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Pressure instrument with depth/altitude and time display

  • US 5,148,376 A
  • Filed: 07/10/1990
  • Issued: 09/15/1992
  • Est. Priority Date: 07/12/1989
  • Status: Expired due to Term
First Claim
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1. A pressure instrument comprising:

  • pressure detecting means for detecting external pressure outside of the pressure instrument;

    measured data generating means for generating measured data corresponding to the external pressure detected by said pressure detecting means;

    start/stop signal generating means for generating a measurement start signal and a measurement stop signal;

    measurement-time counting means for obtaining measurement-time data representative of a time period between the time when the measurement start signal is generated by said start/stop signal generating means and the time when the measurement stop signal is generated by said start/stop signal generating means;

    time detecting means for detecting whether or not the measurement-time data obtained by said measurement-time counting means is longer than a predetermined time period;

    memory means for storing the measured data which are generated by said measured data generating means during the time period between the time when the start signal is generated and the time when the stop signal is generated with such storing of the measured data occurring only when said start/stop signal generating means has generated the measurement stop signal and said time detecting means has detected that the measurement-time data is longer than said predetermined time period; and

    measured data display means for displaying the measured data stored in said memory means.

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