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    • 93. 发明申请
    • Umbrella
    • US20210259375A1
    • 2021-08-26
    • US17213094
    • 2021-03-25
    • Richard HolbrookDarren Mark
    • Richard HolbrookDarren Mark
    • A45B25/10A45B11/00A45B23/00
    • A novel umbrella is disclosed with a simplified structure that creates a clean, elegant profile with reduced component count and increased wind resistance. The umbrella includes a support post, a housing supported thereby, spokes pivotally disposed about the housing, a canopy, and an actuator. The housing has a top hub and a bottom hub. The actuator slides the hubs together to pivot the spokes away from the housing, whereby the umbrella moves from a closed position to an open position. Rollers are preferably retained within the top hub, and each spoke preferably has a spoke cam attached to one end. The spokes pivot away from the housing by having a roller surface of each spoke cam slide along each respective roller. The actuator may have a crank operated worm drive mechanism to raise and lower the canopy. In particular, the umbrella may include a threaded rod coupled to a crank for screwing into a receptacle in the housing for moving the hubs closer together, causing the spokes to pivot away from the housing, whereby the umbrella moves from a closed position to an open position.