US 12,221,208 B2
Self-folding propeller
Ryan Goldstein, San Francisco, CA (US)
Assigned to Skydio, Inc., San Mateo, CA (US)
Filed by Skydio, Inc., San Mateo, CA (US)
Filed on Dec. 19, 2022, as Appl. No. 18/083,669.
Application 18/083,669 is a continuation of application No. 16/751,324, filed on Jan. 24, 2020, granted, now 11,535,369.
Application 16/751,324 is a continuation of application No. 15/455,132, filed on Mar. 10, 2017, granted, now 10,543,915, issued on Jan. 28, 2020.
Prior Publication US 2023/0303242 A1, Sep. 28, 2023
Int. Cl. B64C 27/50 (2006.01); B64C 11/28 (2006.01); B64U 10/13 (2023.01); B64U 30/293 (2023.01)
CPC B64C 27/50 (2013.01) [B64C 11/28 (2013.01); B64U 10/13 (2023.01); B64U 30/293 (2023.01)] 20 Claims
OG exemplary drawing
 
1. An unmanned aerial vehicle comprising:
a propeller blade comprising:
a hole; and
a connector located at a root of the propeller blade, the connector including a projection and a shoulder; and
a central hub comprising:
an opening configured to receive the projection;
a portion of a face, wherein the shoulder engages with the portion of the face in a first rotational position of the propeller blade;
hub holes; and
a wound torsion spring with a hole;
wherein the holes of the propeller blade, and the central hub, and the wound torsion spring are concentric so that the propeller blade is movably connected to the central hub via the hub holes,
wherein the propeller blade is movable within a blade plane between a folded state and a flight state, and
wherein the blade plane is a plane that the propeller blade moves through during flight of the unmanned aerial vehicle.