An umbrella includes an anti-inversion mechanism that is configured to apply to each rib assembly a force that counters an inversion force that is applied to the umbrella. The anti-inversion mechanism includes a first elongated member that is coupled at a first end to one rib of the plurality of ribs. The umbrella also includes a second elongated member having a first end coupled to the first elongated member. A first connector is coupled to a distal end of the distal rib; and a second connector is coupled to a second end of the first elongated member. The first connector and the second connector are coupled to one another to securely attach the second elongated member to the distal rib.

An umbrella includes an anti-inversion mechanism that is configured to apply to each rib assembly a force that counters an inversion force that is applied to the umbrella. The anti-inversion mechanism includes a first elongated member that is coupled at a first end to one rib of the plurality of ribs. The umbrella also includes a second elongated member having a first end coupled to the first elongated member. A first connector is coupled to a distal end of the distal rib; and a second connector is coupled to a second end of the first elongated member. The first connector and the second connector are coupled to one another to securely attach the second elongated member to the distal rib.

An anti-turning umbrella frame is revealed. The anti-turning umbrella frame includes a plurality of inner main ribs, a plurality of inner connecting ribs, a plurality of middle main ribs, and a plurality of stretchers. An outer end of the inner main rib is riveted to an inner end of the middle main rib to form a first rivet point. The anti-turning umbrella frame features on that a positioning portion is disposed on an inner side of the first rivet point of the inner main rib while a locking portion corresponding to the positioning portion is arranged at or close to the outer end of the inner connecting rib. The locking portion is locked with the positioning portion while the umbrella frame is opened. Thereby the inner main rib and the middle main rib are connected to form a rigid body for preventing the middle main rib from turning over.

An anti-turning umbrella frame is revealed. The anti-turning umbrella frame includes a plurality of inner main ribs, a plurality of inner connecting ribs, a plurality of middle main ribs, and a plurality of stretchers. An outer end of the inner main rib is riveted to an inner end of the middle main rib to form a first rivet point. The anti-turning umbrella frame features on that a positioning portion is disposed on an inner side of the first rivet point of the inner main rib while a locking portion corresponding to the positioning portion is arranged at or close to the outer end of the inner connecting rib. The locking portion is locked with the positioning portion while the umbrella frame is opened. Thereby the inner main rib and the middle main rib are connected to form a rigid body for preventing the middle main rib from turning over.

An arthritic-aiding pin-centering-and-guiding auditorily- snap-locking umbrella comprising: a canopy having tension-adjusting oval openings, a pole having a fixed hub and a movable hub, tension-adjusting rods, rod-locking screws respectively screwed through the tension-adjusting oval openings and into the tension-adjusting rod, three pulleys respectively screwed to the fixed hub and the movable hub, a pulley cord threaded on the three pulleys and attached to the movable hub, a cord hook, two gear cams attached to the movable hub, a cord blocker attached to the two gear cams, at least one pin opening drilled through the pole, an arthritic-aiding grip ring attached to the cord hook, a locking pin attached to the arthritic-aiding grip ring, a recess molded on the locking pin, at least one pin-centering-and-guiding plug and tube having built-in auditorily-snap-locking leaf springs and leaf-spring towers inserted into the pole and aligned with the at least one pin opening, and a tower-locking screw screwed between the leaf-spring towers for locking the plug inside the pole.

An arthritic-aiding pin-centering-and-guiding auditorily- snap-locking umbrella comprising: a canopy having tension-adjusting oval openings, a pole having a fixed hub and a movable hub, tension-adjusting rods, rod-locking screws respectively screwed through the tension-adjusting oval openings and into the tension-adjusting rod, three pulleys respectively screwed to the fixed hub and the movable hub, a pulley cord threaded on the three pulleys and attached to the movable hub, a cord hook, two gear cams attached to the movable hub, a cord blocker attached to the two gear cams, at least one pin opening drilled through the pole, an arthritic-aiding grip ring attached to the cord hook, a locking pin attached to the arthritic-aiding grip ring, a recess molded on the locking pin, at least one pin-centering-and-guiding plug and tube having built-in auditorily-snap-locking leaf springs and leaf-spring towers inserted into the pole and aligned with the at least one pin opening, and a tower-locking screw screwed between the leaf-spring towers for locking the plug inside the pole.

Disclosed is an improved pull rib structure of a wind-resistant umbrella. The pull rib includes a rigid pull bar section and a flexible pull wire connected to each other. The pull wire has a free end that is coupled through a tighten-up device to the outer rib. The tighten-up device includes a position-restoration member arranged therein to connect to the free end of the pull wire and apply a position-restoration driving force to the pull wire. The tighten-up device keeps the pull wire in a stretched and tight condition during collapsing of umbrella so as to prevent entangling and ensure a smooth opening operation and service life of the umbrella.

Disclosed is an improved pull rib structure of a wind-resistant umbrella. The pull rib includes a rigid pull bar section and a flexible pull wire connected to each other. The pull wire has a free end that is coupled through a tighten-up device to the outer rib. The tighten-up device includes a position-restoration member arranged therein to connect to the free end of the pull wire and apply a position-restoration driving force to the pull wire. The tighten-up device keeps the pull wire in a stretched and tight condition during collapsing of umbrella so as to prevent entangling and ensure a smooth opening operation and service life of the umbrella.

The invention generally relates to a sunshade apparatus such as an umbrella or sunshade that includes a canopy with extendable portions that may be positioned in a manner so as to maximize shade. In exemplary embodiments, the sunshade device includes a canopy, and a rib assembly connected to a shaft, the rib assembly including a first joint coupled to a first assembly arm, the first joint connecting a first arm extension to the rib assembly at a first angle with respect to a surface, and a second joint coupled to a second assembly arm, the second joint connecting a second arm extension to the rib assembly at a second angle with respect to the surface.

An umbrella includes an anti-inversion mechanism that is configured to apply to each rib assembly a force that counters an inversion force that is applied to the umbrella. The anti-inversion mechanism includes a flexible elongated structure that is disposed exteriorly along the second rib part and has a first bent end that is attached to the second rib part by passing through an opening formed in the second rib part and being anchored within a hollow interior of the second rib part. The mechanism further includes a flexible wire having a first end attached to the flexible elongated structure of the anti-inversion mechanism and a second end attached to a rib tip that is located at a free distal end of the rib assembly.