Horology: time measuring systems or devices – Combined with disparate device
Patent
1997-03-10
1999-03-09
Roskoski, Bernard
Horology: time measuring systems or devices
Combined with disparate device
340574, 340693, 368243, G08B 1502
Patent
active
058810218
ABSTRACT:
A personal security alarm in the form of a wearable case containing an sonic alarm transducer, a capacitor power supply, and a manually operable trigger for completing an electrical circuit between the power supply and the alarm transducer to operate the transducer by discharging the power supply. An oscillator is electrically connected between the power supply and the alarm transducer when the trigger operates, to output a variable frequency signal. An amplifier electrically connected between the oscillator and the alarm transducer amplifies the tone signal and drives the alarm transducer with the amplified signal. The oscillator can be programmed with a predefined variable frequency signal. A charger can be coupled through the case to charge the capacitor power supply without removing the power supply from the case. If the alarm is triggered, a catch mechanism must be released to deactivate the sonic alarm prior to completion of a preset interval, thus thwarting potential deactivation of the alarm, should an attacker seize control of it.
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Leipert Klaus
Mundy Frederick
Pirie Wendy D.
Rescorla Jon
Dreamco Enterprises Inc.
Roskoski Bernard
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