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 having 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. The tip portion of each of the blades is 30%-75% of the blade, the tip portion beginning at a first deviation from zero of the roll value and extending to 90 degrees, wherein roll value is zero in a plane parallel to the hub axis, and wherein the blades have a vertical angle between −45 degrees and 45 degrees throughout.
Claims7
A propeller for use with fluids, the propeller provided to propel an object or person or to move the fluid, the propeller comprising:
- a plurality of blades;
- a rotational axis coincident with a hub;
- each blade of the plurality of blades extending radially outward from the rotational axis and disposed around the rotational axis;
- each blade forming a loop and having an intake portion, an exhaust portion and a tip portion extending radially outward from the rotational axis;
- the loop of each blade having an intake root and an exhaust root, and a gap between the intake root and the exhaust root;
- the propeller having a configuration to generate non-axial lift and non-axial fluid flow that includes:
- the tip portion of each of the
- the blade plurality of blades is 30%-75% of the blade;
- and
- the tip portion beginning at a first deviation from zero of the roll value and extending to 90 degrees, wherein roll value is zero in a plane parallel to the hub axis;
- and
- the propeller having a configuration to redirect the non-axial fluid flow to axial fluid flow that includes:
- a vertical angle between −45 degrees and 45 degrees throughout.
A method of manufacturing a propeller having a plurality of blades, each blade 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, the method comprising:
- defining a plurality of parameter sections by selecting parameters including skew angle, roll angle, rake, radius, pitch angle, vertical angle values, wherein the selected values redirect lift;
- defining a parameter section at the transition from the intake portion to the tip portion 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;
- defining parameter sections to include a roll value of 90 degrees in the tip portion;
- and
- extrapolating between parameter sections to form smooth lines to form a blade configured to form a loop when attached to a hub by;
- attaching a plurality of the blades to the hub to form a propeller.
Dependencies are inferred from the claim text.