Ultrasonic transducer with a sealed 3D-printed mini-horn array
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United States of America Patent
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Apr 4, 2023
Grant Date -
Apr 2, 2020
app pub date -
Oct 1, 2018
filing date -
Oct 1, 2018
priority date (Note) -
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Abstract
A flow meter includes a pair of ultrasonic transducers. Each transducer includes a housing, a piezoelectric crystal disposed within the housing, and a mini-horn array coupled to the housing. The mini-horn array, which may be formed via a 3D printing technique, includes an opening-free enclosure, a closed cavity inside the enclosure, and a plurality of horns enclosed within the closed cavity. The horns include a horn base portion adjacent to a proximal end surface of the cavity and a horn neck portion that extends from the base portion in a direction away from the piezoelectric crystal and towards a distal end surface of the cavity. The horn neck portions are separated by spaces within the cavity, wherein the spaces between the horn necks may be filled with powder.
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