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US 2018/0237122 A1Published application
Propeller
AssigneeSharrow Engineering LLC
InventorGregory Charles Sharrow
Life of this patent
Estimating the term…
Abstract
A propeller having a central post to which one or more blades are connected. The blades are disposed and configured to pull air in from the propeller's sides toward the propeller's axis of rotation to create pressure in an area in the vicinity of the center of the propeller's rotating axis for generating thrust.
Claims19
A propeller comprising:
- a central post coincident with a rotational axis;
- one or more blades each having a distal end and a proximate end;
- each of the one or more blades comprising a top section, a bottom section, and a side section, the side section disposed at or toward the distal end;
- the length from the central post to the distal end of each of the one or more blade's leading edge is greater than the length from the central post to the distal end of each of the one or more blade's trailing edge such that the outermost foil of the side section is configured to pull fluid inward from the side section of the one or more blades toward the propeller rotational axis by having a non-zero blade angle;
- the top section and the bottom section of each of the one or more blades connected at the proximate end to and extending radially outward from the central post;
- wherein the top section extends from the central post outward to the side section at a top section distal end and the side section folds back to the central post to a bottom section distal end so a top surface of the top section becomes a bottom surface of the bottom section;
- a gap between central post connections of the top section and bottom section of at least one of the one or more blades;
- and
- the one or more blades further configured to pull fluid from a propeller front end to a propeller back end.
6 more elements
A propeller comprising:
- a central post coincident with a rotational axis;
- one or more blades each having a distal end and a proximate end, each of the one or more blades disposed and configured to pull air inward from the blade's side sections toward the propeller's rotational axis and from the propeller's front to its back by comprising;
- a top section, a bottom section, and a side section, the side section disposed at or toward the distal end;
- wherein the top section extends from the central post outward to the side section at a top section distal end and the side section folds back to the central post to a bottom section distal end so a top surface of the top section becomes a bottom surface of the bottom section;
- a gap between central post connections of the top section and bottom section of at least one of the one or more blades wherein air is compressed upon rotation of the propeller;
- wherein at least one of the blade top section, bottom section or side section of at least one of the one or more blades has a median line that is curved;
- and
- wherein a twist about the median line forming the curvature of the one or more blades is in a range of about 30° to about 40°.
5 more elements
Dependencies are inferred from the claim text.