US 12,103,656 B2
Self-adjusting variable pitch propeller
Emil Bång, Bromma (SE); John Änggård, Skutskär (SE); and Mathias Andersson, Obbola (SE)
Assigned to SUBMERSED TECHNOLOGIES PP1 AB, Bromma (SE)
Appl. No. 18/573,911
Filed by SUBMERSED TECHNOLOGIES PP1 AB, Bromma (SE)
PCT Filed Jun. 28, 2022, PCT No. PCT/EP2022/067711
§ 371(c)(1), (2) Date Dec. 22, 2023,
PCT Pub. No. WO2023/275040, PCT Pub. Date Jan. 5, 2023.
Claims priority of application No. 21182266 (EP), filed on Jun. 29, 2021.
Prior Publication US 2024/0262477 A1, Aug. 8, 2024
Int. Cl. B63H 3/00 (2006.01)
CPC B63H 3/008 (2013.01) 16 Claims
OG exemplary drawing
 
1. A self-adjusting variable pitch propeller for marine use, comprising a central hub with an axial propeller centre line defining a rotational axis of the propeller and a plurality of blades extending radially from the hub, wherein
the hub exhibits a central bore arranged to receive a rotating drive shaft,
each blade is pivotally fixed to the hub and pivotal about a respective blade pivot axis which extends radially from the hub through the respective blade,
each blade exhibits a leading edge, a trailing edge, a pressure side exhibiting a pressure side area and a suction side exhibiting a suction side area,
the blades are mechanically interconnected to freely transfer pivotal movement of each blade to all other blades and wherein
the pivotal axis of each blade is positioned such that >50% of the suction side area and of the pressure side area is arranged between the trailing edge and the pivotal axis of the respective blade.