Adjustable Ring with Radial Plates and Crimped Spring

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Solution Overview

Problem

Conventional jewelry rings require frequent resizing to accommodate varying finger sizes, which is time-consuming and costly, especially for rings with precious stones, as they often need to be modified in multiple sizes, leading to significant capital immobilization and complexity.

Innovation Solution

A jewelry ring design featuring adjustable plates with a spring device that can be removably mounted using crimping means, allowing the internal diameter to be adjusted radially, enabling the ring to accommodate different finger sizes without compromising the mechanical properties of the spring device.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If conventional resizing operations are performed on jewelry rings, then the ring can be adapted to different finger sizes, but it involves loss of time and expense

Engineering Contradiction:

Improvering size adaptabilityVSAvoidresizing time

Core Design Contradiction:

Adaptability or versatilityVSLoss of time

Solution Approach 1:

The ring incorporates movable adjustment plates that can be dynamically repositioned along the ring body to change the internal diameter. The spring device enables the plates to move freely between housing positions, allowing quick size adjustment without permanent modification or time-consuming resizing operations.

Inventive Principle:

Principle #15Dynamics

2Adaptability or versatility

If conventional resizing operations are performed on jewelry rings, then the ring can be adapted to different finger sizes, but it involves expense and capital immobilization

Engineering Contradiction:

Improvering size adaptabilityVSAvoidcapital immobilization

Core Design Contradiction:

Adaptability or versatilityVSQuantity of substance

Solution Approach 1:

A single ring design with adjustable plates can serve multiple size requirements, replacing the need for merchants to maintain multiple sizes of the same ring model. The adjustment plates enable one ring to fit various finger sizes, reducing inventory requirements and capital tied up in stock.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Adaptability or versatility

If the spring device is mounted on the adjustment plate, then the ring can accommodate different finger sizes, but the mechanical properties of the spring device may change

Engineering Contradiction:

Improvering size adjustmentVSAvoidspring elastic properties

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The spring device is extracted as a separate, removable component that can be mounted onto or removed from the adjustment plate as needed. The crimping means provide secure attachment without permanently altering the spring's mechanical properties, allowing the spring to be replaced or serviced while maintaining its elastic characteristics.

Inventive Principle:

Principle #2Taking out (Extraction)

4Stability of the object's composition

If the spring device is permanently fixed to the adjustment plate, then the structure is more stable, but the spring loses its elastic properties

Engineering Contradiction:

Improvestructural stabilityVSAvoidspring elasticity

Core Design Contradiction:

Stability of the object's compositionVSStrength

Solution Approach 1:

The crimping means act as an intermediary connection between the spring device and adjustment plate, providing secure attachment through removable crimping rather than permanent welding or bonding. This intermediary connection maintains structural stability during use while allowing the spring to retain its elastic properties and be replaced if needed.

Inventive Principle:

Principle #24Intermediary (Mediator)

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

This design allows for reliable and efficient size adjustment, reducing the need for multiple ring sizes and minimizing capital requirements, as it can accommodate a range of diameters with minimal additional inventory, while maintaining the spring's elastic properties and ensuring secure contact with the adjustment plate.

Implementation Method 1

a spring device configured to exert an elastic force on the adjustment plate so that the latter can be moved along an axis substantially radial with respect to the ring body

Methodology Applied

Scientific EffectElastic force: Elasticity

Data Source

PatentEP3787432B1Adjustable jewellery ring comprising adjustment plates

Publication Date: 2023.07.05 CARTIER INTERNATIONAL AG

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AI summary

The invention relates to a jewellery ring (1) designed to be able to fit on fingers of different sizes, comprising: a ring body (10) having a substantially annular opening (16) for receiving the finger, the ring body (10) comprising at least one housing (12) communicating with the opening (16); at least one adjustment plate (21) which is movably mounted in the housing (12) and extends over an angular segment along the ring body (10); and a spring device (20) designed to exert an elastic force on the adjustment plate (21) in such a way that said plate can be moved along an axis (11) which is substantially radial in relation to the ring body (10), the ring (1) being configurable between a first configuration in which an inner diameter of the opening (16) of the ring (1) is maximal and substantially equal to the diameter of the inner face (17) of the ring body (10) and at least one second configuration in which the inner diameter of the opening (16) is reduced and at least partially defined by the adjustment plate (21) projecting from the inner face (17) of the ring body (10); the spring device (20) being detachably mounted on the adjustment plate (21) by crimping means (24).