US 12,600,460 B2Granted

Propeller

AssigneeExedy Corporation

InventorsTatsuki Kitada, Mitsuru Kuwahata, Masahiro Ohno, Yasunori Kunisaki

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Abstract

A propeller designed to prevent unintentional folding of the blades includes a hub, a blade, a first engaging portion, and a second engaging portion. The blade is attached to the hub to be radially movable with respect thereto. The blade is attached to the hub to be pivotable with respect thereto. The first engaging portion is provided in the hub. The second engaging portion is provided in the blade. The second engaging portion is configured to be engaged with the first engaging portion to restrict the blade from pivoting with respect to the hub when the blade is moved radially outward. The second engaging portion is configured to be disengaged from the first engaging portion when the blade is moved radially inward.

Claims14

Dependent claims

A propeller, comprising:

a hub;
a blade attached to the hub to be pivotable and radially movable with respect thereto;
a first engaging portion provided in the hub;
and
a second engaging portion provided in the blade, the second engaging portion configured to be engaged with the first engaging portion to restrict the blade from pivoting with respect to the hub when the blade is moved radially outward, when engaged with the first engaging portion, the second engaging portion configured to overlap the first engaging portion when viewed in an axial direction, the second engaging portion configured to be disengaged from the first engaging portion when the blade is moved radially inward, when disengaged with the first engaging portion, the second engaging portion configured not to overlap the first engaging portion when viewed in the axial direction.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 19/183,289Filed 18 Apr 2025
Priority: JP 2024-07132225 Apr 2024
Published: US 2025/0333160 A130 Oct 2025
Granted: 14 Apr 2026
Term ends: Not estimatedThe source records don’t support an estimate.

Classification6 codes

B64C 11/28
Constructional features: collapsible or foldable blades
B64C 11/04
Hub construction: blade mountings
B64C 27/50
Constructional features: blades foldable to facilitate stowage of aircraft
B64U 30/293
Constructional aspects of rotors or rotor supports; Arrangements thereof: foldable or collapsible rotors or rotor supports