Is a
Patent attributes
Patent Applicant
Current Assignee
Patent Jurisdiction
Patent Number
Date of Patent
June 13, 2023
0Patent Application Number
174632290
Date Filed
August 31, 2021
0Patent Citations
Patent Citations Received
Patent Primary Examiner
A hub assembly having a first hub subassembly, a second hub subassembly, and a rotary guide. The first hub subassembly rotates a first blade assembly about an axis of rotation in a first plane. The second hub subassembly rotates a second blade assembly about the axis of rotation in a second plane. The rotary guide controls an axial position of the second hub subassembly relative to the first hub subassembly about the axis of rotation. The rotary guide is configured to adjust the axial position as a function of a lifting force generated by the first blade assembly or the second blade assembly.
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