Device and method for testing the leak-tightness of a timepiece case
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Abstract
The present invention concerns a device for monitoring the water resistance of a case (2) of an electronic timepiece (1) including a time base (42) for generating a standard frequency signal and a central processing unit (44) for determining the time from the standard signal, characterized in that it includes an electronic sensor (32) capable of measuring fluctuations in the concentration of a gas in the atmosphere contained in the case (2), the results of the measurement carried out by the electronic sensor (32) being processed by the central processing unit (44) which, in response to the measurement signal, emits, if necessary, an acoustic or visual alarm.
19 Citations
25 Claims
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1-12. -12. (canceled)
- 13. A device for monitoring the water resistance of a case of an electronic timepiece including a time base for generating a standard frequency signal and a central processing unit for determining the time from the standard signal, wherein it includes an electronic sensor capable of measuring fluctuations in the concentration of a gas in the atmosphere contained in the case, the results of the measurement carried out by the electronic sensor being processed by the central processing unit which, in response to the measurement signal, emits, if necessary, an acoustic or visual warning alarm.
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18. A method of monitoring the water resistance of a case of a timepiece, wherein it includes the steps of:
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introducing a gas with an initial concentration into the atmosphere contained in the case;
measuring the initial concentration of gas;
continuously or intermittently measuring the concentration of gas, and generating an alarm when the measured concentration of gas is different from the initial concentration of said gas or when the leak rate exceeds a predetermined value. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25)
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Specification