Vented cover for objects being transported in an airstream

Abstract

A cover is provided to protect an object being transported in an air stream. The cover is configured and disposed to have at least two surfaces, a windward surface and a leeward surface. The leeward surface has at least one vent therein disposed such that a zone of negative air pressure caused by the change in the air stream causes air trapped inside the cover to be sucked out of the cover through said vent.

I claim:  
     
         1 . A vented cover suitable for fitting over an object to be transported in an air stream, said cover comprising at least one pair of opposed, spaced-apart lateral surfaces, and one upright surface spacing apart said lateral surfaces, 
 said upright surface being disposed such that it faces away from the direction of travel of said object being transported in said air stream,    said upright surface comprising a vent therein, said vent being configured and disposed for fluid communication from the inside of the cover to the outside thereof;    
     
     
         2 . The vented cover of  claim 1  wherein said upright surface is disposed substantially at right angle to the direction of the air stream.  
     
     
         3 . The vented cover of  claim 1  wherein said vent is disposed adjacent an edge of said upright surface.  
     
     
         4 . A vented cover suitable for fitting over an object to be transported in an air stream, said cover comprising, once fitted over said object, a first surface having a plane, said first surface comprising a first edge, 
 said cover further comprising a second surface having a plane disposed such that it faces away from the direction of travel of said object, said second surface having a second edge,    wherein at least part of said first edge is in contact with at least part of said second edge,    said second surface comprising a vent therein configured and disposed so as to cause fluid communication between the inside of the cover and the outside thereof.    
     
     
         5 . The vented cover of  claim 4  wherein said vent is disposed adjacent that part of the second edge which is in contact with that part of the first edge.  
     
     
         6 . A vented cover suitable for covering an object to be transported in an air stream, said cover comprising, when fitted over the object, a first surface having a plane facing in a direction having an angle selected from the range comprising the direction of travel to 165° from the direction of travel, said surface having a first side edge, 
 a second surface having a plane facing in a direction having an angle greater than the angle of the first plane, said second plane having a second side edge,  
 at least a portion of said first edge being in contact with at least a portion of said second edge,  
 said second surface having therein a vent for fluid communication between the inside of the cover and the outside thereof.  
 
     
     
         7 . The vented cover of  claim 6  wherein said vent is disposed adjacent said second edge.  
     
     
         8 . A vented cover suitable for covering an object to be transported in an air stream, said cover comprising, when fitted over the object, a first surface having a plane whose normal is disposed at an angle χ from the direction of travel of said object, 
 said first surface comprising a first edge,  
 said cover further comprising a second surface having a plane whose normal is disposed an angle greater than χ,  
 said second surface having a second edge  
 wherein at least part of said first edge is in contact with at least part of said second edge  
 said second surface having therein a vent for fluid communication between the inside of the cover and the outside thereof.  
 
     
     
         9 . The vented cover of  claim 8  wherein said vent is disposed adjacent said second edge.