US 12,071,218 B2
Automated variable pitch propeller blade
Scott Patrick Campbell, Belmont, CA (US); Leo Baldwin, Seattle, WA (US); and Gary Fong, Cupertino, CA (US)
Assigned to GoPro, Inc., San Mateo, CA (US)
Filed by GoPro, Inc., San Mateo, CA (US)
Filed on May 20, 2022, as Appl. No. 17/749,915.
Application 17/749,915 is a continuation of application No. 16/844,672, filed on Apr. 9, 2020, granted, now 11,352,125.
Application 16/844,672 is a continuation of application No. 15/231,783, filed on Aug. 9, 2016, granted, now 10,618,629, issued on Apr. 14, 2020.
Prior Publication US 2022/0274686 A1, Sep. 1, 2022
Int. Cl. B64C 11/26 (2006.01); B64C 11/20 (2006.01); B64C 11/34 (2006.01); B64C 39/02 (2023.01); B64U 10/13 (2023.01); B64U 30/20 (2023.01)
CPC B64C 11/26 (2013.01) [B64C 11/20 (2013.01); B64C 11/34 (2013.01); B64C 39/024 (2013.01); B64U 10/13 (2023.01); B64U 30/20 (2023.01)] 20 Claims
OG exemplary drawing
 
1. A propeller blade comprising:
a first material comprising fibers, wherein the fibers are oriented perpendicular to a chord line of the propeller blade and vertically between an upper side of the propeller blade and a lower side of the propeller blade; and
a second material different from the first material, wherein the fibers are interspersed through the second material and the fibers are oriented in a same direction within the second material,
wherein the propeller blade is anisotropic and includes sections of the fibers; and
wherein the second material is located from a leading edge to a trailing edge and a volume fraction of the first material decreases from the leading edge to the trailing edge of the propeller blade.