Abstract: A telescopic sunshade includes an outer tube having upper and lower positioning holes. An inner tube is slideably received in the outer tube and includes an upper end beyond the outer tube. Ribs are pivotably mounted to a hub fixed to the inner tube. Stretchers are pivotably mounted between the ribs and the outer tube. The sunshade is in a folded state when the inner tube is in an upper position. The sunshade is in an unfolded position when the inner tube is in a lower position. The protruded length of the inner tube in the upper position is larger than that in the lower position. A sleeve is slideably mounted around the outer tube and engaged with the inner tube to move therewith. A positioning button is engaged in the upper or lower positioning hole to retain the sunshade in the folded or unfolded state.

Abstract: A mechanism for opening and collapsing an umbrella includes a runner which has two lockers pivotably connected thereto and an operation collar is movably mounted to the shaft of the umbrella so as to operate the two lockers. Each of the lockers is a curved member and pivotably connected to the runner by a pivot. Two ends of the each locker are pivotable relative to the pivot in a direction perpendicular to an axis of the runner. The user simply moves the operation collar to pivot the lockers to open and collapse the umbrella.

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 umbrella device which has a shank, an umbrella-like cap formed as a membrane and a driver. The membrane is connected to the shank and is caused by the driver to move from a position of rest where it droops limply around the shank to an open position where it is essentially horizontal due to the centrifugal forces of the membrane produced by the rotation of the membrane by the driver.

Abstract: A sunshade comprises a main post, a canopy frame, and a tilting and rotating assembly mounted between the main post and the canopy frame. Rotation of a handle on the main post in a direction causes the canopy frame to move from a folded state to an unfolded state. Further rotation of the handle in the same direction causes the canopy frame to tilt, and still further rotation of the handle in the same direction causes the tilted canopy frame to turn relative to a longitudinal axis of the main post until an optimal shield is obtained.

Abstract: A safety umbrella includes: a central shaft; a rib assembly having a plurality of top ribs pivotally secured to an upper notch on the shaft each top rib pulled by a pulling rope to be tensioned towards an upper portion on the shaft, and a plurality of stretcher ribs each pivotally connected between each top rib and a runner slidably held on the shaft, with each stretcher rib forming an acute angle between the stretcher rib and the shaft; whereby upon opening of the umbrella, the tension force as effected by the pulling rope and acting upon each top rib will be transferred to each stretcher rib to form an upwardly orienting fraction force to lift the stretcher rib along the shaft to stably hold the rib assembly at an opening state; and a ball resiliently held in a lower portion of the shaft, whereby upon closing of the umbrella, the runner will be engaged with the ball for stably retracting the rib assembly at a folded condition, thereby eliminating the acute spring catches as found in a conventional umbrella

Abstract: A disposable umbrella apparatus is made of thermoplastic and inexpensive materials and has a central staff made of a length of plastic pipe. Three short plastic dowels are mounted perpendicular through the staff and a plastic cap mounts to the top of the pipe to act as a stop for a fixed upper collar supporting the fixed struts of the umbrella and as a latch for a slidable collar carrying the collapsing umbrella struts. The slidable collar has an opening therethrough and slides along the staff pipe and the latching for the umbrella uses a pair of grooves along the inside of the opening the slidable collar so that the collar can slide over one of the plastic dowels protruding from the staff and abut against a second dowel protruding from the staff and then rotated between the two dowels to latch the collars and struts in position to hold the umbrella in an open position.