Abstract: An umbrella rib assembly including a plurality of main ribs hinged at a main rib fixing member fixed at a top of an umbrella shaft, a plurality of a first auxiliary ribs hinged at a first auxiliary rib fixing member fixed at the umbrella shaft at a position lower than the main rib fixing member and connected with the main ribs, a plurality of second auxiliary ribs hinged at a second auxiliary rib fixing member coupled to the umbrella shaft and slidably movable between the main rib fixing member and the second auxiliary rib fixing member. The umbrella rib assembly is unfolded when the second auxiliary rib fixing member descends toward the fixed first auxiliary rib fixing member while the umbrella rib assembly is folded when the second auxiliary rib fixing member ascends toward the fixed main rib fixing member.

Abstract: An automatic folding/unfolding umbrella includes a main rod, umbrella ribs for supporting a canopy, a slide element, and a handle. The umbrella ribs are pivotally installed at the tip of the main rod, and primary link rods are pivotally installed under the tip of the main rod. A secondary link rod is pivotally coupled between each corresponding umbrella rib and each primary link rod. The slide element is installed on the main rod. A handle installed at a bottom end of the main rod includes a link mechanism. The main rod includes a link element and a link mechanism coupled to the slide element. Elastically stretchable elements couple the slide element with the primary link rod. The link mechanism is driven by the link element to slide the slide element. The elastically stretchable elements are pulled to drive the primary link rods to unfold or fold the umbrella ribs.

Abstract: The umbrella is constructed with a frame that allows one rib to be manually lifted in order to open the umbrella and allows a manually applied force to be placed on the cover between two adjacent ribs in order to close the umbrella. Mechanical cranks and the like are eliminated. In one embodiment, the upper yoke is movable relative to a fixed lower yoke and the tension in the cover maintains the upper movable yoke in the open condition of the umbrella.

Abstract: The umbrella is constructed with a frame that allows one rib to be manually lifted in order to open the umbrella and allows a manually applied force to be placed on the cover between two adjacent ribs in order to close the umbrella. Mechanical cranks and the like are eliminated. In one embodiment, rods are added to the struts to weight and maintain the lower movable yoke in the open condition of the umbrella. In another embodiment, the tension in the cover maintains the upper movable yoke in the open condition of the umbrella.

Abstract: An umbrella a fixed ring secured on top of a rod, a middle ring and a lower ring slidably engaged on the rod, a number of main staves having inner ends rotatably securing to the middle ring, a number of upper staves pivotally coupled between the fixed ring and the main staves, and a number of stave supports each having an inner end rotatably coupled to the lower ring and an outer end secured to the middle portion of the main staves. The main staves and the stave supports are made of composite materials for increasing the strength and for reducing the weight of the umbrella.

Abstract: A multiple-fold automatic umbrella includes: a central shaft; a rib assembly pivotally secured to an upper notch and a lower runner on the central shaft; an opening spring and a plurality of closing springs for opening or closing the umbrella; and a control device including a push button, an opening controller having an upper latch for controlling the opening of the umbrella, a closing controller including a lower latch for controlling the closing of the umbrella, and a multiple-fold rope respectively sinuously wound on a plurality of rollers which are respectively mounted on an upper holder formed on an upper portion of the central shaft adjacent to the upper notch and on a lower holder formed on the lower runner for smoothly winding the rope on the rollers for enhancing a smooth opening or closing operation of the umbrella.

Abstract: A folding flat umbrella including a pair of plates each having an inner edge, an outer edge, and a span therebetween. The pair of plates are aligned along their respective inner edges to form a foldable central crease whereby the pair of plates can be extended to an extended position and can be collapsed to a collapsed position. The pair of plates are fabricated of a waterproof material. A pair of brackets extend between the pair of plates in a spaced relationship. The pair of brackets facilitate the extending and collapsing of the pair of plates with respect to one another. A handle portion is coupled with respect to the pair of plates.