A canopy tension system for an umbrella. The umbrella comprises a frame having a pole with a rib assembly at one end, the rib assembly comprising a plurality of ribs an end cap assembly attached to a distal end of each rib, the end cap assembly including a channel with an adjustable depth for receiving the rib; and a canopy attached to the end cap assembly of each rib of the frame. The end cap assemblies are adapted to modify the tension of the canopy to prevent excessive or insufficient tension when the canopy is mounted by adjusting the depth of one or more channels before the distal end of the rib is inserted.

A canopy tension system for an umbrella. The umbrella comprises a frame having a pole with a rib assembly at one end, the rib assembly comprising a plurality of ribs an end cap assembly attached to a distal end of each rib, the end cap assembly including a channel with an adjustable depth for receiving the rib; and a canopy attached to the end cap assembly of each rib of the frame. The end cap assemblies are adapted to modify the tension of the canopy to prevent excessive or insufficient tension when the canopy is mounted by adjusting the depth of one or more channels before the distal end of the rib is inserted.

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.

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.

An umbrella assembly can be assembled using L-shaped elongate members pivotably coupled with upper and lower hubs for supporting and actuating an umbrella cover. The L-shaped elongate members can be pivotably coupled together and paired such that a lateral portion of each of the elongate members extends opposite the other lateral portion within the pair and pivotably coupled with one of the upper hub and the lower hub. The lateral portions pivotably coupled within rib-receiving slots corresponding to one of the upper hub and the lower hub and secured within the rib-receiving slots by one of an upper hub cap and a lower hub cap.

An umbrella assembly can be assembled using L-shaped elongate members pivotably coupled with upper and lower hubs for supporting and actuating an umbrella cover. The L-shaped elongate members can be pivotably coupled together and paired such that a lateral portion of each of the elongate members extends opposite the other lateral portion within the pair and pivotably coupled with one of the upper hub and the lower hub. The lateral portions pivotably coupled within rib-receiving slots corresponding to one of the upper hub and the lower hub and secured within the rib-receiving slots by one of an upper hub cap and a lower hub cap.

An arm-held umbrella includes an umbrella and an arm connector. One end of a supporting rod of the umbrella is mechanically connected with the arm connector so that the umbrella can rotate at a certain included angle relative to the length direction of the arm; the arm connector can be wrapped and fixed on the arm, and can also be used as a handle for holding umbrella by hand. Exactly, the umbrella attachable to the arm is a multipurpose umbrella, which can not only be attached to arm but also be held by hand. Especially, holding the umbrella under the state of bent arm meets various demands of people, for example, playing a mobile phone with both hands, cycling or taking photos while holding the umbrella.

An arm-held umbrella includes an umbrella and an arm connector. One end of a supporting rod of the umbrella is mechanically connected with the arm connector so that the umbrella can rotate at a certain included angle relative to the length direction of the arm; the arm connector can be wrapped and fixed on the arm, and can also be used as a handle for holding umbrella by hand. Exactly, the umbrella attachable to the arm is a multipurpose umbrella, which can not only be attached to arm but also be held by hand. Especially, holding the umbrella under the state of bent arm meets various demands of people, for example, playing a mobile phone with both hands, cycling or taking photos while holding the umbrella.

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.

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.