US Patent 11539279 Gap-closing actuator having a double-wound driving coil
Patent 11539279 was granted and assigned to Apple (company) on December, 2022 by the United States Patent and Trademark Office.
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Patent Inventor Names
Riccardo Tarelli0
Yumeng Liu0
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US Patent 11539279 Gap-closing actuator having a double-wound driving coil
Article
A haptic engine includes a gap-closing actuator having a double-wound driving coil in which the two windings can be activated with two driving sources, respectively. Or, the two windings double-wound driving coil can be activated with a single driving source when the two windings are connected with each other either in series or in parallel. By using the double-wound driving coil in the gap-closing actuator as described, an instant inductance of either of the two windings can be determined without having to measure in real time a resistance of the corresponding winding.
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Patent Applicant
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Patent Jurisdiction
Patent Number
115392790
Date of Patent
December 27, 2022
0Patent Application Number
169007440
Date Filed
June 12, 2020
0Patent Citations
Patent Primary Examiner
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