US 11,891,163 B2
Axial flow ducted fan with a movable section
Ayorinde Olusola Ajumobi, Brampton (CA)
Assigned to SUPRA LUMINA TECHNOLOGIES INC., Brampton (CA)
Filed by SUPRA LUMINA TECHNOLOGIES INC., Brampton (CA)
Filed on Feb. 16, 2023, as Appl. No. 18/110,391.
Application 18/110,391 is a continuation of application No. 16/913,174, filed on Jun. 26, 2020, granted, now 11,584,509.
Claims priority of provisional application 62/953,681, filed on Dec. 26, 2019.
Claims priority of provisional application 62/867,771, filed on Jun. 27, 2019.
Prior Publication US 2023/0242244 A1, Aug. 3, 2023
Int. Cl. B64C 11/00 (2006.01); B64C 29/00 (2006.01)
CPC B64C 11/001 (2013.01) [B64C 29/0016 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A duct, comprising:
a housing, the housing including at least:
a hollow interior;
an outer surface,
an inner surface, the inner surface being spaced at a distance from the outer surface to define a duct thickness,
a leading edge at an inlet end of the duct, and
a discharge edge at an outlet end of the duct,
the housing defining a flow axis between inlet and outlet ends;
a cutout in the housing at the leading edge of the duct, the cutout sized to traverse inner and outer wall surfaces and interrupt the leading edge of the duct, the cutout defining two side edges with each side edge being disposed in a plane being generally aligned with a direction of the flow axis and a leading edge of the cutout disposed in a plane being generally normal to the flow axis, the leading edge of the cutout having a curved surface; and
a reduced duct thickness portion between the two side edges, the reduced duct thickness portion including at least the inner surface, an outer surface of the reduced duct thickness portion, the outer surface of the reduced duct thickness portion being offset inwardly from the outer surface of the housing.