Umbrella

Abstract

An umbrella includes a shaft rod having a ferrule fixed to one end thereof and a handle fixed to the other end thereof, a wheel fitted around the shaft rod and adapted to be moved slidingly toward the ferrule and retained on the shaft rod by a resilient locking device when the umbrella is opened, and toward the handle when the umbrella is closed, a plurality of elastic support ribs connected pivotably at one end of each thereof to the frame and extended symmetrically with respect to the axis of the shaft rod, auxiliary support ribs connected pivotably at one end of each thereof to the ferrule, extended along the corresponding elastic support ribs respectively, and connected pivotably at the other end of each thereof to the elastic support ribs, and an umbrella cloth extended so as to cover outer sides of the auxiliary support ribs and elastic support ribs.

1 . An umbrella comprising a shaft rod having a ferrule fixed to one end thereof and a handle fixed to the other end thereof, a wheel fitted around the shaft rod and adapted to be moved slidingly toward the ferrule and retained on the shaft rod by a resilient locking device when the umbrella is opened, and toward the handle when the umbrella is closed, a plurality of elastic support ribs connected pivotably at one end of each thereof to the frame and extended symmetrically with respect to the axis of the shaft rod, auxiliary support ribs connected pivotably at one end of each thereof to the ferrule, extended along the corresponding elastic support ribs respectively, and connected pivotably at the other end of each thereof to the elastic support ribs, and an umbrella cloth extended so as to cover outer sides of the auxiliary support ribs and elastic support ribs.