ELECTRICAL TOOTHBRUSH TRANSMISSION CONNECTION STRUCTURE
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United States of America Patent
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Issued Date -
Oct 21, 2021
app pub date -
Apr 15, 2020
filing date -
Apr 15, 2020
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Abstract
An electrical toothbrush transmission connection structure includes a transmission shaft and a motor. The transmission shaft has a first sleeve at one end. The first sleeve has a first connection section. The motor has a rotary shaft. A second sleeve is disposed on the rotary shaft. The second sleeve has a second connection section. The first and second connection sections have corresponding cross-sectional shape and are correspondingly connected with each other so that the electrical toothbrush transmission connection structure has better transmission connection structure and effect.
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