US 12,448,098 B2
Propeller
Gregory Charles Sharrow, Grosse Pointe Park, MI (US)
Assigned to Sharrow Engineering LLC, Shelby Township, MI (US)
Filed by Sharrow Engineering LLC, Shelby Township, MI (US)
Filed on Jun. 11, 2024, as Appl. No. 18/739,753.
Application 18/739,753 is a continuation of application No. 18/194,994, filed on Apr. 3, 2023, granted, now 12,030,606.
Application 18/194,994 is a continuation of application No. 17/577,587, filed on Jan. 18, 2022, granted, now 11,649,026.
Application 17/577,587 is a continuation of application No. 15/897,767, filed on Feb. 15, 2018, granted, now 11,273,892, issued on Mar. 15, 2022.
Application 15/897,767 is a continuation of application No. 15/605,764, filed on May 25, 2017, granted, now 9,926,058, issued on Mar. 27, 2018.
Claims priority of provisional application 62/508,139, filed on May 18, 2017.
Claims priority of provisional application 62/342,284, filed on May 27, 2016.
Prior Publication US 2024/0336341 A1, Oct. 10, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. B63H 1/26 (2006.01); B64C 11/00 (2006.01); B64C 11/16 (2006.01); B64C 11/18 (2006.01); B64C 11/20 (2006.01); F01D 5/14 (2006.01); F03D 1/06 (2006.01); F04D 29/38 (2006.01); F04D 17/02 (2006.01); F04D 29/28 (2006.01)
CPC B63H 1/265 (2013.01) [B64C 11/00 (2013.01); B64C 11/005 (2013.01); B64C 11/16 (2013.01); B64C 11/18 (2013.01); B64C 11/20 (2013.01); F01D 5/141 (2013.01); F03D 1/06 (2013.01); F03D 1/0625 (2013.01); F04D 29/384 (2013.01); F04D 17/025 (2013.01); F04D 29/281 (2013.01); F05B 2210/16 (2013.01); F05B 2250/24 (2013.01); F05B 2250/25 (2013.01); F05B 2250/26 (2013.01)] 10 Claims
OG exemplary drawing
 
1. 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.