Watch Flange Channel with Drive Flyweights

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Solution Overview

Problem

Existing timepieces and jewelry with mobile decorative elements face challenges of increased dimensions and high manufacturing costs due to complex designs and bulky structures, which compromise mobility and visual appeal.

Innovation Solution

Incorporating two groups of mobile elements with different inertia, where heavier elements act as drive weights to overcome friction and enhance the mobility of lighter elements, allowing for improved movement and visual effect without altering the size or increasing the cost of the timepiece.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If mobile decorative elements are added to timepieces, then visual appeal and mobility are improved, but friction forces prevent sufficient movement of lightweight elements

Engineering Contradiction:
Improvemobility of decorative elementsVSAvoidfriction forces
Core Design Contradiction:
Ease of operationVSForce

Solution Approach 1:

The patent introduces drive flyweights (heavier mobile elements) that act as counterweights to overcome friction forces. These flyweights have higher inertia and drive the lighter decorative elements, compensating for the insufficient weight of the decorative elements alone to overcome friction within the housing.

Inventive Principle:
Principle #8Anti-weight (Counterweight)

Solution Approach 2:

The patent changes the mass parameter of mobile elements by introducing elements with different weights. The system includes both lightweight decorative elements and heavier drive flyweights, creating a mass differential that enables the lighter elements to move freely by being driven by the heavier elements.

Inventive Principle:
Principle #35Parameter changes

2Ease of operation

If complex designs with additional channels and cabochons are used, then mobility of decorative elements is improved, but manufacturing cost increases

Engineering Contradiction:
Improvemobility of decorative elementsVSAvoidmanufacturing cost
Core Design Contradiction:
Ease of operationVSEase of manufacture

Solution Approach 1:

The patent merges the function of additional channels and cabochons into the existing flange structure. The flange is modified to include a channel directly, eliminating the need for separate cabochon housings and additional channels, thereby reducing manufacturing complexity and cost while maintaining mobility.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The flange is designed to serve multiple functions: it provides structural support, contains the channel for mobile elements, and integrates the drive mechanism. This multi-functionality eliminates the need for separate components like dedicated cabochon housings, simplifying manufacturing.

Inventive Principle:
Principle #6Universality (Multi-functionality)

3Ease of operation

If additional channels and structural modifications are made, then mobility is improved, but device complexity increases

Engineering Contradiction:
Improvemobility of decorative elementsVSAvoidstructural complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The patent combines the channel structure with the flange, integrating what would traditionally be separate components. The flange itself forms the channel containing the mobile elements, eliminating the need for additional structural elements and reducing overall device complexity.

Inventive Principle:
Principle #5Merging (Combining)

4Ease of operation

If mobile elements are housed in separate cabochons, then mobility is improved, but the dimensions perpendicular to the crystal increase

Engineering Contradiction:
Improvemobility of decorative elementsVSAvoidthickness perpendicular to crystal
Core Design Contradiction:
Ease of operationVSLength of stationary object

Solution Approach 1:

The patent integrates the channel housing into the flange structure, eliminating the need for separate cabochon housings. This integration reduces the overall thickness perpendicular to the crystal while maintaining the mobility of decorative elements within the flange's channel.

Inventive Principle:
Principle #5Merging (Combining)

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

Ensures sufficient mobility of lightest elements, increasing their movement scope and visual appeal, while maintaining a compact design and moderate manufacturing costs, thus addressing the limitations of existing solutions.

Implementation Method 1

mobile elements, such as stones or intercalated decorations, circulating in a channel under the action of their weight

Methodology Applied
Scientific EffectGravitation: Gravitation

Implementation Method 2

at least two groups of said mobile elements, of different inertia between them

Methodology Applied
Scientific EffectInertia: Inertia

Implementation Method 3

the effect of the low weight of these mobile elements does not always make it possible to oppose the resisting forces of friction within their housing

Methodology Applied
Scientific EffectFriction: Friction

Data Source

PatentEP2397923B1Timepiece or jewellery item including moving elements
Publication Date: 2018.02.28 ETA SA MFG HORLOGERE SUISSE
  • EP2397923B1 patent drawingFigure 1
  • EP2397923B1 patent drawingFigure 2~3
  • EP2397923B1 patent drawingFigure 4~6

AI summary

The jewelry or timepiece has movable elements e.g. gobo, jeweler stone or imitation decoration elements, circulated in a U-shaped channel (4) under action of a weight and movement of a user. The movable elements include a group with a higher inertia movable element (2B) provided with a drive counterweight to drive a lower inertia movable element (2A) of another group of the movable elements. Each of the movable elements comprises a sliding surface arranged to cooperate with a bottom part (5) of the channel, where the bottom part is metal-coated, chromium plated, nickel plated or silvery. An independent claim is also included for a casing assembly comprising a watch case and a glass.