Wind Resistant Umbrella

Abstract

The umbrella having a shaft, a plurality of ribs movably engaged to the shaft, an umbrella cloth having a periphery and an internal surface attached on the ribs, and in addition, a strengthening member in form of a loop operatively associated to the internal surface of the umbrella cloth at a position adjacent to the periphery of the umbrella cloth. The size of the loop is smaller than the periphery of the umbrella cloth such that the strengthening member pulls the umbrella cloth against the ribs when the umbrella is open. The strengthening member reinforces the ribs against the upward force from the wind, and resists the ribs from flexing upward.

1 . An umbrella, having a shaft, a plurality of ribs movably engaged to the shaft, and an umbrella cloth having a periphery and an internal surface attached on the ribs, wherein the umbrella further comprises:
 a strengthening member in form of a loop operatively associated with the internal surface of the umbrella cloth at a position adjacent to said periphery, wherein the size of said loop is smaller than said periphery, for pulling the umbrella cloth against the ribs when the umbrella is open,   whereby said strengthening member reinforces the ribs against the upward force from the wind, and resists the ribs from flexing upward.   
   
   
       2 . The umbrella, as recited in  claim 1 , further comprising a connecting member having a first end attached to said internal surface of the umbrella cloth at a position adjacent to said periphery, and a second end for holding the strengthening member when the umbrella is open. 
   
   
       3 . The umbrella, as recited in  claim 2 , wherein said connecting member forms a substantial right angle adjacently with the shaft when the umbrella is open. 
   
   
       4 . The umbrella, as recited in  claim 2 , wherein said connecting member is a strip of cloth forming a channel at the second end for receiving the strengthening member. 
   
   
       5 . The umbrella, as recited in  claim 2 , wherein said connecting member is a tubular strip of cloth for receiving the strengthening member. 
   
   
       6 . The umbrella, as recited in  claim 1 , wherein the strengthening member is a flexible cord. 
   
   
       7 . An umbrella, having a shaft, a plurality of ribs movably engaged to the shaft, and an umbrella cloth having a periphery and an internal surface attached on the ribs, wherein the umbrella further comprises:
 a strengthening member in form of a loop operatively associated to the internal surface of the umbrella cloth at a position adjacent to said periphery, wherein the size of said loop is smaller than said periphery, for pulling the umbrella cloth against the ribs when the umbrella is open;   a connecting member having a first end attached to said internal surface of the umbrella cloth at a position adjacent to said periphery, and a second end for holding the strengthening member when the umbrella is open,   whereby said strengthening member reinforces the ribs against the upward force from the wind, and resists the ribs from flexing upward.