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Aircraft kite

InactiveUS6854690B2Reduce vibrationEffect flight characteristicToy aircraftsKitesJet aeroplanePropeller
A kite in the shape of an aircraft having one or more wings. The number of wings can vary due to novel V-shaped connection members employed together with strut rod members cut to predetermined lengths. The connection members are preformed V-shaped connectors slidably mounted to spar members disposed in open-ended sleeves in the leading and trailing edges of a wing and may be oriented to receive strut members form either above or below the wing, for efficiency manufacturing, ease in assembly, and minimum exposure to breakage during operation, storage and transport. Additional connection members may be added to the spar members to receive strut members connected to additional wings thereby allowing for an airplane kite having one wing, two wings, three wings, or more. Multiple-V connectors may be combined to create hubs for propellers or wheels that rotate when they encounter a front wind. Ram air openings are utilized in the fuselage of the kite to maintain the shape of the fuselage and the angles of wings. Additionally, the wings are equipped with air scoop pockets for added stability and performance under a large spectrum of flying conditions and improved appearance of the wings without requiring spars along the out edges of the wings. Similar ram air openings or air scoop pockets are utilized in the tail fin members for increased stability and flight characteristics, the tail fins receiving air from either within the fuselage or from outside the fuselage, respectively.
Owner:TABOR DON

Individualized 3D printing multifunctional artificial orbital implant and preparation method thereof

The invention discloses an individualized 3D printing multifunctional artificial orbital implant and a preparation method thereof. The surface of the artificial orbital implant has a porous structure,the pores of the porous structure are circular pores, and the porous structure of the surface is arranged in a gradient manner, and the pores in the porous structure are arranged on the surface of the artificial orbital implant spaced apart; a special structure for fixing four extraocular muscles is arranged on the artificial orbital implant, the special structure consists of two elliptical holeswhich penetrate each other and are arranged close to each other, the preset sutures on the extraocular muscles pass through the two elliptical foramen and are knotted and fixed at the intersection of30 degree north latitude and 0 degree, 90 degree, 180 degree and 270 degree longitude respectively. The prosthetic orbital implant is printed directly by the digital model of the prosthetic orbital implant using 3D printing technology. The artificial orbital implant has high matching degree with the healthy eye and reduces the risk of exposure and infection after implantation of the orbital implant. The artificial orbital implant has good mobility and good simulation effect with individualized ophthalmic prosthesis, and has good clinical application value.
Owner:ZHEJIANG UNIV
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