Abstract: A multiple-fold automatic umbrella includes: a central shaft consisting of plural tubes telescopically engageable with one another; a rib assembly including at least a top rib pivotally secured to an upper notch of the central shaft, a stretcher rib pivotally secured between the top rib and a lower runner slidably held on the central shaft, and other ribs pivotally connected with one another and pivotally secured to the top rib and the stretcher rib; an opening spring resiliently retained in the central shaft for opening the umbrella; a plurality of closing springs for closing the umbrella; and a control device including a drawer shaped push button slidably held in a grip of the central shaft having an upper latch integrally formed on the push button operatively disengaging the lower runner for opening the umbrella, and a lower latch for closing the umbrella when opened and perpendicularly secured under the lower latch with a safety spring member resiliently held in a front chamber formed in a front portion o

Abstract: A rib assembly for umbrella includes: at least a top rib pivotally secured to an upper notch fixed on a top portion of a central shaft, a stretcher rib pivotally connected with the top rib and pivotally secured to a runner slidably held on the shaft an intermediate connecting rib pivotally connected to the top rib through an intermediate connecting rib, and a tail rib pivotally connected to the intermediate rib; with the top rib formed as a slim elongate rod having an outermost end of the top rib formed as a flat thinning end portion pivotally connected with a pair of narrowing lugs centripetally pressed from two side walls of the U-shaped groove of the stretcher rib; and having an outer portion of the top rib formed as a flat thinning portion for pivotally connecting an inner end of the intermediate connecting rib, thereby forming a slim rib assembly for minimizing a folding volume of the rib assembly when closing the umbrella adapted for making a slim mini pocketable folding umbrella.

Abstract: An automatic umbrella includes a central shaft consisting of five tubes telescopically engageable with one another; a rib assembly consisting of at least a top rib pivotally secured to a top portion of the central shaft, a stretcher rib pivotally connected with the top rib and a lower runner slidably held on the central shaft, and plural ribs pivotally connected to the top rib and the stretcher rib; an opening spring resiliently retained in the central shaft for opening the umbrella; a plurality of closing springs secured on the rib assembly for closing the umbrella; and a control device consisting of an upper roller rotatably mounted on an upper portion of the central shaft, at least a lower roller rotatably secured on the lower runner and at least an uppermost roller rotatably secured on a top portion of the shaft for continuously deflectively winding at least a rope of the control device on the respective rollers for making an automatic umbrella of penta-fold or the like.

Abstract: A multiple-fold windproof umbrella includes: a central shaft having a rib assembly pivotally secured to the central shaft, a lower cloth secured to the rib assembly, an upper cloth secured to the central shaft and juxtapositionally retained above the lower cloth, and a plurality of control valves each formed between the upper cloth and the lower cloth secured on the rib assembly and openable for escaping a strong wind blowing into the umbrella cloths; and for automatically restoring the upper cloth downwardly for closing the opening between the upper and lower cloths of the umbrella after the escape of wind.

Abstract: An automatic umbrella includes: a top rib and a stretcher rib each having a cross section of U shape or the like shape and made of light material including aluminum alloy, an outer rib gradually tapered outwardly and an auxiliary stretcher rib each having a cross section of circular shape or the like shape and made of composite or plastic materials having good resilience and mechanical strength to be respectively connected with the top rib and the stretcher rib, a flattened tensioning spring jacketed on the shaft and retained between a middle runner arid a lower runner having a cross section of the spring ring formed as rectangular shape for forming a slim umbrella shaft, and a top cap member firmly fixed on a top of the shaft, thereby providing an automatic umbrella having light weight, better resilience and strength, slim structure, and firmly fastened top cap.

Abstract: A simplified flat top umbrella includes: a central shaft (1) having an upper notch (11) formed on an upper portion of the shaft (1) and a lower runner (12) slidably held on the shaft (1), a top rib (2) pivotally secured to the upper notch (11), an outer rib (3) fixed to the top rib (2), a stretcher rib (4) pivotally connected between the lower runner (12) and the top rib (2), and a pulling rib (5) secured between the stretcher rib (4) and an outer portion (32) of the outer rib (3); whereby upon extending of the ribs having an umbrella cloth retained thereon for opening the umbrella, the top rib (2) and the outer rib (3) will be lifted to form a generally horizontal canopy and the outer portion (32) of the outer rib (3) will be pulled inwardly by the pulling rib (5) and the stretcher rib (4) to form a skirt portion generally perpendicular to the horizontal canopy, thereby providing a light compact flat top umbrella for a convenient carrying and operation.

Abstract: A multiple-fold windproof umbrella includes: a central shaft having a rib assembly pivotally secured to the central shaft, a lower cloth having an anti-sagging band fastened on an upper periphery of the lower cloth and secured to the rib assembly, an upper cloth secured to the central shaft and juxtapositionally retained above the lower cloth, and a plurality of control valves each formed between the upper cloth and the lower cloth secured on the rib assembly, with the valves opened for escaping a strong wind blowing into the umbrella cloths; and automatically restoring the upper cloth downwardly for closing the opening between the upper and lower cloths of the umbrella after the escape of wind; with the anti-sagging band provided on the lower cloth automatically tensioning the upper periphery of the lower cloth for preventing the sagging of the lower cloth and for enhancing a smooth folding and unfolding of the umbrella.

Abstract: A multiple-fold umbrella includes: a central shaft consisting of a plurality of tubes telescopically engageable with one another having a top or innermost tube having a smallest diameter or width and having a cross section formed with a plurality of quadrants each concave radially inwardly towards a longitudinal axis of the central shaft with at least two neighboring concave quadrants converging to form a ridge portion and a socket defined between the two neighboring concave quadrants for storing a spring catch in the socket, with the tubes gradationally curving their quadrants radially outwardly from their concave quadrants to form a lowest or outermost tube having a cross section of circular shape for a smooth holding by the umbrella user; and a rib assembly consisting of at least a top rib, a stretcher rib, an intermediate rib, an outer connecting rib and an inner connecting rib pivotally connected with one another and connected to an upper notch and a runner on the central shaft, with the inner connecting

Abstract: A windproof umbrella includes: an upper cloth secured on an upper rib pivotally connected to a central shaft of the umbrella, a lower cloth secured on a lower rib pivotally connected to the central shaft and having a central opening circumferentially formed in a top portion of the lower cloth around the central shaft, each upper cloth provided with a control valve thereon for resiliently normally closing an aperture between the upper cloth and the lower cloth; and upon blowing of strong wind on the lower and upper cloths, the control valve will be opened to release the wind for preventing inversion of the umbrella.

Abstract: A windproof umbrella includes: an upper cloth secured on an upper rib pivotally connected to a central shaft of the umbrella, a lower cloth secured on a lower rib pivotally connected to the central shaft and having a central opening circumferentially formed in a top portion of the lower cloth around the central shaft, each upper cloth provided with a control valve thereon for resiliently normally closing an aperture between the upper cloth and the lower cloth; and upon blowing of strong wind on the lower and upper cloths, the control valve will be opened to release the wind for preventing inversion of the umbrella.

Abstract: An umbrella rib assembly includes: a top rib having a cross section of U shape and made of light material including aluminum alloy, an outer rib having a cross section of circular shape and made of composite or plastic materials having good resilience and mechanical strength to be connected at an outer end of the top rib, and a stretcher rib pivotally connected with the top rib, thereby providing an umbrella having light weight but having suitable resilience and strength.

Abstract: An automatic umbrella includes: a central shaft (1) having a lower tube (11), a middle tube (13) and an upper tube (14) telescopically engageable with one another, an umbrella rib assembly (2) pivotally secured to the central shaft (1) and having an umbrella cloth (C) secured on the rib assembly (2), an opening spring (3) retained in the central shaft (1) for automatically opening the umbrella, a drag means (4) provided in the central shaft (1) through a lower runner (24) of the rib assembly (2) for pulling the lower runner (24) upwardly for extending the rib assembly (2) when opening the umbrella, and a control means (5) for controlling the automatic opening of the umbrella, wherein the tubes of the central shaft (1) are each made of light weight materials for lightening the weight of the umbrella and each tube having a cross section of concave hexagonal sides for reinforcing the strength of the tubes of the central shaft for a reliable umbrella opening operation.

Abstract: An automatic umbrella includes: a central shaft having a lower tube and an upper tube telescopically engageable with each other, a rib assembly pivotally connected to the central shaft having a lower runner slidably held on the central shaft, an opening spring retained in the central shaft, a control device installed within the grip of the central shaft without protruding any acute portion of the control device for safety purpose, and a drag device including a rod and a rope connected to each other to be retained between a lower portion of the lower tube and the lower runner slidably held on the central shaft, whereby upon actuation of the control device, the upper tube will be extended above the lower tube by the opening spring and the rib assembly may also be upwardly outwardly extended as dragged by the rope and the rod of the drag device for opening the umbrella, with the upper tube slidably telescopically engageable with the lower tube without forming any joint at the coupling location where the upper an

Abstract: A telescopic umbrella shaft includes at least an inner tube, and an outer tube telescopically slidably engageable with the inner tube, with each tube having a cross section of hexagonal shape consisting of six arcuate rectangular sides each arcuate rectangular side concaved inwardly towards a longitudinal axis of the shaft, and every two neighboring arcuate rectangular sides converging to form a reinforcing rib convex outwardly from the longitudinal axis, with each reinforcing rib formed as an inversed-U shape and having a longitudinal strip defining a horizontal plane perpendicular to a normal line between the longitudinal axis and an apex intersected by the two neighboring arcuate rectangular sides of the tube, thereby forming a balanced moment of inertia of the concave and convex portions of the tube when dynamically rotating the central shaft for greatly enhancing the stability and strength of the umbrella shaft.

Abstract: A pocketable folding umbrella includes: a slim upper notch secured on an upper portion of a central shaft; a slim lower runner slidably held on the central shaft; a plurality of extremity rib sets respectively radially pivotally secured to two extremity portions of the upper notch and the lower runner, a plurality of flat-side rib sets respectively universally pivotally secured to an upper gradational platform protruding downwardly from the upper notch and a lower gradational platform protruding upwardly from the lower runner, and an umbrella cloth secured with the rib sets, whereby upon folding of the umbrella from an opened state, the flat-side rib sets will be inwardly folded from an outer biased position towards a flat side portion of the upper gradational platform of the upper notch and towards a flat side portion of the lower gradational platform of the lower runner as accompanied with a radially folding of the extremity rib sets on the two extremity portions of the upper notch and the lower runner for

Abstract: A safety umbrella includes: a lower runner for pivotally connecting the ribs of the umbrella slidably held on a central shaft of the umbrella and formed with a latch hole in the lower runner; a controller formed in a grip of the central shaft having a push button normally protruding outwardly from the grip, and a latch connectable with the push button and resiliently urged by a restoring spring retained in the grip for operatively engaging the latch hole in the lower runner for locking the lower runner and the ribs at a folded condition, to thereby eliminate a long slot cut in the shaft above the grip to prevent deformation or damage of the shaft and to eliminate the acute spring catch formed in the shaft to prevent injury to the umbrella user as stuck by the conventional spring catch.

Abstract: A multiple-fold automatic umbrella includes: a control device having a push button slidably held in the grip for controlling the opening and closing of the umbrella, a slotted arm member secured to the push button having a pair of sockets formed in the slotted arm member, a shortened upper latch having a pair of lugs engageable with the pair of sockets for unlocking a folded telescopic shaft of the umbrella when depressing the push button for opening the umbrella, and a convex spring plate secured to a plug fixed into an inner tube of the shaft having a pair of flaps disposed on two opposite side portions of the convex spring plate for slidably holding a locking head of an umbrella-closing controller to be locked in the inner tube for a reliable folding operation of the umbrella.

Abstract: A pocketable folding umbrella Includes: a slim upper notch secured on an upper portion of a central shaft; a slim lower runner slidably held on the central shaft; two extremity rib sets respectively pivotally secured to two extremity portions of the upper notch and the lower runner; four flat-side rib sets respectively pivotally secured to two flat-side portions of the upper notch and the lower runner; an umbrella cloth secured on the rib sets; a plurality of folding springs each secured on the rib set for resiliently retracting the rib sets for minimizing a folding volume of the rib sets: and a narrowing member formed or secured to the upper notch and having a pair of U-shaped recesses disposed on two opposite end portions of the narrowing member for guiding the rib sets as being folded from an opening umbrella and storing the folded rib sets within the two U-shaped recesses for greatly minimizing the folding volume for forming a miniature slim pocketable foldable umbrella,

Abstract: An automatic umbrella includes: a telescopic central shaft having a lower tube, an intermediate tube, an upper tube and a top tube telescopically engageable with one another; a rib assembly having at least a top rib pivotally secured to a middle runner slidably held on the central shaft, a top linking rib pivotally secured between the top rib and an upper notch fixed on the top tube, and a stretcher rib pivotally secured between the top rib and a lower runner slidably held on the central shaft, the top rib longitudinally formed with an elongate slot in the top rib and the upper, tube having a limiting pin fixed on the upper tube, at least an inner tension spring resiliently retained in the central shaft and urging the limiting pin upwardly, and an outer tension spring resiliently retained between the upper notch and a ring extension formed on the upper tube, whereby upon opening of the umbrella, the limiting pin one the upper tube is linearly guided in the elongate slot in the top tube for preventing twisting

Abstract: A pocketable folding umbrella includes a slim upper notch generally rectangular shaped and secured on an upper portion of a central shaft; a slim lower runner generally rectangular shaped and slidably held on the central shaft; a plurality of extremity rib sets radially pivotally secured to two extremity portions of the upper notch and the lower runner, a plurality of flat-side rib sets universally pivotally secured to two flat-side portions of the upper notch and the lower runner, and an umbrella cloth secured with the rib sets, whereby upon folding of an opened umbrella, the flat-side rib sets will be inwardly folded towards a flat side portion of the upper notch and the lower runner as accompanied with a radially folding of the extremity rib sets on the two extremity portions of the upper notch and the lower runner for greatly minimizing the volume of the folded umbrella for a convenient carrying and storage.