Two tiered vented canopy wind resistant umbrella

Abstract

Disclosed herein is an new structure of a two tiered vented canopy wind resistant umbrella. The front portion of each umbrella rib is divided into parallel, but different lengthed first and second rib sections on which two mutually overlapped umbrella covers are laid on forming a fissure therebetween so as to release the wind force. Moreover, several spring elements are intercalated in the fissure between the two umbrella covers so as to protect the first rib sections form over flexing or even breaking due to strong wind force.

What is claimed is:  
     
         1 . A two tiered canopy wind umbrella comprising: 
 a telescoping backbone formed of a plurality of telescoping tube sections for sustaining said umbrella;    an upper nest fixed to a cap of said umbrella on top of said backbone;    a lower nest being slidably sleeved over said backbone to be movable up and down along said backbone;    a plurality of foldable umbrella ribs each being formed of several rib sections hinged together, wherein its front portion is divided into parallel, but different lengthed first rib section and second rib section overlapping in the manner the shorter first rib section being laid above the longer second rib section;    a first umbrella cover being connected to said upper nest cap and said first rib sections;    a second umbrella cover being laid over said second rib sections with its lower portion overlapped by said first umbrella cover leaving a wind releasing fissure therebetween; and    a plurality of spring elements each of them being concealingly intercalated in said wind releasing fissure with its one end sewed to the tip of said first rib section, while its other end sewed to near the middle portion of said second umbrella cover.    
     
     
         2 . The umbrella as in  claim 1 , wherein said first umbrella cover is connected to said upper nest cap and said first rib sections by sewing its vertex to said upper nest cap and sewing its lower edge onto the tip of each first rib section.  
     
     
         3 . The umbrella as in  claim 1 , wherein said second umbrella cover is connected with said second rib sections by sewing its one edge to the lower end of each second rib section, and the other edge to the tip of each second rib section.  
     
     
         4 . The umbrella as in  claim 1 , wherein said spring elements are concealingly intercalated in said fissure formed between said two overlapping umbrella covers so not to spoil the outer looking of said umbrella.