An umbrella includes a shaft, a top cap and a runner. Multiple rib units and multiple stretchers are pivotably connected to the top cap and the runner. The rib units each have a first rib, a second rib and a third rib. The first, second and third ribs are pivotably connected in sequence. A canopy is mounted to the rib units. The second ribs each have a first connection portion on one end thereof, and the first connection portion has a seat which is connected to a link unit. The link unit has a joint which is connected to the third rib. The third rib has a positioning member to position the joint. The third rib and the joint are connected with each other to bear wind force applied to the second rib and the third rib, such that the second and third ribs do not deform.

An umbrella includes a shaft, a top cap and a runner. Multiple rib units and multiple stretchers are pivotably connected to the top cap and the runner. The rib units each have a first rib, a second rib and a third rib. The first, second and third ribs are pivotably connected in sequence. A canopy is mounted to the rib units. The second ribs each have a first connection portion on one end thereof, and the first connection portion has a seat which is connected to a link unit. The link unit has a joint which is connected to the third rib. The third rib has a positioning member to position the joint. The third rib and the joint are connected with each other to bear wind force applied to the second rib and the third rib, such that the second and third ribs do not deform.

An automatic inversely foldable umbrella includes a skeleton structure provided with a main shaft; an upper runner fixed to one end of the main shaft; a lower runner slidably disposed on the main shaft; a middle runner slidably disposed on the main shaft between the upper runner and the lower runner; plural skeleton linkages having a first rib, a second rib, and a foldable rib; plural linking members with one end pivotally disposed on the lower runner and the other end connected with the first rib; a resilient member disposed between the middle runner and the lower runner, and compressible due to the middle runner and the lower runner movement; a first canopy combined to the upper runner and a second canopy combined to the lower runner for covering the skeleton linkages; and a handle. Therefore, the folding and expanding operation of the umbrella are facilitated.

Disclosed herein are retractable umbrella frame devices comprising a base body structure at least partially surrounding a central axis structure. The central axis structure can be connected to a skeletal frame structure comprising a plurality of arms having a first end connected to the central axis structure and a second free end. The plurality of arms can be moveably connected to the central axis structure, such that the arms can be retracted into or extended from the base body structure. In some embodiments, the base body structure comprises open portions along its length. In some embodiments, the retractable umbrella frame devices further comprise one or more secondary support structures at least partially surrounding the base body structure. In some embodiments, the retractable umbrella frame devices can further comprise guide structures connected to the one or more secondary support structures and the arms of the skeletal frame structure.

A reverse folding umbrella folds away from a user of the umbrella, thus reducing the likelihood that rain or other water on the primary fabric of the umbrella will fall onto the user while the umbrella is being folded and while the umbrella is in the closed position.

A reverse folding umbrella folds away from a user of the umbrella, thus reducing the likelihood that rain or other water on the primary fabric of the umbrella will fall onto the user while the umbrella is being folded and while the umbrella is in the closed position.

An asymmetrical umbrella includes a structure formed by a single frame member that is attached at its first and second ends to a handle and also attached to the handle at a third position along the frame member between the ends of the frame member such that the frame member passes through the handle at the third position. A sleeve collects two portions of the frame member together at a position opposite a periphery of the umbrella from the handle. A canopy is attached to the frame member. The umbrella is collapsible into a generally planar shape that is easily transportable.

An asymmetrical umbrella includes a structure formed by a single frame member that is attached at its first and second ends to a handle and also attached to the handle at a third position along the frame member between the ends of the frame member such that the frame member passes through the handle at the third position. A sleeve collects two portions of the frame member together at a position opposite a periphery of the umbrella from the handle. A canopy is attached to the frame member. The umbrella is collapsible into a generally planar shape that is easily transportable.

A tool for transporting and installing an insulation blanket in a single piece on a component, for example of an aircraft. The component can have a double-curvature surface like a sealed back which makes the installation difficult given the planar nature of the blanket. The transporting and installing tool operates like an umbrella without fabric at which the ribs are provided with removable attachment devices allowing removable fixing to the insulation blanket. The tool is simple and easy to handle for rapid installation that can be carried out by a single operator.

An umbrella has a column, an upper nest, a movable lower nest, a plurality of long rods, a plurality of short rods. The upper nest has a plurality of first slots spaced apart on a periphery of the upper nest, a plurality of first pins is disposed on the upper nest respectively; each long rod has a first rod-hanging hook on the top end thereof, each first rod-hanging hook hooks on the corresponding first pin; the lower nest has a plurality of second slots spaced apart on a periphery of the lower nest, a plurality of second pins are disposed on the lower nest respectively; each short rod has a second rod-hanging hook on the bottom end thereof, each second rod-hanging hook hooks on the corresponding second pin. The structure of the present invention is simple and reasonable, the machining is convenient and the cost is low.