Flying cylinder

Abstract

A flying cylinder has a leading portion and a tail portion, wherein the leading portion is pointed to a degree such that the curf thickness is equal or less than 2 mm. In preferred flying toys, the tail portion has an average thickness of at least the thickness of the leading portion.

1 . A hand-propelled flying toy, comprising: 
 a cylindrical leading portion having a forward edge with a curf thickness of equal or less than 2.5 millimeter;    a cylindrical tail portion having an average thickness of equal to or at least 2 millimeter in an area that is between 4 centimeter and 6 centimeter from the forward edge; and    wherein the leading portion and the tail portion have a weight distribution such that the forward edge of the flying toy faces forward during flight.    
   
   
       2 . The flying toy of  claim 1  wherein the leading portion has maximum thickness that is equal to the average thickness of the tail portion.  
   
   
       3 . The flying toy of  claim 2  wherein the leading portion has a length of less than 2 cm when measured from the forward edge.  
   
   
       4 . The flying toy of  claim 2  wherein outside and inside surfaces of the leading portion form an angle of less than 35 degrees.  
   
   
       5 . The flying toy of  claim 1  wherein the inside surface of the leading portion is straight and parallel to an inside surface of the tail portion.  
   
   
       6 . The flying toy of  claim 1  wherein the leading portion has an outer diameter that is equal or less than an outer diameter of the tail portion.  
   
   
       7 . The flying toy of  claim 1  wherein a weight element is coupled to the leading portion.  
   
   
       8 . The flying toy of  claim 1  wherein at least one of the leading portion and the tail portion comprises a dimpled surface.  
   
   
       9 . A hand-propelled flying cylindrical toy having a cylindrical tail portion and a cylindrical leading portion, wherein the toy has a perimeter to curf ratio of between 100 and 200, and a perimeter to thickness of the tail portion of equal to or less than 100.  
   
   
       10 . The flying toy of  claim 9  wherein the cylindrical tail portion has an average thickness T T , wherein the cylindrical leading portion has an average thickness T F , and wherein T F ≦T T .  
   
   
       11 . The flying toy of  claim 9  wherein the leading portion has a length of less than 2 cm when measured from a forward edge.  
   
   
       12 . The flying toy of  claim 9  wherein the inside surface of the leading portion is straight and parallel to an inside surface of the tail portion.  
   
   
       13 . The flying toy of  claim 9  further comprising a weight element coupled to the leading portion.  
   
   
       14 . The flying toy of  claim 9  wherein outside and inside surfaces of the leading portion form an angle of less than 35 degrees.  
   
   
       15 . The flying toy of  claim 9  wherein the perimeter to curf ratio is between 130 and 170.  
   
   
       16 . The flying toy of  claim 9  wherein at least one of the leading portion and the tail portion comprises a dimpled surface.  
   
   
       17 . The flying toy of  claim 9  wherein the leading portion forms a forward edge such that the toy flies predictably at least 25 meters in a horizontal direction when manually thrown.  
   
   
       18 . The flying toy of  claim 9  wherein at least one of the perimeter to curf ratio is between 100 to 120 and a diameter of the cylindrical tail portion is less than 7 inches.  
   
   
       19 . A hand-propelled flying cylindrical toy having a cylindrical tail portion with an average thickness of at least 2 millimeters and a curf thickness of equal or less than 2.5 millimeters, wherein a leading portion forms a forward edge such that the toy flies predictably at least 25 meters in a horizontal direction when manually thrown.  
   
   
       20 . The flying toy of  claim 19  wherein the average thickness is measured in an area that is between 4 centimeter and 6 centimeter from the forward edge.