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US 12,448,098 B2Granted
Propeller
AssigneeSharrow Engineering LLC
InventorGregory Charles Sharrow
Life of this patent
Estimating the term…
Abstract
A propeller having a plurality of blades extending radially outward from a hub, the blades forming a loop. Each loop can have an intake portion, an exhaust portion and a tip portion extending radially outward from the hub and a gap between the intake root and the exhaust root.
Claims10
A propeller comprising:
- a plurality of blades, each of the plurality of blades having an intake portion, an exhaust portion, and a tip portion extending from the intake portion to the exhaust portion;
- a hub;
- the plurality of blades, each blade forming a loop-extending outward from the hub and disposed around the hub, each blade connected with the hub via a root of the intake portion and a root of the exhaust portion, wherein the root of the exhaust portion is forward of the root of the intake portion when extending outward from the hub;
- each blade comprising a plurality of parameter sections having selected one or more of the parameters including skew angle, roll angle, rake, radius, pitch angle, and vertical angle values;
- a parameter section of the plurality of parameter sections at the transition from the intake portion to the tip portion defined by parameters to cause the amount of non-axial lift in the tip portion to be greater than the axial lift in the tip portion;
- and
- a parameter section of the plurality of parameter sections or an area between consecutive parameter sections of the plurality of parameter sections in the tip portion having a roll value of 90 degrees.
4 more elements
Dependencies are inferred from the claim text.