member is slidable within the channel, and wherein the locking arrangement may assume one of two configurations, in that in one of the two configurations said walls are prevented from moving relative to each other by the movable member and in the other configuration said walls and hence the arms extended therefrom are movable relative to each other.