Abstract: A Windproof umbrella comprising strut, stay, tension member, joint and spoke forming a five member-rib structure, the improvement resides in each strut being formed of a round resilient material; the inner and outer ends of each tension member being bent downwardly to form loops; each joint member having a common axis for pivotally connecting both the outer end of the tension member and the inner end of the spoke and providing with a continued curved portion extending inwardly from the common axis; so that when the umbrella frame is turned inside out the tension members are curved downwardly by virtue of the exended portion of the joint member under tension for urging the joint members upwardly when the slider is pulled downwardly on the shaft, thereby restoring the umbrella to its originally closed condition.

Abstract: The tension members in a collapsible umbrella are each provided at the opposite ends with upwardly bent loops that are pivotally connected to a stay and an inner end of a joint member so that when the umbrella is turned inside out by a gust of wind, the tension members are caused to bend downwardly and be stably received within the struts to avoid displacement of the joint members. The downward bending of the tension members place same under considerable tension for urging the joint members upwardly when the umbrella slider is pulled downwardly, thereby restoring the umbrella to its original condition. The joint members are further provided with curved upper portions for permitting the umbrella ribs to cluster more closely around the umbrella shaft for storage.