Abstract: A fan includes a motor, a rotatable hub coupled to the motor, and at least one fan blade. The at least one fan blade includes a first end coupled to the rotatable hub, a second end, a leading edge, a trailing edge, a passage extending from the first end to the second end, and a winglet attached to the second end. At least one flexible strap extends through the passage of the at least one fan blade. The flexible strap is coupled at a first end to the rotatable hub and coupled at a second end to the winglet, such as to an inner portion thereof within the passage.

Abstract: A fan includes a motor, a rotatable hub coupled to the motor, and at least one fan blade. The at least one fan blade includes a first end coupled to the rotatable hub, a second end, a leading edge, a trailing edge, a passage extending from the first end to the second end, and a winglet attached to the second end. At least one flexible strap extends through the passage of the at least one fan blade. The flexible strap is coupled at a first end to the rotatable hub and coupled at a second end to the winglet, such as to an inner portion thereof within the passage.

Abstract: A fan includes a motor, a rotatable hub coupled to the motor, and at least one fan blade. The at least one fan blade includes a first end coupled to the rotatable hub, a second end, a leading edge, a trailing edge, a passage extending from the first end to the second end, and a winglet attached to the second end. At least one flexible strap extends through the passage of the at least one fan blade. The flexible strap is coupled at a first end to the rotatable hub and coupled at a second end to the winglet, such as to an inner portion thereof within the passage.

Abstract: A fan includes a motor, a rotatable hub coupled to the motor, and at least one fan blade. The at least one fan blade includes a first end coupled to the rotatable hub, a second end, a leading edge, a trailing edge, a passage extending from the first end to the second end, and a winglet attached to the second end. At least one flexible strap extends through the passage of the at least one fan blade. The flexible strap is coupled at a first end to the rotatable hub and coupled at a second end to the winglet, such as to an inner portion thereof within the passage.

Abstract: A fan includes a motor, a rotatable hub coupled to the motor, and at least one fan blade. The at least one fan blade includes a first end coupled to the rotatable hub, a second end, a leading edge, a trailing edge, a passage extending from the first end to the second end, and a winglet attached to the second end. At least one flexible strap extends through the passage of the at least one fan blade. The flexible strap is coupled at a first end to the rotatable hub and coupled at a second end to the winglet, such as to an inner portion thereof within the passage.

Abstract: A fan comprises a rotatable hub assembly having an inner anchor assembly, a plurality of fan blades, a motor assembly, and a plurality of cables. The outer ends of the cables are coupled to the outer ends of the fan blades, and the inner ends of the cables are coupled to the inner anchor assembly. The inner anchor assembly may further include a disc-shaped plate and a plurality of inner anchor members to which the cables may be coupled. The inner anchor members may include a rear anchor portion and fore anchor portion, and these anchor portions may be angularly offset. A plurality of winglets and/or outer anchor members may be coupled to the outer ends of the fan blades to which the outer ends of the cables may be coupled. The outer ends of the cables may further comprise swaged tips outboard of the winglets and/or outer anchor members.

Abstract: A fan comprises a rotatable hub assembly having an inner anchor assembly, a plurality of fan blades, a motor assembly, and a plurality of cables. The outer ends of the cables are coupled to the outer ends of the fan blades, and the inner ends of the cables are coupled to the inner anchor assembly. The inner anchor assembly may further include a disc-shaped plate and a plurality of inner anchor members to which the cables may be coupled. The inner anchor members may include a rear anchor portion and fore anchor portion, and these anchor portions may be angularly offset. A plurality of winglets and/or outer anchor members may be coupled to the outer ends of the fan blades to which the outer ends of the cables may be coupled. The outer ends of the cables may further comprise swaged tips outboard of the winglets and/or outer anchor members.

Abstract: A fan blade comprises an airfoil profile having a lower surface, an upper surface, a trailing edge, and a leading edge. The lower surface comprises a concave portion which is defined by a first ellipse. The upper surface comprises a convex portion which is defined by a second ellipse. The leading edge and the trailing edge are of a substantially convex shape and transition the concave shape of the lower surface to the convex shape of the upper surface. A maximum thickness of the airfoil profile is defined at a point along the airfoil profile proximal to the leading edge of the fan blade. A chord length is defined as a lineal distance between an outermost point of the leading edge and an outermost point of the trailing edge. The dimensions of the airfoil profile, including those of the first ellipse and second ellipse, are functions of the chord length.

Abstract: A fan comprises a rotatable hub assembly having an inner anchor assembly, a plurality of fan blades, a motor assembly, and a plurality of cables. The outer ends of the cables are coupled to the outer ends of the fan blades, and the inner ends of the cables are coupled to the inner anchor assembly. The inner anchor assembly may further include a disc-shaped plate and a plurality of inner anchor members to which the cables may be coupled. The inner anchor members may include a rear anchor portion and fore anchor portion, and these anchor portions may be angularly offset. A plurality of winglets and/or outer anchor members may be coupled to the outer ends of the fan blades to which the outer ends of the cables may be coupled. The outer ends of the cables may further comprise swaged tips outboard of the winglets and/or outer anchor members.

Abstract: A fan comprises a rotatable hub assembly having an inner anchor assembly, a plurality of fan blades, a motor assembly, and a plurality of cables. The outer ends of the cables are coupled to the outer ends of the fan blades, and the inner ends of the cables are coupled to the inner anchor assembly. The inner anchor assembly may further include a disc-shaped plate and a plurality of inner anchor members to which the cables may be coupled. The inner anchor members may include a rear anchor portion and fore anchor portion, and these anchor portions may be angularly offset. A plurality of winglets and/or outer anchor members may be coupled to the outer ends of the fan blades to which the outer ends of the cables may be coupled. The outer ends of the cables may further comprise swaged tips outboard of the winglets and/or outer anchor members.