WIRELESS POWER SUPPLY SYSTEM
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United States of America Patent
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Issued Date -
Sep 21, 2023
app pub date -
Sep 4, 2020
filing date -
Sep 4, 2020
priority date (Note) -
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status (Latency Note)
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Abstract
A power transmission unit includes a plurality of power transmission coils provided along a hoistway and at least one power transmission device that supplies power to each of a plurality of power transmission coils. A power reception unit includes a plurality of power reception coils provided on a surface of a car opposite to the power transmission coil and at least one power reception device that receives the power from each of power reception coils. The plurality of power transmission coils include at least a first power transmission coil and a second power transmission coil. A length of the second power transmission coil in a traveling direction of the car is longer than a length of the first power transmission coil.
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