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Timepiece hand

A pointer, metal alloy technology, applied in the field of watch hands

Inactive Publication Date: 2013-05-08
THE SWATCH GRP RES & DEVELONMENT LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the case of pointers made by LIGA-type material growth, the disadvantage is that the walls of the pointers are straight, so there is no possibility of tilting of the angled type

Method used

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  • Timepiece hand
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Examples

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Embodiment Construction

[0045] figure 1 A timepiece 1 is shown comprising several hands 2 indicating information on the dial of said timepiece. These hands 2 may be hands indicating hours, minutes or seconds. They can be driven by continuous or reversing displacements, which can include sudden accelerations. Sudden acceleration is understood to mean a sudden acceleration, whether foreseeable or not, which occurs within a limited time and is of very high magnitude, wherein said acceleration is followed by zero displacement, constant acceleration or low acceleration. The minimum tolerable sudden acceleration is 250000rad·s -2 , and preferably 1.10 6 rad·s -2 . These pointers 2 can also be pointers of a timing mechanism or a calendar mechanism or other mechanisms. as in figure 2 The pointer 2 shown in , consists of a rod 3 having a length that is much greater than the width of the rod 3, and the width itself is much greater than the thickness. The first end 31 of the stick is used to indicate a...

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Abstract

The invention relates to a special hand for sudden acceleration. Said hand (2) is mounted such that it can pivot about an axis (10) so as to be able to indicate a piece of information. Said hand is produced from an at least partially amorphous metal alloy.

Description

technical field [0001] The invention relates to a timepiece hand, wherein said hand is mounted to pivot about an axis in order to indicate a piece of information. [0002] The technical field of the present invention is the technical field of precision machinery. Background technique [0003] Timepieces having hands are known. These pointers consist of a rod whose length is much greater than its width, which itself is much greater than its thickness. These pointers include openings for pressing them onto the shaft so as to be mounted pivotable. In order to have thin and strong hands, hands formed of crystalline metals such as steel, copper, gold or even silicon or ceramics are provided. These pointers can be produced by laser or water jet machining or cutting thin sheets. They may also be molded, sintered or formed by material growth or deposition. These hands are then used, for example, to indicate hours, minutes and seconds, but also to perform certain functions, such...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G04B19/04B22C9/20B22D17/00B22D19/04B22D25/02G04D3/00
CPCG04B19/042B22D25/026G04D3/0046C22C45/10B22D17/007G04B19/04
Inventor J-L·黑尔费尔Y·温克勒
Owner THE SWATCH GRP RES & DEVELONMENT LTD
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