Yoyo with propeller blades
AssigneeYOYOdrone, LLC
InventorJohn Taylor Christiansen
Life of this patent
Estimating the term…
Abstract
In an example embodiment, a yoyo includes an axle, a first body and a second body coupled to the axle, and a string windable about the axle within a gap between the first body and the second body. The first body includes an outer rim and multiple propeller blades that extend inward from the outer rim toward the axle. The gap between the first body and the second body is smaller than three times a diameter of the string. A diameter of the axle is no larger than one sixth of the diameter of the first or second outer rim. An aggregate mass of the first and second outer rims is at least one quarter of an aggregate mass of the yoyo, string excluded.
Claims20
A yoyo, comprising:
- an axle;
- a first body and a second body coupled to the axle;
- and
- a string windable about the axle within a gap between the first body and the second body;
- wherein:
- the first body comprises a first outer rim and multiple first propeller blades that extend inward from the first outer rim toward the axle;
- the second body comprises a second outer rim with a diameter equal to a diameter of the first outer rim in the first body and multiple second propeller blades that extend inward from the second outer rim toward the axle;
- the gap between the first body and the second body is smaller than three times a diameter of the string;
- and
- a diameter of the axle is no larger than one sixth of the diameter of the first or second outer rim;
- and
- an aggregate mass of the first and second outer rims is at least one quarter of an aggregate mass of the yoyo, string excluded.
A yoyo, comprising:
- a first body rotatable about an axis of rotation, the first body including a first outer rim and multiple first propeller blades that extend radially inward from the first outer rim;
- a second body coupled to the first body and rotatable about the axis of rotation, the second body including a second outer rim and multiple second propeller blades that extend radially inward from the second outer rim;
- and
- a string seat that axially separates the first body from the second body by a gap and that defines the axis of rotation, wherein:
- the first outer rim and the second outer rim have a same diameter;
- a string is windable and unwindable about the string seat to cause rotation of the yoyo about the axis of rotation;
- the gap between the first body and the second body is smaller than three times the diameter of the string;
- the diameter of the string seat between the two bodies is no larger than one sixth of the diameter of each of the first outer rim and the second outer rim;
- and
- an aggregate mass of the first outer rim and the second outer rim is at least one quarter of the mass of the yoyo, string excluded.
Dependencies are inferred from the claim text.