Multiple-fold automatic umbrella as ergonomically constructed and manipulated

A multiple-fold automatic umbrella comprising:

• a central shaft including a plurality of tubes telescopically engageable with one another;
• a rib assembly having an umbrella cloth secured thereon and including at least a top rib pivotally secured to an upper notch of the shaft, a stretcher rib pivotally connected with said top rib and a lower runner slidably held on said shaft, an intermediate rib connectable to said stretcher rib and said top rib, and a tail rib connectable to said intermediate rib;
• an opening spring retained in said shaft for opening the umbrella;
• a plurality of closing springs retained on said rib assembly for closing the umbrella;
• and
• a control means including at least a push button formed in a grip of said shaft, and a rope directed through an interior in said shaft, said lower runner and said upper notch on said shaft;
• said intermediate rib made of plastic and reinforced plastic materials by extrusion molding to have a cross section of two-lobe shape;
• said rib assembly further including said intermediate rib having an inner end thereof connected with an inner joint which is pivotally connected with an outer end of the stretcher rib and is pivotally connected to an outer portion of the ton rib by a connecting rib, said tail rib pivotally connected to the intermediate rib by an auxiliary intermediate rib which is pivotally connected to an outer joint of said intermediate rib, a spring rib juxtapositionally slidably coupled to the intermediate rib by a coupling ring, and an auxiliary spring rib pivotally connected between the intermediate rib and the tail rib;
• with a lining bracket formed between said inner joint of said intermediate rib and an outer portion of said stretcher rib;
• said lining bracket including a pivot hole formed in an outer portion of the bracket for pivotally connecting the inner joint with the outer end of the stretcher rib by a pivot, a lug protruding downwardly from the bracket through a lug hole formed in an outer portion of the stretcher rib for pivotally connecting an inner end of the spring rib, and a hook portion formed on an inner portion of the bracket for fastening an outer spring end of the closing spring of which an inner spring end is secured to an outer portion of the to rib;
• and
• said outer joint of the intermediate rib pivotally connected with an inner end of the auxiliary intermediate rib and the outer joint pivotally connected with an inner end of the auxiliary spring rib by a collar;
• with the inner end of the auxiliary intermediate rib pivotally connected with an outer end of the spring rib;
• and with the outer joint having a bottom interior provided for accommodating the inner end of the auxiliary intermediate rib and the outer end of said spring rib.