Metal detector with hermetic housing
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United States of America Patent
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May 24, 2016
Grant Date -
N/A
app pub date -
Dec 24, 2014
filing date -
Dec 24, 2014
priority date (Note) -
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status (Latency Note)
Importance
Abstract
A hermetically sealed metal detector includes a plastic housing with an integrally formed diaphragm having a predetermined area and a thickness that enables vibration thereof by an internal acoustic transducer. An alert signal audibly drives the transducer in response to a metal detector circuit. The acoustic transducer is positioned to align the transducer output port adjacent to the interior surface of the diaphragm, which enables coupling of the acoustic signal through an air gap to vibrate the diaphragm. A cover is disposed about the diaphragm on the exterior of the housing. The cover has a vent formed therethrough for enabling passage of the acoustic energy to the exterior of the housing. Light and battery hermetic sealing are also presented.
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