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US 2004/0005837 A1Published application
Self-returning aerial glider
OwnerJohn C. Wanginventor
Life of this patent
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Abstract
A self-returning aerial glider is disclosed, which can be launched to travel outwardly away from the point of launching and subsequently reverse its flight and return to the location of launching. The object is comprised of a generally ring-shape planar body conforming to specific dimensional proportions and mass-to-projected-area ratios optimized to producing favorable return glide behaviors.
Claims16
An aerial device, comprising:
- a planar body, including
- an upper and a lower surface,
- a central opening,
- an inner perimeter encompassing said central opening, said inner perimeter having a center,
- an outer perimeter encompassing said inner perimeter, said outer perimeter having a center,
- said outer and inner perimeters are approximately determined by the application of the following formula:
- 2 r < 12 cm s = 0.833 r to 0.900 r r >= 12 cm and r < 24 cm s = 0.750 r to 0.892 r r >= 24 cm and r < 48 cm s = 0.667 r to 0.884 r r > 48 cm s = 0.634 r to 0.875 r where r is computed by taking the average of the distances taken along said outer perimeter from said center of said outer perimeter, s is computed by taking the average of the distances taken along said inner perimeter from said center of said inner perimeter.
4 more elements
An aerial device, comprising:
- a planar body, including
- an upper and a lower surface,
- a central opening,
- an inner perimeter encompassing said central opening,
- an outer perimeter encompassing said inner perimeter,
- said planar body has a weight of less than 0.15 grams per square centimeter of projected area.
3 more elements
An aerial device, comprising:
- a planar body, including
- an upper and a lower surface,
- a central opening,
- a substantially circular inner perimeter encompassing said central opening, said inner perimeter having a center,
- a substantially circular outer perimeter encompassing said inner perimeter, said outer perimeter having a center,
- said outer and inner perimeters are approximately determined by the application of the following formula:
- 3 r < 12 cm s = 0.833 r to 0.900 r r >= 12 cm and r < 24 cm s = 0.750 r to 0.892 r r >= 24 cm and r < 48 cm s = 0.667 r to 0.884 r r >= 48 cm s = 0.634 r to 0.875 r where r radius of said outer perimeter s radius of said inner perimeter.
4 more elements
Dependencies are inferred from the claim text.