Compact Integrated Rotary Joint with a Resonant Shield
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United States of America Patent
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Issued Date -
Aug 18, 2022
app pub date -
Apr 20, 2022
filing date -
Nov 14, 2019
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Abstract
A rotary joint includes a first part and a second part configured to rotate around a rotation axis against the first part. The first part has a first magnetic core and a capacitive data link component. The second part has a second magnetic core for coupling power with the a first magnetic core and a second capacitive data link component to transfer data from and/or to the first capacitive data link component. To weaken magnetic stray fields from the magnetic core, a resonant shield is provided outside the airgap between the magnetic cores. The resonant shield comprises an open ring-shaped structure, having two open ends which are connected by a capacitor to form a resonant circuit.
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