Gravity-Locked Culinary Tongs for Grease-Resistant Storage

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Solution Overview

Problem

Conventional tong- or clamp-like utensils face difficulties in holding heavy or slippery objects due to strong biasing forces, and they become cumbersome when not in use due to the need for external locking mechanisms that can be unreliable and aesthetically unpleasing, especially when used with greasy or saucy foods.

Innovation Solution

A locking mechanism featuring a pivotable lever and guide that utilizes gravity to lock or unlock the arms of the utensil, allowing the arms to be easily locked or unlocked by adjusting the orientation of the utensil, minimizing the need for external controls and preventing interference from food substances.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional locking mechanisms are introduced to lock the arms together, then the arms can be held firmly, but the working of the switch can be adversely interfered with by grease or sauce on food objects

Engineering Contradiction:

Improvereliability of locking mechanismVSAvoidinterference from grease or sauce

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The locking mechanism is extracted and enclosed within the handle structure, separating it from the food-contact areas. The ball bearing and channel are housed inside the handle, protecting them from exposure to grease and sauce that would interfere with their operation.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The handle structure acts as a protective enclosure for the locking mechanism components. This housing isolates the ball bearing and channel from the external environment, preventing contamination by food substances.

Inventive Principle:

Principle #30Flexible shells and thin films

2Adaptability or versatility

If the arms are biased to spread apart when not in use, then the utensil is ready for picking up objects, but the utensil becomes larger and difficult to stow

Engineering Contradiction:

Improvereadiness for useVSAvoidstorage space required

Core Design Contradiction:

Adaptability or versatilityVSVolume of moving object

Solution Approach 1:

The patent introduces a dynamic locking system that allows the arms to be held in either open or closed position as needed. The ball bearing can move along the channel to engage or disengage from the cam surface, enabling the arms to maintain their position dynamically rather than being fixed in one configuration.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The locking mechanism is integrated into the handle structure itself, combining the handling function with the locking function. This merging eliminates the need for separate external locking devices and allows compact storage when the arms are locked together.

Inventive Principle:

Principle #5Merging (Combining)

3Reliability

If an actuation lock with a switch is provided to lock the arms, then the arms can be locked to stay close together, but maneuvering food with such utensil and controlling locking or unlocking of the arms simultaneously can be difficult

Engineering Contradiction:

Improvelocking capabilityVSAvoidease of simultaneous maneuvering and locking control

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The locking mechanism automatically engages or disengages based on the natural movement of the arms during use. When the arms are squeezed together, the cam surface automatically pushes the ball bearing into the locked position, eliminating the need for separate manual control.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The geometry of the cam surface is designed to automatically push the ball bearing into the locked position before the arms fully close, ensuring the lock is engaged in advance. This preliminary locking action occurs automatically as part of the closing motion, without requiring separate control.

Inventive Principle:

Principle #10Preliminary action

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 mechanism effectively holds objects securely without requiring manual force against biasing forces, simplifies storage by maintaining a compact form, and operates reliably even when used with greasy or saucy foods by using gravity-activated locking and unlocking.

Implementation Method 1

a lever pivotably connected to the apparatus and adapted to take a swinging course between a first position and a second position... due to orientation of the apparatus and the effect of gravity on the lever

Methodology Applied

Scientific EffectGravity: Gravitation

Data Source

PatentUS8562045B2Locking arrangement and culinary utensil comprising same

Publication Date: 2013.10.22 MAXPAT TRADING & MARKETING (FAR EAST) LTD

AI summary

The present invention is concerned with a locking arrangement having a first member and a second member, each having a front end and a rear end and with the first member and the second member connected together at a first pivot axis, a front portion, a rear portion and a locking mechanism. The locking mechanism includes a lever and a guide. The arrangement is configured to assume one of two configurations in that in a first configuration the lever is engaged in a first position due to orientation of the arrangement such that the first arm and the second arm are locked against each other, or in a second configuration in which the lever having been disengaged from the first position, or engaging or engaged in the second position, due to orientation of the apparatus such that the first arm and the second arm are movable relative to each other.