Abstract: An umbrella frame provides a stable and enduring support for an umbrella canopy while also allowing canopies of varying shapes and sizes to be mounted thereto. The umbrella frame includes a hub assembly, namely, a main hub member mounted about a central pole member of the umbrella frame which offers improved means for attaching brackets thereto which are structured to pivotally receive a plurality of strut members therein, which strut members are, in turn, pivotally secured to a plurality of rib members interconnected with an upper, secondary hub. The main hub member of the present invention preferably includes an upper portion, a lower portion, and a channel having at least one ledge formed therebetween, with a band formed from a flattened strip of metal secured within the channel about the hub member.

Abstract: An improved, durable and versatile umbrella frame assembly is provided to more readily endure abusive weather conditions and that may be quickly, easily and inexpensively repaired. In addition, the assembly is also easily modified to accommodate umbrella canopies of different sizes and shapes. In addition, an improved umbrella operating system is provided to permit simple opening, positioning, and locking of an umbrella while allowing the frame to freely rotate about the pole regardless of the degree to which it is opened, while the pole is held in a stationary position. The assembly includes a pair of hub members mounted about a pole member wherein the main hub member is slidable up and down the pole. A pulley system with a locking cam member may be employed to allow the umbrella to safely and easily open to any desired position. A locking stabilizer arm may be used to secure the main hub member in the fully open position.

Abstract: An improved, durable and versatile umbrella frame assembly is provided to more readily endure abusive weather conditions and that may be quickly, easily and inexpensively repaired. In addition, the assembly is also easily modified to accommodate umbrella canopies of different sizes and shapes. In addition, an improved umbrella operating system is provided to permit simple opening, positioning, and locking of an umbrella while allowing the frame to freely rotate about the pole regardless of the degree to which it is opened, while the pole is held in a stationary position. The assembly includes a pair of hub members mounted about a pole member wherein the main hub member is slidable up and down the pole. A pulley system with a locking cam member may be employed to allow the umbrella to safely and easily open to any desired position. A locking stabilizer arm may be used to secure the main hub member in the fully open position.