Abstract: A multiple-fold umbrella shaft, consisting of a plurality of tubes telescopically engageable with one another, includes an inner tube having concave quadrants designated as Vi, and an outer tube slidably engageable with the inner tube and having concave quadrants designated as Vo, forming a relationship as defined by a formula of Vi−Vo≧1 in order for preventing twisting and vibration of the tubes and for enhancing a smooth folding or unfolding operation when closing or opening the umbrella.

Abstract: A double-story umbrella includes an upper umbrella, and a lower umbrella detachably coupled with the upper umbrella and operatively opened to be a beach umbrella or a big umbrella having large shielding area; whereby upon uncoupling of the upper and lower umbrellas, each umbrella can be folded to have a short folding length for a convenient handling and storage when the umbrella is folded.

Abstract: An economic double-story umbrella includes: an upper umbrella formed by an upper umbrella cloth; and a lower umbrella having a shaft and a rib assembly pivotally secured to the shaft for securing a lower umbrella cloth on the rib assembly; having an upper buckling member formed on the upper umbrella cloth and a lower buckling member formed on the lower umbrella cloth coupled with the upper buckling member for forming the double-story umbrella when opening the umbrella; whereby upon uncoupling of the upper and lower buckling members when closing the umbrella, the upper umbrella cloth will be compactly folded to enwrap the lower umbrella as folded for conveniently storing the umbrella.

Abstract: A double-story umbrella includes an upper umbrella, and a lower umbrella detachably coupled with the upper umbrella and operatively opened to be a beach umbrella or a big umbrella having large shielding area; whereby upon uncoupling of the upper and lower umbrellas, each umbrella can be folded to have a short folding length for a convenient handling and storage when the umbrella is folded.

Abstract: A safety umbrella runner includes: a push button having a plunger slidably held in a slot transversely formed through the runner to contact a spring catch normally resiliently protruding outwardly from the central shaft for retaining the runner when opening the umbrella, with the push button stably slidably held in the slot formed in the runner for a very ergonomic operation when depressing the push button for disengaging the runner from the catch for closing the umbrella.

Abstract: A multiple-fold automatic umbrella includes a penta-fold rope having its inner rope end secured with a locking head locked in a grip of a central shaft and defining a first rope section of the penta-fold rope from the locking head through an interior of the shaft to an upper guiding roller rotatably mounted in an upper portion of the shaft; a second rope section of the penta-fold rope from the upper guiding roller to a first lower guiding roller rotatably mounted on a lower runner slidably held in the shaft; a third rope section of the rope from the first lower guiding roller towards at least an uppermost guiding roller rotatably mounted in a top portion of the shaft; a fourth rope section from the uppermost guiding roller towards a second lower guiding roller rotatably mounted on the lower runner opposite to the first guiding roller; and a fifth rope section from the second lower guiding roller towards an outer rope end secured to an upper notch formed on the top of the shaft, thereby providing a rope dynami

Abstract: A simplified flat top umbrella for simulating a bottle cap of drink or beverage includes: a rib assembly pivotally secured to a central shaft having at least a top rib and an outer rib operatively extended to form a horizontal rib frame having an outer rib portion generally perpendicular to the horizontal rib frame; and an one-piece umbrella cloth secured to the horizontal rib frame for forming a flat top surface for printing decorative or advertising features thereon such as a logo of a drink or beverage and having a skirt portion of the umbrella cloth secured to the outer rib portion by forming a plurality of radial ruffles and ridged rumples radially formed on a periphery of the skirt portion for vividly simulating the ruffles as circumferentially formed on a perimeter of a bottle cap such as cap of drink or beverage bottle.

Abstract: A rib assembly for multiple-fold umbrella includes: an aluminum top rib pivotally secured to an upper notch formed on a top portion of a central shaft, an aluminum stretcher rib pivotally connected between the top rib and a lower runner slidably held on the central shaft, a plastic intermediate rib interconnected between the top rib and an aluminum or plastic outer rib, an aluminum connecting rib pivotally connected between the stretcher rib and the intermediate rib, and a spring rib slidably coupled to the intermediate rib by a ring member fastened on the intermediate rib; with the plastic intermediate rib interconnected among those light ribs for strengthening the rib assembly substantially made of light-weight materials.

Abstract: A safety umbrella includes: a central shaft; a rib assembly having a plurality of top ribs pivotally secured to an upper notch on the shaft each top rib pulled by a pulling rope to be tensioned towards an upper portion on the shaft, and a plurality of stretcher ribs each pivotally connected between each top rib and a runner slidably held on the shaft, with each stretcher rib forming an acute angle between the stretcher rib and the shaft; whereby upon opening of the umbrella, the tension force as effected by the pulling rope and acting upon each top rib will be transferred to each stretcher rib to form an upwardly orienting fraction force to lift the stretcher rib along the shaft to stably hold the rib assembly at an opening state; and a ball resiliently held in a lower portion of the shaft, whereby upon closing of the umbrella, the runner will be engaged with the ball for stably retracting the rib assembly at a folded condition, thereby eliminating the acute spring catches as found in a conventional umbrella

Abstract: A lightening multiple-fold automatic umbrella comprises: a central shaft consisting of a plurality of tubes telescopically engageable with one another; a rib assembly having at least a top rib and a stretcher rib pivotally secured to an upper notch on the central shaft and a lower runner slidably held on the central shaft for securing an umbrella cloth on the rib assembly; an opening spring retained within the central shaft for opening the umbrella; a drag rope retained between the central shaft and the lower runner for pulling the lower runner as upwardly moved when opening the umbrella and extending the rib assembly; and a control module embedded in a grip of the central shaft normally locking the lower runner when closing the umbrella for folding the rib assembly; and operatively unlocking the lower runner when opening the umbrella for extending the rib assembly. By these mechanisms, a multiple-fold automatic umbrella will be produced for quick assembly and convenient operation or maintenance.

Abstract: A windproof umbrella includes: a central shaft, a rib assembly having at least a top rib and a stretcher rib pivotally secured to the central shaft for securing an umbrella cloth thereon, a pulling rod secured on the stretcher rib and a pulling rope connected between the pulling rod and the top rib (or an outer rib portion of the rib assembly), with the pulling rope and pulling rod fastening the top rib (or the outer rib portion of the rib assembly) towards the central shaft for preventing inversion of the umbrella cloth and the rib assembly when opening the umbrella, whereby upon folding of the umbrella, the pulling rod and pulling rope will be tensely folded within the rib assembly without loosening for forming a compact folded umbrella.

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: A collapsible umbrella structure with hand protection is provided, which is constructed in such a manner that can help prevent the user's hand from being injured when the user is using his/her hand to manually open or collapse the umbrella. The collapsible umbrella structure includes a main shaft; a running hub slidably movable along the main shaft, the running hub being held at a bottom position when the umbrella is collapsed and at an upper position when the umbrella is opened; and an upper pressable stopper, pressably mounted on the main shaft, for holding the running hub at an upper position when the umbrella is opened. The upper pressable stopper is pressed down by the running hub when the running hub is being manually moved from the bottom position to the upper position, and subsequently capable of restoring to the unpressed position after the running hub has passed therethrough so as to stop the running hub from moving downwards, thereby holding the running hub at the upper position.

Abstract: An umbrella includes: an illuminative grip detachably coupled to an inner grip portion formed on a bottom end of a central shaft of the umbrella. The illuminative grip has at least a battery detachably mounted in a cartridge of the grip, a lamp mounted in a cover detachably securable to the cartridge, and plural packing rings provided for sealing the connecting parts of the illuminative grip for water proof purpose. Upon detachment of the grip from the shaft of the umbrella, the grip having a lamp fixed thereon will serve as a portable independent flashlight for convenient illumination uses.

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.