摘要:
A double folding auto-expansion and folding umbrella has an umbrella shaft formed by a hollow first tube sheathing with a hollow second tube, a head fixed on the bottom of the hollow second tube, a control switch being installed on the head, a first nest fixed on the top of the hollow first tube; a second nest sheathing on the umbrella shaft and capable of lifting and moving along thereof, a supporting frame composed by a plurality of umbrella bones connecting to the second nest, and an umbrella cloth paved on the supporting frame. The first nest is connected to the hollow first tube, the supporting frame and the umbrella cloth. A retaining seat of the elastic pin is positioned in the about middle of the hollow second tube. An elastic hook is installed under the elastic pin. The elastic hook is connected to the control switch. Besides, the upper portion of the hollow first tube has a first buckling hole. An elastic buckle for buckling the first buckling hole is installed in the second nest. An elastic protrusion is installed in the below of the hollow second tube. A main elastic unit for closing the umbrella shaft is installed in the hollow first tube and the hollow second tube. One end of the main elastic unit is fixed in the first nest and another end thereof is fixed on the retaining seat.
摘要:
A multiple-fold umbrella includes a telescopic central shaft having seven tubes telescopically coupled with one another, with an outermost tube having no (or zero) concave portion formed on the outermost tube, and with an innermost tube having six concave portions circumferentially formed on the innermost tube, each concave portion recessed in the tube centripetally about a longitudinal axis of the shaft and defining a central angle of sixty degrees, and the tubes gradationally increasing the number of the concave portions from the outermost tube towards the innermost tube to define an air chamber between a concave portion of an inner tube and a circular periphery of an outer tube neighboring to the inner tube for a smooth slidable coupling of every two neighboring tubes.
摘要:
An improved umbrella rod structure of multiple tubes, in which the locating assembly includes a spring, a main body, and a plunger. The locating assembly is plugged into an inner tube, with a stop flange of the main body abutting against the lower end of the inner tube. Then, the conical front end of the plunger will retractably project out of a through hole of the inner tube. Using the recessed groove of the outer tube sliding over the elongated guide groove of the inner tube, the projecting end of the plunger will first engage with the lower aperature of the outer tube and then as the inner tube is drawn upwards to have a short rib of the main body abut against the upper segment of the recessed groove, which has a smaller curvature, the plunger will engage with the upper aperature to lock the inner tube and the outer tube in position. With such an arrangement, the inner tube and the outer tube can cooperate with each other to open or close an umbrella, without relative rotation motion therebetween.
摘要:
In this invention an umbrella with a cover, preferably square or rectangular, is supported on a telescopic shaft by articulated ribs that extend from the shaft beneath the cover. The articulated ribs are connected to auxiliary ribs and both are controlled by guides and stabilizers that extend radially from a reciprocable transfer sleeve on the telescopic shaft and move the ribs and auxiliary ribs to fold the cover inside out as the transfer sleeve is lowered on the shaft, the shaft is shortened, and the umbrella is closed.
摘要:
A multiple-fold mini umbrella includes: a telescopic central shaft, and at least a top rib pivotally secured to an upper notch formed on a top end of the central shaft, a stretcher rib pivotally connected between each top rib and a middle runner, and an auxiliary stretcher rib pivotally connected to a lower runner slidably disposed about the central shaft with the middle runner slidably engageable with a sleeve member of the lower runner having an upper flange formed on a top edge of the sleeve member, and an intermediate rib slidably engageable with the auxiliary stretcher rib and pivotally connected with an outer rib which is pivotally connected to the top rib by a linking rod, whereby when closing an opened umbrella by lowering the lower runner along the central shaft to lower the auxiliary stretcher rib toward the central shaft, the upper flange of the lower runner will pull the middle runner and the pivotally connected stretcher rib and top rib downwardly to retractively centralize all the umbrella ribs toward the central shaft to greatly reduce a folding volume of the closed umbrella for a convenient carrying purpose.
摘要:
An umbrella ring which is used to position the tips which connect every corner of the canopy to the ribs of the umbrella which can not be telescoped and mainly consisting of a shank, a canopy, ribs, tips and a handle. The improved ring brings all the ribs together and has a sleeve wherein one or more slots are formed for positioning the tips which connect the canopy to the ribs so that the umbrella ring can slide along the shank to an appropriate position to place the ribs and the tips completely in the inner space of the umbrella ring effectively and easily.
摘要:
An emergency umbrella includes a hollow, tubular handle; a hub formed of an inverted cup-like section slidably contained in the handle between an open position at the upper end of the handle and a stored position at the lower end of the handle, the hub also including a piston secured to the inverted cup-like section; a sleeve slidably mounted on the hub between an upper position and a lower position, the sleeve including a central section slidably mounted on the hub and radially directed strut locking sections hingedly connected to the central section; a plurality of struts connected to the strut locking sections, each strut movable between an upright position substantially parallel to the longitudinal axis of the handle and a radial position substantially radially outward from the longitudinal axis; and a web of flexible, water-resistant material connected to the struts, such that opening and closing of the struts is accomplished by a snap action of the handle, whereupon the sleeve slides on the piston of the hub.
摘要:
A link means of multiple-fold umbrella includes a plurality of link means for extending an umbrella hood as mounted on the plural link means of which a first link is pivotally secured to a central handle and a second link having its inner end pivotally secured to the central handle and having its outermost end pivotally secured with a reinforcing link operatively concealed in the first link to hold the first link when extending the plural link means so that the second link and the reinforcing link can be easily retracted to fold the umbrella.
摘要:
A precipitation protecting device that may be configured as a wide brimmed hat, or as an umbrella like covering. The device is movable from a collapsed, low volume configuration in which it is easily transported or stored, to a deployed configuration in which it well protects a user's head and upper body. A covering of flexible material, which may be transparent, has a relatively rigid perimeter defined by a plurality of distinct rigid tubular elongated support members. The support members may be tubular, or may be bars or other solid structures. An elastic structure, such as an elastic band, operatively connects the support members so that they are movable from the low volume configuration in which the members are generally side-by-side, to the deployed configuration in which adjacent elements are connected end-to-end to define a relatively rigid perimeter for the flexible covering. When used as a hat, the flexible covering is connected to a wearer's head by a headband, straps, or the like, at a central portion of the flexible covering. In an umbrella embodiment, a handle engages a central portion of one side of the flexible covering, the handle being unconnected to the relatively rigid perimeter.
摘要:
Disclosed are several methods of parting rubber from an underlying surface. Polyvinyl alcohol, methylcellulose, starch derivatives and dextran are allsuitable parting agents for rubber. Polyvinyl pyrrolidine is a particularly effective parting agent for use in the formation of balloon-type medical catheters; it is also useful as a parting agent in the formation of synthetic membranes, blood vessels andconduits. The invention includes the method of use of these parting agents as well as the products formed by the disclosed process(es). Also disclosed is a method of forming a synthetic blood vessel of a polymer material, e.g., polyurethane.